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Dragonfly

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A dragonfly is an insect belonging to the order Odonata, infraorder Anisoptera (from Greek ἄνισος anisos, "uneven" and πτερόν pteron, "wing", because the hindwing is broader than the forewing). [1]

199 relations: Aeshna subarctica, Aeshna viridis, Aeshnidae, Aeshnoidea, Afrotropical realm, Alaska, Alfred, Lord Tennyson, American kestrel, Amulet, Amur falcon, Anax (dragonfly), Ancient Egypt, Ancient Greek, Angle of attack, Animal coloration, Antenna (biology), Antipodophlebia asthenes, Arctic Circle, Art Nouveau, Arthropod eye, August Johann Rösel von Rosenhof, Australasia, Australian emperor, Austropetaliidae, Austrophlebia costalis, Banded demoiselle, Basiaeschna, Biodiversity, Biological life cycle, Birdlime, Blue dasher, Blue-eyed darner, Brachythemis, British Dragonfly Society, Brown hawker, Butterfly, Cambridge University Press, Camouflage, Carboniferous, Chironomidae, Chitin, Chlorogomphidae, Clade, Cladogram, Common whitetail, Compound eye, Cordulegastridae, Cordulegastroidea, Corduliidae, Cornell University Press, ..., Crocothemis, Cyborg, Damselfly, Devil, Douglas (motorcycles), Douglas Dragonfly, Ecdysis, Ectotherm, Edmond de Sélys Longchamps, Emperor Jimmu, Endoplasmic reticulum, Epiophlebia, Exuviae, Faience, Fish, Flinders Petrie, Four-spotted chaser, Gene, Genetically modified organism, Gill, Gomphidae, Green darner, H. E. Bates, Haiku, Handstand, Harvard University Press, Hemianax ephippiger, Hemimetabolism, Hemolymph, Hine's emerald dragonfly, Hobby (bird), Hopi, Hori Bakusui, Hydrachnidia, Iceland, Incertae sedis, Indomalayan realm, Indonesia, Insect, Insect migration, Insect wing, Instar, International Union for Conservation of Nature, Iridescence, Kabushiki gaisha, Kamchatka Peninsula, Labrum (arthropod mouthpart), Lafcadio Hearn, Larva, Libellulidae, Libelluloidea, Lift (force), Looming, Macromiidae, Mail (armour), Matsuo Bashō, Meganeuropsis, Meganisoptera, Merlin (bird), Mesothorax, Metamorphosis, Metathorax, Middle Kingdom of Egypt, Midge, Mojave Desert, Monophyly, Moses Harris, Mosquito, Moth, Motion camouflage, Names of Japan, Navajo, Nearctic realm, Neopetalia punctata, Neotropical realm, Neuron, Nighthawk, Northern emerald, Norwegian language, Nymph (biology), Obelisk posture, Oceania, Odonata, Odonatoptera, Old World flycatcher, Ommatidium, Order (biology), Ovipositor, Oxford University Press, Palearctic realm, Pamir Mountains, Pantala flavescens, Parasitism, Pennsylvanian (geology), Permian, Permian–Triassic extinction event, Petalura gigantea, Petaluridae, PH, Phase (waves), Phragmites, Portmanteau, Portugal, Predation, Princeton University Press, Prothorax, Puebloans, Pupa, Rectum, San Antonio Express-News, Sapphire, Scarce chaser, Sex ratio, Sexual conflict, Sexual selection, Simple eye in invertebrates, Sister group, Snake, Solar panel, Southern hawker, Southern United States, Stratiotes aloides, Structural coloration, Substrate (biology), Swallow, Sweden, Swift, Sympetrum, Sympetrum danae, Synthemistidae, Tadpole, Temperate climate, Territory (animal), Tokyo, Trematoda, Trematode life cycle stages, Tribe (Native American), Trithemis, Trophic state index, Tropics, University of California Press, University of Florida, Vertebrate, Vipera berus, Welsh language, Wetland, Wing, Yellow-winged darter, Zuni. Expand index (149 more) »

Aeshna subarctica

Aeshna subarctica, the subarctic darner, is a species of darner in the family Aeshnidae.

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Aeshna viridis

Aeshna viridis, the green hawker, is a species of dragonfly in the family Aeshnidae.

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Aeshnidae

The insect family Aeshnidae, sometimes called aeshnids, comprises the hawkers (or darners in North America).

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Aeshnoidea

Aeshnoidea is a superfamily of dragonflies that contains five families, one of which is extinct.

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Afrotropical realm

The Afrotropical realm is one of the Earth's eight biogeographic realms.

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Alaska

Alaska (Alax̂sxax̂) is a U.S. state located in the northwest extremity of North America.

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Alfred, Lord Tennyson

Alfred Tennyson, 1st Baron Tennyson (6 August 1809 – 6 October 1892) was Poet Laureate of Great Britain and Ireland during much of Queen Victoria's reign and remains one of the most popular British poets.

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American kestrel

The American kestrel (Falco sparverius) is the smallest and most common falcon in North America.

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Amulet

An amulet is an object that is typically worn on one's person, that some people believe has the magical or miraculous power to protect its holder, either to protect them in general or to protect them from some specific thing; it is often also used as an ornament though that may not be the intended purpose of it.

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Amur falcon

The Amur falcon (Falco amurensis) is a small raptor of the falcon family.

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Anax (dragonfly)

Anax (from Ancient Greek ἄναξ anax, "lord, master, king") is a genus of dragonflies in the family Aeshnidae.

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Ancient Egypt

Ancient Egypt was a civilization of ancient Northeastern Africa, concentrated along the lower reaches of the Nile River - geographically Lower Egypt and Upper Egypt, in the place that is now occupied by the countries of Egypt and Sudan.

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Ancient Greek

The Ancient Greek language includes the forms of Greek used in ancient Greece and the ancient world from around the 9th century BC to the 6th century AD.

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Angle of attack

In fluid dynamics, angle of attack (AOA, or \alpha (Greek letter alpha)) is the angle between a reference line on a body (often the chord line of an airfoil) and the vector representing the relative motion between the body and the fluid through which it is moving.

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Animal coloration

Animal coloration is the general appearance of an animal resulting from the reflection or emission of light from its surfaces.

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Antenna (biology)

Antennae (singular: antenna), sometimes referred to as "feelers," are paired appendages used for sensing in arthropods.

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Antipodophlebia asthenes

Antipodophlebia asthenes is a species of dragonfly of the family Telephlebiidae, commonly known as the terrestrial evening darner.

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Arctic Circle

The Arctic Circle is the most northerly of the five major circles of latitude as shown on maps of Earth.

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Art Nouveau

Art Nouveau is an international style of art, architecture and applied art, especially the decorative arts, that was most popular between 1890 and 1910.

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Arthropod eye

Apposition eyes are the most common form of eye, and are presumably the ancestral form of compound eye.

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August Johann Rösel von Rosenhof

August Johann Rösel von Rosenhof (March 30, 1705 in Augustenburg near Arnstadt – March 27, 1759 in Nuremberg) was a German miniature painter, naturalist and entomologist.

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Australasia

Australasia, a region of Oceania, comprises Australia, New Zealand, neighbouring islands in the Pacific Ocean and, sometimes, the island of New Guinea (which is usually considered to be part of Melanesia).

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Australian emperor

The Australian emperor dragonfly, also known as the yellow emperor dragonfly, scientific name Anax papuensis, is a species of dragonfly in the Aeshnidae family.

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Austropetaliidae

Austropetaliidae is a small family of dragonflies occurring in Chile, Argentina and Australia.

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Austrophlebia costalis

Austrophlebia costalis, the southern giant darner, is a species of dragonfly in the family Telephlebiidae endemic to eastern Australia.

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Banded demoiselle

The banded demoiselle (Calopteryx splendens) is a species of damselfly belonging to the family Calopterygidae.

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Basiaeschna

Basiaeschna janata, the springtime darner, is a species of dragonfly in the monotypic genus Basiaeshna in the family Aeshnidae.

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Biodiversity

Biodiversity, a portmanteau of biological (life) and diversity, generally refers to the variety and variability of life on Earth.

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Biological life cycle

In biology, a biological life cycle (or just life cycle when the biological context is clear) is a series of changes in form that an organism undergoes, returning to the starting state.

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Birdlime

Birdlime or bird lime is an adhesive substance used in trapping birds.

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Blue dasher

The blue dasher (Pachydiplax longipennis) is a dragonfly of the skimmer family.

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Blue-eyed darner

The blue-eyed darner (Aeshna multicolor, syn. Rhionaeschna multicolor) is a dragonfly of the family Aeshnidae.

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Brachythemis

Brachythemis is a genus of dragonflies in the family Libellulidae.

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British Dragonfly Society

The British Dragonfly Society is a conservation organisation in the United Kingdom.

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Brown hawker

The brown hawker (Aeshna grandis) is a large dragonfly about long.

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Butterfly

Butterflies are insects in the macrolepidopteran clade Rhopalocera from the order Lepidoptera, which also includes moths.

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Cambridge University Press

Cambridge University Press (CUP) is the publishing business of the University of Cambridge.

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Camouflage

Camouflage is the use of any combination of materials, coloration, or illumination for concealment, either by making animals or objects hard to see (crypsis), or by disguising them as something else (mimesis).

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Carboniferous

The Carboniferous is a geologic period and system that spans 60 million years from the end of the Devonian Period million years ago (Mya), to the beginning of the Permian Period, Mya.

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Chironomidae

The Chironomidae (informally known as chironomids, nonbiting midges, or lake flies) comprise a families of nematoceran flies with a global distribution.

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Chitin

Chitin (C8H13O5N)n, a long-chain polymer of ''N''-acetylglucosamine, is a derivative of glucose.

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Chlorogomphidae

The Chlorogomphidae are a family of Odonata (dragonflies) from the suborder Anisoptera.

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Christmas

Christmas is an annual festival commemorating the birth of Jesus Christ,Martindale, Cyril Charles.

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Christmas and holiday season

The Christmas season, also called the festive season, or the holiday season (mainly in the U.S. and Canada; often simply called the holidays),, is an annually recurring period recognized in many Western and Western-influenced countries that is generally considered to run from late November to early January.

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Christmas Eve

Christmas Eve is the evening or entire day before Christmas Day, the festival commemorating the birth of Jesus.

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Christmas traditions

Christmas traditions vary from country to country.

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Clade

A clade (from κλάδος, klados, "branch"), also known as monophyletic group, is a group of organisms that consists of a common ancestor and all its lineal descendants, and represents a single "branch" on the "tree of life".

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Cladogram

A cladogram (from Greek clados "branch" and gramma "character") is a diagram used in cladistics to show relations among organisms.

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Common whitetail

The common whitetail or long-tailed skimmer (Plathemis lydia) is a common dragonfly across much of North America, with a striking and unusual appearance.

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Compound eye

A compound eye is a visual organ found in arthropods such as insects and crustaceans.

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Cordulegastridae

The Cordulegastridae are a family of Odonata (dragonflies) from the suborder Anisoptera.

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Cordulegastroidea

Cordulegastroidea is a superfamily of dragonflies that contains three families.

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Corduliidae

The insect family Corduliidae contains the emerald dragonflies or green-eyed skimmers.

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Cornell University Press

The Cornell University Press is a division of Cornell University housed in Sage House, the former residence of Henry William Sage.

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Crocothemis

Crocothemis is a genus of dragonflies in the Libellulidae family, subfamily Sympetrinae (darters).

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Cyborg

A cyborg (short for "'''cyb'''ernetic '''org'''anism") is a being with both organic and biomechatronic body parts.

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Damselfly

Damselflies are insects of the suborder Zygoptera in the order Odonata.

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Devil

A devil (from Greek: διάβολος diábolos "slanderer, accuser") is the personification and archetype of evil in various cultures.

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Douglas (motorcycles)

Douglas was a British motorcycle manufacturer from 1907–1957 based in Kingswood, Bristol, owned by the Douglas family, and especially known for its horizontally opposed twin cylinder engined bikes and as manufacturers of speedway machines.

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Douglas Dragonfly

The Douglas Dragonfly is a motorcycle designed and built by Douglas motorcycles in Bristol.

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Ecdysis

Ecdysis is the moulting of the cuticle in many invertebrates of the clade Ecdysozoa.

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Ectotherm

An ectotherm (from the Greek ἐκτός (ektós) "outside" and θερμός (thermós) "hot"), is an organism in which internal physiological sources of heat are of relatively small or quite negligible importance in controlling body temperature.

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Edmond de Sélys Longchamps

Baron Michel Edmond de Sélys Longchamps (25 May 1813 – 11 December 1900) was a Belgian liberal politician and scientist.

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Emperor Jimmu

was the first Emperor of Japan, according to legend.

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Endoplasmic reticulum

The endoplasmic reticulum (ER) is a type of organelle found in eukaryotic cells that forms an interconnected network of flattened, membrane-enclosed sacs or tube-like structures known as cisternae.

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Epiophlebia

The genus Epiophlebia is the sole member of the family Epiophlebiidae, which is itself the sole living representative of the Epiproctan infraorder Epiophlebioptera, and it contains only four species.

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Exuviae

In biology, exuviae are the remains of an exoskeleton and related structures that are left after ecdysozoans (including insects, crustaceans and arachnids) have moulted.

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Faience

Faience or faïence is the conventional name in English for fine tin-glazed pottery on a delicate pale buff earthenware body.

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Fish

Fish are gill-bearing aquatic craniate animals that lack limbs with digits.

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Flinders Petrie

Sir William Matthew Flinders Petrie, FRS, FBA (3 June 1853 – 28 July 1942), commonly known as Flinders Petrie, was an English Egyptologist and a pioneer of systematic methodology in archaeology and preservation of artifacts.

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Four-spotted chaser

The four-spotted chaser (Libellula quadrimaculata), known in North America as the four-spotted skimmer, is a dragonfly of the family Libellulidae found widely throughout Europe, Asia, and North America.

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Gene

In biology, a gene is a sequence of DNA or RNA that codes for a molecule that has a function.

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Genetically modified organism

A genetically modified organism (GMO) is any organism whose genetic material has been altered using genetic engineering techniques (i.e., a genetically engineered organism).

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Gill

A gill is a respiratory organ found in many aquatic organisms that extracts dissolved oxygen from water and excretes carbon dioxide.

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Gomphidae

The Gomphidae are a family in the Odonata commonly referred to as clubtail dragonflies; the family contains about 90 genera and 900 species; individual species may be found across North and South America, Europe, Asia, and Australia.

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Green darner

The green darner or common green darner (Anax junius), after its resemblance to a darning-needle, is a species of dragonfly in the family Aeshnidae.

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H. E. Bates

Herbert Ernest Bates, CBE (16 May 1905 – 29 January 1974), better known as H.E. Bates, was an English writer and author.

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Haiku

(plural haiku) is a very short Japan poem with seventeen syllables and three verses.

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Handstand

A handstand is the act of supporting the body in a stable, inverted vertical position by balancing on the hands.

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Harvard University Press

Harvard University Press (HUP) is a publishing house established on January 13, 1913, as a division of Harvard University, and focused on academic publishing.

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Hemianax ephippiger

The vagrant emperor (Hemianax ephippiger) is a species of dragonfly in the family Aeshnidae.

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Hemimetabolism

Hemimetabolism or hemimetaboly, also called incomplete metamorphosis and paurometabolism,McGavin, George C. Essential Entomology: An Order-by-Order Introduction.

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Hemolymph

Hemolymph, or haemolymph, is a fluid, analogous to the blood in vertebrates, that circulates in the interior of the arthropod body remaining in direct contact with the animal's tissues.

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Hine's emerald dragonfly

The Hine's emerald dragonfly (Somatochlora hineana) is a dragonfly in the family Corduliidae.

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Hobby (bird)

A hobby is a fairly small, very swift falcon with long, narrow wings.

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Hopi

The Hopi are a Native American tribe, who primarily live on the Hopi Reservation in northeastern Arizona.

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Hori Bakusui

Hori Bakusui 堀麦水 (1718-1783) was a major Japanese poet of the Matsuo Bashō revival, writing traditional style haiku poems.

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Hydrachnidia

Hydrachnidia, also known as "water mites", Hydracarina or Hydrachnellae, are a group of mites covering more than 40 families and 5 000 species (Smith & Cook 1991) found in freshwater and marine habitats.

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Iceland

Iceland is a Nordic island country in the North Atlantic, with a population of and an area of, making it the most sparsely populated country in Europe.

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Incertae sedis

Incertae sedis (Latin for "of uncertain placement") is a term used for a taxonomic group where its broader relationships are unknown or undefined.

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Indomalayan realm

The Indomalayan realm is one of the eight biogeographic realms.

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Indonesia

Indonesia (or; Indonesian), officially the Republic of Indonesia (Republik Indonesia), is a transcontinental unitary sovereign state located mainly in Southeast Asia, with some territories in Oceania.

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Insect

Insects or Insecta (from Latin insectum) are hexapod invertebrates and the largest group within the arthropod phylum.

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Insect migration

Insect migration is the seasonal movement of insects, particularly those by species of dragonflies, beetles, butterflies and moths.

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Insect wing

Insect wings are adult outgrowths of the insect exoskeleton that enable insects to fly.

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Instar

An instar (from the Latin "form", "likeness") is a developmental stage of arthropods, such as insects, between each moult (ecdysis), until sexual maturity is reached.

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International Union for Conservation of Nature

The International Union for Conservation of Nature (IUCN; officially International Union for Conservation of Nature and Natural Resources) is an international organization working in the field of nature conservation and sustainable use of natural resources.

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Iridescence

Iridescence (also known as goniochromism) is the phenomenon of certain surfaces that appear to gradually change colour as the angle of view or the angle of illumination changes.

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Kabushiki gaisha

A or kabushiki kaisha, commonly abbreviated KK, is a type of defined under the Companies Act of Japan.

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Kamchatka Peninsula

The Kamchatka Peninsula (полуо́стров Камча́тка, Poluostrov Kamchatka) is a 1,250-kilometre-long (780 mi) peninsula in the Russian Far East, with an area of about 270,000 km2 (100,000 sq mi).

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Labrum (arthropod mouthpart)

The labrum is a flap-like structure that lies immediately in front of the mouth in almost all extant Euarthropoda.

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Lafcadio Hearn

Patrick Lafcadio Hearn (Πατρίκιος Λευκάδιος Χερν; 27 June 1850 – 26 September 1904), known also by the Japanese name, was a writer, known best for his books about Japan, especially his collections of Japanese legends and ghost stories, such as Kwaidan: Stories and Studies of Strange Things.

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Larva

A larva (plural: larvae) is a distinct juvenile form many animals undergo before metamorphosis into adults.

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Libellulidae

The skimmers or perchers and their relatives form the Libellulidae, the largest dragonfly family in the world.

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Libelluloidea

Libelluloidea is a superfamily of dragonflies.

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Lift (force)

A fluid flowing past the surface of a body exerts a force on it.

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Looming

Looming is a term found in the study of perception, as it relates directly to psychology.

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Macromiidae

The insect family Macromiidae contains the dragonfly species known as cruisers or skimmers.

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Mail (armour)

Mail or maille (also chain mail(le) or chainmail(le)) is a type of armour consisting of small metal rings linked together in a pattern to form a mesh.

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Matsuo Bashō

, born 松尾 金作, then, was the most famous poet of the Edo period in Japan.

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Meganeuropsis

Meganeuropsis is an extinct genus of griffinfly, order Meganisoptera, known from the Early Permian of North America, and represents the biggest known insect of all time.

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Meganisoptera

Meganisoptera is an extinct order of very large to gigantic insects, occasionally called griffinflies.

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Merlin (bird)

The Merlin (Falco columbarius) is a small species of falcon from the Northern Hemisphere, with numerous subspecies throughout North America and Eurasia.

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Mesothorax

The mesothorax is the middle of the three segments in the thorax of an insect, and bears the second pair of legs.

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Metamorphosis

Metamorphosis is a biological process by which an animal physically develops after birth or hatching, involving a conspicuous and relatively abrupt change in the animal's body structure through cell growth and differentiation.

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Metathorax

The metathorax is the posterior of the three segments in the thorax of an insect, and bears the third pair of legs.

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Middle Kingdom of Egypt

The Middle Kingdom of Egypt (also known as The Period of Reunification) is the period in the history of ancient Egypt between circa 2050 BC and 1710 BC, stretching from the reunification of Egypt under the impulse of Mentuhotep II of the Eleventh Dynasty to the end of the Twelfth Dynasty.

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Midge

Midges are a group of insects that include many kinds of small flies.

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Mojave Desert

The Mojave Desert is an arid rain-shadow desert and the driest desert in North America.

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Monophyly

In cladistics, a monophyletic group, or clade, is a group of organisms that consists of all the descendants of a common ancestor.

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Moses Harris

Moses Harris (15 April 1730 – c. 1788) was an English entomologist and engraver.

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Mosquito

Mosquitoes are small, midge-like flies that constitute the family Culicidae.

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Moth

Moths comprise a group of insects related to butterflies, belonging to the order Lepidoptera.

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Motion camouflage

Motion camouflage is camouflage which provides a degree of concealment for a moving object, given that motion makes objects easy to detect however well their coloration matches their background or breaks up their outlines.

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Names of Japan

The word Japan is an exonym, and is used (in one form or another) by a large number of languages.

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Navajo

The Navajo (British English: Navaho, Diné or Naabeehó) are a Native American people of the Southwestern United States.

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Nearctic realm

The Nearctic is one of the eight biogeographic realms constituting the Earth's land surface.

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Neopetalia punctata

Neopetalia punctata is a dragonfly, the only member of the family Neopetaliidae.

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Neotropical realm

The Neotropical realm is one of the eight biogeographic realms constituting the Earth's land surface.

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Neuron

A neuron, also known as a neurone (British spelling) and nerve cell, is an electrically excitable cell that receives, processes, and transmits information through electrical and chemical signals.

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New Year

New Year is the time or day at which a new calendar year begins and the calendar's year count increments by one.

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New Year's Day

New Year's Day, also called simply New Year's or New Year, is observed on January 1, the first day of the year on the modern Gregorian calendar as well as the Julian calendar.

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New Year's Eve

In the Gregorian calendar, New Year's Eve (also known as Old Year's Day or Saint Sylvester's Day in many countries), the last day of the year, is on 31 December which is the seventh day of Christmastide.

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Nighthawk

A nighthawk is a nocturnal bird of the subfamily Chordeilinae, within the nightjar family, Caprimulgidae, native to the western hemisphere.

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Northern emerald

The northern emerald (Somatochlora arctica) is a middle-sized species of dragonfly.

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Norwegian language

Norwegian (norsk) is a North Germanic language spoken mainly in Norway, where it is the official language.

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Nymph (biology)

In biology, a nymph is the immature form of some invertebrates, particularly insects, which undergoes gradual metamorphosis (hemimetabolism) before reaching its adult stage.

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Obelisk posture

The obelisk posture is a handstand-like position that some dragonflies and damselflies assume to prevent overheating on sunny days.

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Oceania

Oceania is a geographic region comprising Melanesia, Micronesia, Polynesia and Australasia.

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Odonata

Odonata is an order of carnivorous insects, encompassing the dragonflies (Anisoptera) and the damselflies (Zygoptera).

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Odonatoptera

The Odonatoptera are a superorder (sometimes treated as an order) of ancient winged insects, placed in the Palaeoptera which probably form a paraphyletic group however.

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Old World flycatcher

The Old World flycatchers are a large family, the Muscicapidae, of small passerine birds mostly restricted to the Old World (Europe, Africa and Asia).

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Ommatidium

The compound eyes of arthropods like insects, crustaceans and millipedes are composed of units called ommatidia (singular: ommatidium).

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Order (biology)

In biological classification, the order (ordo) is.

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Ovipositor

The ovipositor is an organ used by some animals for the laying of eggs.

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Oxford University Press

Oxford University Press (OUP) is the largest university press in the world, and the second oldest after Cambridge University Press.

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Palearctic realm

The Palearctic or Palaearctic is one of the eight biogeographic realms on the Earth's surface, first identified in the 19th century, and still in use today as the basis for zoogeographic classification.

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Pamir Mountains

The Pamir Mountains, or the Pamirs, are a mountain range in Central Asia at the junction of the Himalayas with the Tian Shan, Karakoram, Kunlun, Hindu Kush, Suleman and Hindu Raj ranges.

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Pantala flavescens

Pantala flavescens, the globe skimmer, globe wanderer or wandering glider, is a wide-ranging dragonfly of the family Libellulidae.

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Parasitism

In evolutionary biology, parasitism is a relationship between species, where one organism, the parasite, lives on or in another organism, the host, causing it some harm, and is adapted structurally to this way of life.

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Pennsylvanian (geology)

The Pennsylvanian (also known as Upper Carboniferous or Late Carboniferous) is, in the ICS geologic timescale, the younger of two subperiods (or upper of two subsystems) of the Carboniferous Period.

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Permian

The Permian is a geologic period and system which spans 47 million years from the end of the Carboniferous Period million years ago (Mya), to the beginning of the Triassic period 251.902 Mya.

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Permian–Triassic extinction event

The Permian–Triassic (P–Tr or P–T) extinction event, colloquially known as the Great Dying, the End-Permian Extinction or the Great Permian Extinction, occurred about 252 Ma (million years) ago, forming the boundary between the Permian and Triassic geologic periods, as well as the Paleozoic and Mesozoic eras.

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Petalura gigantea

Petalura gigantea, the giant dragonfly or south-eastern petaltail, is one of the world's largest dragonflies, with the males having an abdomen 6 - 7.5 cm long and a wingspan up to 11 cm, while females have an abdomen 8 - 9.5 cm long and a wingspan up to 12.5 cm.

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Petaluridae

The petaltails of the family Petaluridae are apparently the most ancient of the extant true dragonflies (infraorder Anisoptera), having fossil members from as early as the Jurassic (over 150 million years ago).

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PH

In chemistry, pH is a logarithmic scale used to specify the acidity or basicity of an aqueous solution.

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Phase (waves)

Phase is the position of a point in time (an instant) on a waveform cycle.

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Phragmites

Phragmites is a genus of four species of large perennial grasses found in wetlands throughout temperate and tropical regions of the world.

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Portmanteau

A portmanteau or portmanteau word is a linguistic blend of words,, p. 644 in which parts of multiple words or their phones (sounds) are combined into a new word, as in smog, coined by blending smoke and fog, or motel, from motor and hotel.

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Portugal

Portugal, officially the Portuguese Republic (República Portuguesa),In recognized minority languages of Portugal: Portugal is the oldest state in the Iberian Peninsula and one of the oldest in Europe, its territory having been continuously settled, invaded and fought over since prehistoric times.

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Predation

Predation is a biological interaction where a predator (a hunting animal) kills and eats its prey (the organism that is attacked).

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Princeton University Press

Princeton University Press is an independent publisher with close connections to Princeton University.

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Prothorax

The prothorax is the foremost of the three segments in the thorax of an insect, and bears the first pair of legs.

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Puebloans

The Puebloans or Pueblo peoples are Native Americans in the Southwestern United States who share common agricultural, material and religious practices.

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Pupa

A pupa (pūpa, "doll"; plural: pūpae) is the life stage of some insects undergoing transformation between immature and mature stages.

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Rectum

The rectum is the final straight portion of the large intestine in humans and some other mammals, and the gut in others.

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San Antonio Express-News

The San Antonio Express-News is a daily newspaper in San Antonio, Texas.

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Sapphire

Sapphire is a precious gemstone, a variety of the mineral corundum, an aluminium oxide.

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Scarce chaser

The scarce chaser (Libellula fulva) is a species of dragonfly.

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Sex ratio

The sex ratio is the ratio of males to females in a population.

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Sexual conflict

Sexual conflict or sexual antagonism occurs when the two sexes have conflicting optimal fitness strategies concerning reproduction, particularly over the mode and frequency of mating, potentially leading to an evolutionary arms race between males and females.

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Sexual selection

Sexual selection is a mode of natural selection where members of one biological sex choose mates of the other sex to mate with (intersexual selection), and compete with members of the same sex for access to members of the opposite sex (intrasexual selection).

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Simple eye in invertebrates

A simple eye (sometimes called a pigment pit) refers to a type of eye form or optical arrangement that contains a single lens.

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Sister group

A sister group or sister taxon is a phylogenetic term denoting the closest relatives of another given unit in an evolutionary tree.

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Snake

Snakes are elongated, legless, carnivorous reptiles of the suborder Serpentes.

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Solar panel

Photovoltaic solar panels absorb sunlight as a source of energy to generate electricity.

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Southern hawker

The southern hawker or blue hawker (Aeshna cyanea) is a species of hawker dragonfly.

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Southern United States

The Southern United States, also known as the American South, Dixie, Dixieland, or simply the South, is a region of the United States of America.

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Stratiotes aloides

Statiotes aloides, commonly known as water soldiers or water pineapple, is a submerged aquatic plant native to Europe and northwestern Asia.

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Structural coloration

Structural coloration is the production of colour by microscopically structured surfaces fine enough to interfere with visible light, sometimes in combination with pigments.

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Substrate (biology)

In biology, a substrate is the surface on which an organism (such as a plant, fungus, or animal) lives.

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Swallow

The swallows and martins, or Hirundinidae, are a family of passerine birds found around the world on all continents except Antarctica.

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Sweden

Sweden (Sverige), officially the Kingdom of Sweden (Swedish), is a Scandinavian country in Northern Europe.

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Swift

The swifts are a family, Apodidae, of highly aerial birds.

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Sympetrum

Sympetrum is a genus of small to medium-sized skimmer dragonflies, known as darters in the UK and as meadowhawks in North America.

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Sympetrum danae

Sympetrum danae, the black darter or black meadowhawk is a dragonfly found in northern Europe, Asia, and North America.

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Synthemistidae

The Synthemistidae are the family of dragonflies commonly known as tigertails, or sometimes called southern emeralds.

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Tadpole

A tadpole (also called a pollywog) is the larval stage in the life cycle of an amphibian, particularly that of a frog or toad.

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Temperate climate

In geography, the temperate or tepid climates of Earth occur in the middle latitudes, which span between the tropics and the polar regions of Earth.

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Territory (animal)

In ethology, territory is the sociographical area that an animal of a particular species consistently defends against conspecifics (or, occasionally, animals of other species).

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Tokyo

, officially, is one of the 47 prefectures of Japan and has been the capital since 1869.

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Trematoda

Trematoda is a class within the phylum Platyhelminthes.

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Trematode life cycle stages

Trematodes are any parasitic flatworm of the class Trematoda, especially a parasitic fluke.

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Tribe (Native American)

In the United States, an Indian tribe, Native American tribe, tribal nation or similar concept is any extant or historical clan, tribe, band, nation, or other group or community of Indigenous peoples in the United States.

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Trithemis

Trithemis is a genus of dragonflies in the family Libellulidae.

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Trophic state index

Trophic State Index (TSI) is a classification system designed to rate bodies of water based on the amount of biological activity they sustain.

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Tropics

The tropics are a region of the Earth surrounding the Equator.

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University of California Press

University of California Press, otherwise known as UC Press, is a publishing house associated with the University of California that engages in academic publishing.

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University of Florida

The University of Florida (commonly referred to as Florida or UF) is an American public land-grant, sea-grant, and space-grant research university on a campus in Gainesville, Florida.

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Vertebrate

Vertebrates comprise all species of animals within the subphylum Vertebrata (chordates with backbones).

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Vipera berus

Vipera berus, the common European adderMallow D, Ludwig D, Nilson G. (2003).

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Welsh language

Welsh (Cymraeg or y Gymraeg) is a member of the Brittonic branch of the Celtic languages.

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Wetland

A wetland is a land area that is saturated with water, either permanently or seasonally, such that it takes on the characteristics of a distinct ecosystem.

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Wing

A wing is a type of fin that produces lift, while moving through air or some other fluid.

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Yellow-winged darter

The yellow-winged darter (Sympetrum flaveolum) is a dragonfly found in Europe and mid and northern China.

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Zuni

The Zuni (A:shiwi; formerly spelled Zuñi) are Native American Pueblo peoples native to the Zuni River valley.

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2018

2018 has been designated as the third International Year of the Reef by the International Coral Reef Initiative.

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2019

2019 (MMXIX) will be a common year starting on Tuesday of the Gregorian calendar, the 2019th year of the Common Era (CE) and Anno Domini (AD) designations, the 19th year of the 3rd millennium, the 19th year of the 21st century, and the 10th and last year of the 2010s decade.

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Anisoptera, Anisopteran, Anisopterans, Darner dragonfly, Dining needle, Dragon fly, Dragon-Fly, Dragon-fly, DragonflEye, Dragonflies, Dragonfly nymph, Dragonfly,, Odonta.

References

[1] https://en.wikipedia.org/wiki/Dragonfly

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