The American lobster (Homarus americanus) is a species of lobster found on the Atlantic coast of North America, chiefly from Labrador to New Jersey.
Americanus, a Latin adjective meaning American, may refer to.
Habronattus americanus is a species of jumping spiders from the Salticidae family.
Heliocarpus americanus is a tropical tree native to Central America, and native throughout Mexico.
Hemitripterus americanus, commonly known as the sea raven, is a species of fish belonging to the family Hemitripteridae, found along the Atlantic coast of North America.
The Strepsiptera (translation: "twisted wing"', giving rise to the insects' common name, twisted-wing parasites) are an endopterygote order of insects with nine extant families making up about 600 species.