Arilus, or wheel bugs due to the semicircular crest on the pronotum, is a genus of true bugs in the family Reduviidae, subfamily Harpactorinae and tribe Harpactorini. Most species are found in the Americas.GBIF: Arilus Hahn, 1831 Arilus is a generalist predator of insects.
See North American wheel bug for details about a representative species. Species Five extant species plus one fossil species are included within this genus: Arilus carinatus (Forster, 1771) Arilus cristatus (Linnaeus, 1763) the North American wheel bug Arilus depressicollis (Stål, 1859) †Arilus faujasi Riou, 1999 Arilus gallus (Stål, 1872) Arilus nigriceps Herrich-Schaeffer, 1848
Three additional species originally described in the genus are currently incertae sedis. Arilus auctus Germar, 1837 Arilus collaris Herrich-Schaeffer, 1848 Arilus spiniceps Blanchard, 1843
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