Acrocera orbiculus, also known as the top-horned hunchback, is a species of fly belonging to the family Acroceridae. The species has a holarctic distribution, ranging from North America to the Palaearctic. Etymology The specific name is the Latin diminutive noun , meaning 'a small disk'. Description "Antennae placed at the extreme top of the head, ending in a long thin arista. Venation very much reduced. Proboscis absent, or very short and stumpy" Biology The larvae are endoparasites of spiders in the families Amaurobiidae, Clubionidae and Lycosidae. References External links GBIF External images Acroceridae Insects described in 1787 Diptera of North America Asilomorph flies of Europe Endoparasites