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Stylogaster
The conopid genus ''Stylogaster'' is a group of unusual flies. It is the only genus in the subfamily Stylogastrinae, which some authorities have historically treated as a separate family Stylogastridae (or Stylogasteridae).
==Biology==
Stylogastrines are obligate associates of Cockroaches, Orthoptera, some Diptera and ants.〔Couri, M.S., Pont, A.C. & Kirk-Spriggs, A.H. 2013. New Muscidae (Diptera) hosts of ''Stylogaster'' Macquart (Diptera: Conopidae) from the Afrotropical Region. ''African Invertebrates'' 54 (2): 401–408.()〕
These flies typically use army ants' raiding columns to flush out their prey, ground-dwelling Orthoptera and/or roaches. Stylogastrines are somewhat atypical for conopids, in that the egg itself is shaped somewhat like a harpoon, with a rigid barbed tip, and the egg is forcibly jabbed into the host. The female of some species waits for army ants to flush out a target, then she dives in and jabs an egg into the host. The ''Stylogaster'' larvae then develop as endoparasitoids. This is a remarkably high-risk behavior, in that many hosts are captured and killed by the ants after a female has laid an egg in it, so many eggs are lost.
Adults can occasionally be found at flowers, feeding on nectar with their proboscis, which is longer than the body when unfolded. The female's abdomen is also folded under the body, and is the derivation of the generic name (''Stylogaster'' = "needle-tail").
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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