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Lonchopteridae (spear-winged flies or pointed-wing flies) are a family of small (2–5 mm), slender, yellow to brownish-black Diptera, occurring all over the world. Their common name refers to their pointed wings, which have a distinct venation. Many are parthenogenic; males are very rare however at least in North American species, and have a somewhat different venation than do the females.〔Smith, K.G.V. (1969): ''Handbook for the Identification of British Insects'' 10(2ai: Diptera Lonchopteridae): 1–9.〕〔Borror, D.J.; Triplehorn, C.A. & Johnson, N.A. (1989): ''An Introduction to the Study of Insects'' (6th edition). Saunders College Publishing.〕 Spear-winged flies are common in moist, shady, grassy areas, where the larvae are found within decaying vegetation. One species, ''Lonchoptera bifurcata'', is cosmopolitan in distribution, and may have been transported via shipments of vegetables.〔〔 ==Description== For terms see Morphology of Diptera. Lonchopteridae are minute slender flies with long wings which are pointed at the apex.The head is rounded, with the outer vertical bristles, inner vertical bristles, ocellar bristles, interfrontal bristles, and bristles along the margin of the broad mouth very well developed. The mesonotum and scutellum and legs have well developed bristles.The Radial vein R has three branches (R1, R2+3, R4+5). The median vein M is furcate (M1, M2). The anal vein A merges with the cubital vein Cu (female) or terminates freely (male). 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Lonchopteridae」の詳細全文を読む スポンサード リンク
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