. Monographs of the Diptera of North America [microform]. Diptera; Insects; Diptères; Insectes. âINTKODICTIUN. iJO Atrfss in tliin Htatrnioiit sliniiM !)«⢠laid upon tiio rcninindir of tliu sinicliirc, wliicli is tlil litnf^itudiiiul viiu wlnmkl not 1)0 lulniittfd in llic ddlnilinn of the fitniily. Tilt' dt'linilittii id' llif (hlalulu cun llifrt-rort' be ]>u( in I lit' ft)l- jowin^; nmnnor: Front brtxiil in Itntli m'Xos ; on l)i)lli siilts of till' VI rlfx H nmri.' or k^s diVfloprd hWfllinj? runs duwn llii' IVont, iilKin wliifli, biforc tlic Itri^tlc of llio vfrii'X, ont' or tw
. Monographs of the Diptera of North America [microform]. Diptera; Insects; Diptères; Insectes. âINTKODICTIUN. iJO Atrfss in tliin Htatrnioiit sliniiM !)«⢠laid upon tiio rcninindir of tliu sinicliirc, wliicli is tlil litnf^itudiiiul viiu wlnmkl not 1)0 lulniittfd in llic ddlnilinn of the fitniily. Tilt' dt'linilittii id' llif (hlalulu cun llifrt-rort' be ]>u( in I lit' ft)l- jowin^; nmnnor: Front brtxiil in Itntli m'Xos ; on l)i)lli siilts of till' VI rlfx H nmri.' or k^s diVfloprd hWfllinj? runs duwn llii' IVont, iilKin wliifli, biforc tlic Itri^tlc of llio vfrii'X, ont' or twd frii-t itrisili's arc iiisorti'd, wliioli, liowcvcr, are wunlinn' in sonir jirnern. Olliorwirtc the front has only tlie ordinary piiltcsrcncc, or is ipiite bare, but never provided witli a second row of strong bristles aloii^r I lie i)rl»it, even when the hairs on both sides of the villa froiildlis almost aeipiire, in some few jreiiera, the idiiiructer of bristles. Frontal lissure distinct; frontal luiiuli' never pushed HO far up us to appear to be a part of the front; eviii in those {genera in whieli, on neeount of the great curvature of the fmntal fissure, as In (Julu/ta, the luiiule happens to lie higher than the anteiime, it always distinctly appears as a part of the face; in many genera it is not distinguishable from the face. The vibrissie are always wanting. The eyes are bare. The elypeus is always distinct, of various size, usiudly well developed. J'roiioscis more or less stout. Palpi rather broad, often very broad, very seliloin narrow. Metanolum larger than usual, .strongly ])rojeeiing pos- teriorly and inferiorly. P'eet generally rather stout and sliort, in some genera, however, of a considerable, although not striking, length and slenderness. Middle tibiie distinctly spurred ; front and hind tibiie spurless ; no erect prenpical bristle before the end of the ujijier side of the tlbiie. The abdomen of the male has four segments, however the first consists
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectd, booksubjectinsects
