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Remarks:
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second aristomere 3 to 7 times as long as wide; postpedicel at least 2 times as long as pedicel; parafacial strongly narrowed ventrally, at its narrowest point 1/8 to 1/4 as wide as at base of antenna; vertex of male at least 1.3 times as wide as eye in dorsal view; setulae on posteroventral half of head all black, without any pale hair-like setula; subapical scutellar setae more or less convergent; second costal section with fine setulae ventrally; posterior proepimeral seta often antero-proclinate; wing cell r4+5, if complete, without a petiole; base of R4+5 with a single setula or seta; some species without postangular section of M; abdominal tergites 3 and 4 with narrow basal bands of pruinescence, divided in the dorsal midline of abdomen, or abdomen without pruinescence
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