Tachydromiinae
Creators: name: Grootaert, Patrick
name: Shamshev, Igor V.
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy

description: Key to the genera of Tachydromiinae from the Oriental Region
1. Postpronotal lobe differentiated (Fig. 5). Eyes bare. Scutum usually distinctly longer than broad.......2
– Postpronotal lobe undifferentiated. Eyes with tiny ommatrichia. Scutum not or scarcely longer than broad.................................................................................................................................................4
2. Vein A 1 present (Fig. 10), even if sometimes faint. Mid femur thickened and armed with rows of spinelike setae ventrally ….........................................................…………….. Platypalpus Macquart, 1827
–Vein A 1 absent. Mid femur more or less slender and usually with weak setae ventrally…………………3
3. Vein CuA 2 present........................................................................................... Tachypeza Meigen, 1830
– Vein CuA 2 absent........................................................................................ Tachydromia Meigen, 1803
4. Cells br and bm subequal in length at apex (Figs 12-13, 18; if in doubt, then eyes widely separated on face and hind tibia bristly)...........……................................................…………………………….5
– Cell br much shorter than cell bm at apex…..............................…………………………………….7
5. Scutellum with 3-4 pairs of bristles. Vein A 1 present…........................ Megagrapha Melander, 1928
– Scutellum with 1-2 pairs of bristles. Vein A 1 absent…….................................………………………6
6. Legs with hind tibia bristly. Eyes usually widely separated on face and frons …………..……………… ……………..................................................................……………….... Chersodromia Walker, 1849
– Legs with hind tibia lacking bristles. Eyes contiguous on face and widely separated on frons …..… ………………………….........................................…………..………. Nanodromia Grootaert, 1994
7. Antenna with arista-like stylus dorsoapical (Fig. 26; postpedicel with dorsoapical extension). Abdominal tergites without squamiform setae, tergites 3-5 usually of subequal width......................8
– Antenna with arista-like stylus apical or subapical (postpedicel without dorsoapical extension). Some abdominal tergites often with squamiform setae laterally; if squamiform setae absent, then gena distinctly developed below eye or tergite 4 enlarged...................................................................9
8. Scutum with subequally short dorsocentrals. Rs originating at most halfway along R 1, longer than crossvein bm-cu..................................................................................................... Stilpon Loew, 1859
– Scutum with pair of long presutural dorsocentrals. Rs originating far beyond halfway along R 1, nearly as long as crossvein bm-cu……............................................... Pontodromia Grootaert, 1994
9. Gena distinctly developed below eye. Pedicel usually with very long ventral seta. Rs usually shorter than crossvein bm-cu………………............................................. Crossopalpus Bigot, 1857
– Gena scarcely extended below eye. Pedicel usually with circlet of subequally short setae. Rs usually longer, at least as long as crossvein bm-cu……….....................................……………..10
10. Occiput convex. Postpedicel conical to lanceolate. Hind tibia usually with long anterodorsal bristles. Body often with yellowish markings........................................ Elaphropeza Macquart, 1827
– Occiput somewhat flattened (head closely set upon thorax). Postpedicel oval. Hind tibia without long anterodorsal bristles. Body dark brown to black…........................……………...11
11. Abdominal tergites with squamiform setae………................................……. Drapetis Meigen, 1822
– Abdominal tergites without squamiform setae...... Sinodrapetis Yang, Gaimari & Grootaert, 2004
description: Published as part of Grootaert, Patrick & Shamshev, Igor V., 2012, The fast-running flies (Diptera, Hybotidae, Tachydromiinae) of Singapore and adjacent regions, pp. 1-162 in European Journal of Taxonomy 5 on pages 13-14, DOI: 10.5852/ejt.2012.5, http://zenodo.org/record/3715167