Asioclinocera, Saigusa & Sinclair Introduction, 2022

Saigusa, Toyohei & Sinclair Introduction, Bradley J., 2022, A new genus of Clinocerinae (Diptera: Empididae) from Taiwan and Yunnan (China), Bonn zoological Bulletin 71 (2), pp. 177-183 : 178-180

Key to Palaearctic genera of Clinocerinae

1. Sc evanescent apically ( Sinclair 1995: fig. 64) ........ ............................................. Proclinopyga Melander

– Sc complete, reaching costal vein .......................... 2

2. R 1 with macrotrichia arising from dorsal surface ( Saigusa & Sinclair 2021: fig. 40) ............................ .............................................. Trichoclinocera Collin

– R 1 without macrotrichia ......................................... 3

3. Proboscis as long as height of head; labrum long and blade-like, extending length of proboscis; labellum narrow, not sucker-like ( Sinclair 1995: fig. 58) ....... .............................................. Roederiodes Coquillett

– Proboscis shorter than height of head; labrum short, subtriangular, encircled by large sucker-like labellum .................................................................. 4

4. Gena divided by frontoclypeal suture extending from palpus to lower margin of eye ( Sinclair 1995: fig. 60) .................................................................... 5

– Gena divided by frontoclypeal suture extending from palpus to facial ridge ( Sinclair 1995: fig. 59) ....... 11

5. Neck arising high on occiput; head usually narrow, extending obliquely forward ( Sinclair 1995: fig. 60); wing usually with circular white spots ( Sinclair 1995: fig. 69) .................. Dolichocephala Macquart

– Neck arising near centre of occiput; head hypognathous; wing without circular white spots .. 6

6. R 4+5 forked distal to apex of R 2+3 ( Smith 1965: fig. 53) ................................. Rhyacodromia Saigusa

– R 4+5 forked proximal to apex of R 2+3 ...................... 7

7. Arista-like stylus very slender, about as long as head height ( Fig. 2 ); apical scutellar setae closely approximated; radial fork arising near apex of cell dm, with cell r 4 nearly one-third length of wing ( Fig. 3 ) ................................ Asioclinocera gen. nov.

– Arista-like stylus usually thickened, shorter than height of head ( Sinclair 1995: fig. 57); apical scutellar setae widely separated; radial fork arising well distant of cell dm, with cell r 4 nearly one-fifth length of wing ( Sinclair 1995: fig. 67) ................... 8

8. Lower margin of face entire, without median notch and ridge; phallus with non-articulated apical filament or distiphallus ( Sinclair 1995: fig. 21); female abdomen attenuated ......... Clinocera Meigen

– Lower margin of face with notch; if notch lacking, phallus with biarticulated distiphallus ( Sinclair 1995: fig. 49) and female abdomen truncate (e.g., Bergenstammia nudipes ( Loew, 1858)) ................. 9

9. Face with setulae along inner margin of eye ............ ............................................................ Kowarzia Mik

– Face lacking setulae along inner margin of eye ... 10

10. Pulvilli vestigial and empodia reduced, length less than one-third length of tarsal claws ........................ .................................................. Bergenstammia Mik

– Pulvilli and empodia well developed and pad-like, at least as long as tarsal claws ............ Phaeobalia Mik

11. Clypeus prominent and clearly separated from face ( Sinclair 1995: fig. 59) ................. Hypenella Collin

– Clypeus not prominent or separated from face .... 12

180 Toyohei Saigusa & Bradley J. Sinclair

12. Gena strongly tapered with similar sized proboscis; posterior margin of eye straight ............................... ..................................................... Clinocerella Engel

– Gena gradually tapered with broad proboscis; posterior margin of eye rounded ( Sinclair 1995: fig. 61) ............................. Wiedemannia Zetterstedt

Figures

Figs 1–3. Asioclinocera formosana gen. et sp. nov., lateral view. 1. Habitus. 2. Head, antennae and fore leg, cleared specimen. 3. Wing. Scale bars: 1 = 1.0 mm; 2 = 0.25 mm; 3 = 0.3 mm. Abbreviations: dm = discal medial cell; lbr = labrum; R1 = anterior branch of radius; R 4 = upper branch of third branch of radius; R 5 = lower branch of third branch of radius.