Medetera
Creators: name: Tang, Chufei
name: Wang, Baohai
name: Yang, Ding
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Dolichopodidae
Medetera

description: Key to species (males) of Medetera in the Himalayas
(modified from Bickel 1987)
1 Small, body length less than 1.5 mm ..................................................................... 2
- Larger, body length more than 2.0 mm.................................................................... 3
2 Legs mainly yellow (Bickel 1987)......................................................... M. chillcotti Bickel
- Legs dark metallic green to black (Becker 1922)............................................ M. adsumpta Becker
3 Thorax with 3 strong dc (Becker 1922).................................................... M. nudicoxa Becker
- Thorax at least with 4 strong dc......................................................................... 4
4 Hind tarsomere 1 with obvious dentate av; epandrium pyriform, inflated basally; epandrial lobes with bases almost completely fused, forming an elongate digitation process, from which the two bristles arise; hypandrium and phallus elongate and narrow in ventral view (Fig. 13) (diadema-veles group).............................................................. 5
- Hind tarsomere 1 without dentate av; epandrium subrectangular; epandrial lobes of epandrium present with bases distinct and separated; hypandrium forming an elongate inverted trough over phallus, held out at angle from epandrium in ventral view (Figs 6, 9) (apicalis group)............................................................................. 6
5 Legs mainly yellow; bristles on epandrial lobes branched distally; cercus with apical toothed blade-like bristle, with distinctive midventral clavate projection (Bickel 1987, fig. 18b).................................... M. grisenscens De Meijere
- Legs mainly black (Fig. 3); bristles on epandrial lobes normal; cercus with thin, smooth claw-like apical bristle, with 1 small projection apically (Figs 12–13).......................................................... M. sinuosa sp. nov.
6 Antenna all yellow (Fig. 1); epandrium with 1 long apical bristle (Fig. 6); ventral surstylus with 1 brown stripe at middle.................................................................................. Medetera exornata sp. nov.
- Antennal flagellomere brown to black; epandrium without apical bristle; ventral surstylus without pattern............... 7
7 Proboscis greatly enlarged, almost as long as eye height (Bickel 1987, figs 17f–g).................... M. stomias Bickel
- Proboscis normal in size............................................................................... 8
8 Antennal scape and pedicel yellow....................................................................... 9
- Antenna all dark brown to black........................................................................ 10
9 Wing shorter than body; tibiae mainly yellow; cercus stout, with thin, curved dorsoapical bristle on short cuticular peduncle, with lateral leaf-shaped bristle (Bickel 1987, fig. 16e)..................................... M. austroapicalis Becker
- Wing longer than body; tibiae black; cercus obviously thinner towards tip, with lateral dentation (Yang et al. 2011, fig. 252)...................................................................................... M. xizangensis Yang
10 CuAx ratio less than 0.7 (Fig. 2); legs all black; cercus without blade-like bristle; hypandrium tapered in basal half, subparallel in apical half in ventral view (Figs 9–10).................................................... .. M. furva sp. nov.
- CuAx ratio 0.85; legs dark brown except distalmost femora yellowish; cercus with blade-like bristles; hypandrium expanded distally in ventral view................................................................................ 11
11 Epandrial bristles on short protuberance; epandrial lobes with distinct collar-like bases; short hairs present along ventral margin of epandrium between epandrial bristles and epandrial lobes; ventral surstylar arm with simple curved bristles; cercus with short blade-like bristle and long digitiform projection (Bickel 1987, figs 17c–d).................. M. himalayensis Bickel
- Epandrial bristles on flat epandrial margin; epandrial lobes arising from epandrial margin without collar–like bases; ventral epandrial margin bare; ventral surstylar arm with flattened frayed bristle; cercus with elongate curved apical bristle and ventral costate blade-like bristle (Bickel 1987, figs 17a–b)........................................... M. nepalensis Bickel
description: Published as part of Tang, Chufei, Wang, Baohai & Yang, Ding, 2015, New species of Medetera (Diptera: Dolichopodidae, Medeterinae) from Tibet, pp. 427-435 in Zootaxa 3946 (3) on page 428, DOI: 10.11646/zootaxa.3946.3.9, http://zenodo.org/record/236666