Medetera
Creators: name: Naglis, Stefan
name: Bickel, Daniel J.
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Dolichopodidae
Medetera

description: Key to male Medetera of Sri Lanka
The key is mainly based on Bickel (1987) including only species from Sri Lanka and enhanced with the newly described species.
1 Mesonotum bright metallic green or blue violet; fore tarsomere 2 and 3 of male flattened (Fig. 1); male hind tibia with apical tooth; dorsal surstylar arm prolonged, ventral arm reduced or lost.............................................. 2
- Mesonotum dark metallic green or black; fore tarsomeres normal; male hind tibia usually without apical tooth; dorsal and ven- tral surstylar arm subequal............................................................................. 4
2 Thoracic setae yellow; dorsal surstylar arm greatly expanded and rounded apically (Figs 1 A, 2)........ peradeniya sp. nov.
- Thoracic setae black; dorsal surstylar arm parallel-sided (e.g., Fig. 3)........................................... 3
3 First flagellomere yellowish; vein M subparallel with R4+5 before wing margin; lower calypter with yellowish setae; surstylus with 2 normal setae ventrally; ventral arm of cercus with normal setae (see Bickel 1987, figs. 3a, b)... platychira de Meijere
- First flagellomere black; vein M distinctly converging towards R4+5 to wing margin; lower calypter with black setae; surstylus with 1 normal and 1 curved flattened seta ventrally; ventral arm of cercus with 3–4 long sinuate setae (Figs 1 B, 3).............................................................................................. kandyensis sp. nov.
4 4–6 strong dorsocentral setae present, anterior setae decreasing in size............................................ 5
- Only 2 strong dorsocentral setae present, anterior setae hair-like; hypopygium (Fig. 5).............. colombensis sp. nov.
5 5–6 strong dorsocentrals present; hypopygium (Fig. 4)......................................... nuwarensis sp. nov.
- 4 strong dorsocentrals present, anterior 2 setae sometimes smaller.............................................. 6
6 Male hind basitarsus with distinct basal anteroventral tooth; hypopygium pyriform; epandrial seta absent (Fig. 6)........ 7
- Male hind basitarsus without tooth; hypopygium subrectangular; epandrial seta present (see Bickel 1987, fig. 17h)....... 8
7 Thorax with 3 bronze vittae; 4 strong dorsocentrals, decreasing in size anteriorly; epandrial lobes each with an apically hairy seta; ventral surstylar lobe with 1 strong apical seta; apical blade-like seta on cercus with serrate external margin (see Bickel 1987, fig. 18b)...................................................................... grisescens de Meijere
- Thorax without vittae; anterior 2 dorsocentrals distinctly shorter than posterior 2 bordering mesonotal depression; epandrial lobes with an apically hairy and an apically flattened seta; apical blade-like seta on cercus with smooth external margin (Fig. 6)................................................................................... subgrisescens sp. nov.
8 Thoracic setae yellow; fore and mid coxae with silvery pruinosity (see Bickel 1987, Fig. 17h).......... pumila de Meijere
- Thoracic setae black; coxae without silvery pruinosity....................................................... 9
9 Surstylus expanded dorsally; cercus with curled pedunculate seta (see Bickel 1987, fig. 16d)............. chandleri Bickel
- Surstylus parallel-sided; cercus without curled pedunculate seta (see Bickel 1987, fig. 16e).......... austroapicalis Bickel
description: Published as part of Naglis, Stefan & Bickel, Daniel J., 2012, Medetera (Diptera, Dolichopodidae) of Sri Lanka, pp. 55-63 in Zootaxa 3188 on page 56, DOI: 10.5281/zenodo.210568