Mycomyopsis

Väisänen, Rauno, 2013, New Mycomya species from the Himalayas (Diptera, Mycetophilidae): 3. Subgenera Cesamya and Mycomyopsis, Zootaxa 3737 (2), pp. 129-153 : 130-131

Key to the Himalayan species of subgenera Cesamya and Mycomyopsis

1. Tergal part of male hypopygium with one, wide medial comb (and two inner combs) of spines ( Figs. 1 A, 1C, 2A, 3A, 4A).................................................................................... (subgenus Cesamya)...2

- Tergal part of male hypopygium with two separate parallel combs (and two inner combs) of spines (e.g. Figs. 6 A, 8A, 10A,12A).................................................................... (subgenus Mycomyopsis )...5

2. Sternal submedian filament (stemming from basal-middle part of deeply bilobed sternal synsclerite) short, not extending beyond the apex of sternal synsclerite ( Fig. 1 B).................................................. M. cissa sp. n.

- Sternal submedian filament long, extending far beyond the apex of sternal synclerite ( Figs. 2 B, 3B, 4B)................ 3

3. Base of tergal comb widely setose with only a narrow gap in the middle ( Fig. 3 A); gonostylus very long with a small membra- nous basal lobe much shorter than gonostylus ( Fig. 3 F)........................................... M. niltava sp. n.

- Base of tergal comb only laterally setose with a wide bare median part ( Figs. 2 A, 4A); gonostylus slightly longer than its mem- branous lobe ( Figs. 2 E, 4E)............................................................................. 4

4. Tergal lateral appendage (one on each sides of outer tergal comb) with a flattened, curved seta in the middle of its inner margin, separated almost by its length from apical flattened setae ( Fig. 2 D).................................. M. goral sp. n.

- Tergal lateral appendage without such an isolated flattened curved seta, all apical flattened setae close to each other ( Fig. 4 D)........................................................................................ M. sachak sp. n.

5. No sternal submedian filament (e.g. Figs. 5 B, 8B)........................................................... 6

- Sternal submedian filament well-developed (stemming from basal-middle part of deeply bilobed sternal synsclerite) (e.g. Figs. 9 B, 11B, 12B)........................................................................................ 9

6. Tergal lateral appendage widely and densely setose ( Figs. 5 A, 5D)..................................... M. aix sp. n.

- Tergal lateral appendage with two widely separate groups of setae, basal and apical, with narrow subapical part between them bare ( Figs. 8 C, 14D, 15C)............................................................................. 7

7. Middle part of gonostylus without a spur or a spine ( Fig.15 D), outer tergal combs rudimentary ( Fig.15 A)................................................................................................. M. unipectinata Edwards

- Middle part of gonostylus with a short spur or a strong spine ( Figs. 8 D, 14E), outer tergal combs well-developed ( Figs. 8 A, 14A).................................................................................................................................................................................................... 8

8. Tergal lateral appendage long, slender, more than 5x as long as wide, slightly curved, with a sparse group of a few basal setae ( Fig. 8 C)............................................................................... M. ducula sp. n.

- Tergal lateral appendage very long, slender, about 7x as long as wide, strongly curved, with a dense group of basal setae ( Fig. 14 D)................................................................................... M. sanar n. sp.

9. Tergal lateral appendage widely setose, without wide bare areas ( Figs. 6 C, 7C, 9C, 10C)........................... 10

- Tergal lateral appendage with two widely separate groups of setae, basal and apical, with long, slender subapical area bare ( Figs. 11 C, 12D, 13C)................................................................................ 13

10. Middle part of gonostylus without a spur or a strong spine ( Figs. 9 E, 10D)....................................... 11

- Middle part of gonostylus with a short spur or a strong spine on the opposite site of the membranous lobe ( Figs. 6 D, 6E, 7D).................................................................................................... 12

11. Sternal submedian filament short, hardly reaching apex of sternal synsclerite ( Figs. 10 B, 10D)............. M. jeti sp. n.

- Sternal submedian filament long, curved, extending well beyond apex of sternal synsclerite ( Fig. 9 B)....... M irena sp. n.

12. Apical setae of tergal lateral appendage about as long as flattened, curved subapical setae ( Fig. 6 C)....... M. alticola sp. n.

- Apical setae of tergal lateral appendage much longer than flattened, curved subapical setae ( Figs. 7 C).... M. banteng sp. n.

13. Basal part of gonostylus without a long spur ( Fig. 11 D)............................................. M. kaa sp. n.

- Basal part of gonostylus with a long spur ( Figs. 12 E, 13D)................................................... 14

14. Wing veins M and Cu with small setae.......................................................... M. naja sp. n.

- Wing veins M and Cu bare................................................................... M. pitta sp. n.

Figures

FIGURE 1. Mycomya cissa sp. n., male hypopygium. A – B tergal and sternal views, C tergal combs, posterior view with both outer and inner combs visible, twice enlarged, D tergal lateral appendage, twice enlarged, E gonostylus, twice enlarged, F tergite 8. Scale 0.2 mm.

FIGURE 2. Mycomya goral sp. n., male hypopygium. A – B tergal and sternal views, C apex of tergal spur, lateral view, twice enlarged, D tergal lateral appendage, twice enlarged, E gonostylus, twice enlarged, F apex of aedeagus, sternal view, twice enlarged. Scale 0.2 mm.

FIGURE 3. Mycomya niltava sp. n., male hypopygium. A – C tergal, sternal and lateral views, D apex of tergal spur, lateral view, twice enlarged, E tergal lateral appendage, twice enlarged, F gonostylus, twice enlarged, G tergite 8. Scale 0.2 mm.

FIGURE 4. Mycomya sachak sp. n., male hypopygium. A – B tergal and lateral views, C apex of tergal spur, lateral view, twice enlarged, D tergal lateral appendage, twice enlarged, E gonostylus, twice enlarged, F apex of aedeagus, lateral view, twice enlarged. Scale 0.2 mm.

FIGURE 5. Mycomya aix sp. n., male hypopygium. A – B tergal and sternal views, C. detail of tergal combs, twice enlarged, D tergal lateral appendage, twice enlarged, E gonostylus, twice enlarged, F apex of aedeagus, lateral view, twice enlarged G tergite 8. Scale 0.2 mm.

FIGURE 6. Mycomya alticola sp. n., male hypopygium. A – B tergal and sternal views, C tergal lateral appendage, twice enlarged, D – E gonostyli (of holotype) in different positions, twice enlarged, F apex of aedeagus, sternal view, twice enlarged. Scale 0.2 mm.

FIGURE 7. Mycomya banteng sp. n., male hypopygium. A – B tergal and lateral views, C tergal lateral appendage, twice enlarged, D gonostylus, twice enlarged. Scale 0.2 mm.

FIGURE 8. Mycomya ducula sp. n., male hypopygium. A – B tergal and sternal views, C tergal lateral appendage, twice enlarged, D gonostylus, twice enlarged, E apex of aedeagus, sternal view, twice enlarged. Scale 0.2 mm.

FIGURE 9. Mycomya irena sp. n., male hypopygium. A – B tergal and sternal views, C tergal lateral appendage, twice enlarged, D flattened setae of apical part of tergal lateral appendage, E gonostylus, twice enlarged, F tergite 8. Scale 0.2 mm.

FIGURE 10. Mycomya jeti sp. n., male hypopygium. A – B tergal and sternal views, C tergal lateral appendage, twice enlarged, D gonostylus and sternal submedian filament, twice enlarged, E apex of aedeagus, sternal view, twice enlarged. Scale 0.2 mm.

FIGURE 11. Mycomya kaa sp. n., male hypopygium. A – B tergal and sternal views, C tergal lateral appendage, twice enlarged, D gonostylus (of holotype), twice enlarged, E apex of second gonostylus (of holotype; unusual form), twice enlarged. Scale 0.2 mm.

FIGURE 12. Mycomya naja sp. n., male hypopygium. A – C tergal, sternal and lateral views, D tergal lateral appendage, twice enlarged, E gonostylus, twice enlarged, F apex of aedeagus, sternal view, twice enlarged, G. tergite 8. Scale 0.2 mm.

FIGURE 14. Mycomya sanar sp. n., male hypopygium. A – C tergal, sternal and lateral views, D tergal lateral appendage, twice enlarged, E gonostylus, twice enlarged, F apex of aedeagus, sternal view, twice enlarged. Scale 0.2 mm.

FIGURE 15. Mycomya unipectinata Edwards, male hypopygium. A – B tergal and sternal views, C tergal lateral appendage, twice enlarged, D gonostylus, twice enlarged, E tergite 8. Scale 0.2 mm.