Mycomya aonyx, Väisänen, Rauno, 2013

Väisänen, Rauno, 2013, New Mycomya species from the Himalayas (Diptera, Mycetophilidae): 2. Subgenera Calomycomya, Cymomya, Neomycomya and Pavomya subg. n., Zootaxa 3666 (3), pp. 301-318 : 309-310

Mycomya aonyx sp. n.

Figs. 4 A–D

Material examined. Holotype. 3. MYANMAR, N.E. Burma, Kambaiti, 2000 m, 13.V. 1934, Malaise (in MZH). Paratypes ( 3 only). Kambaiti, 2000 m, 31.III. 1934, Malaise, 1 3 (in MZH); same locality, 11. V. 1934, 1 3 (in MZH); same locality, 7000 ft., 11.V. 1934, 6 3 and 1 Ƥ (in MZH); same locality, 2000 m, 13.V. 1934, 1 Ƥ (in MZH); same locality, 14.V. 1934, 1 3 (in MZH); same locality, 23.V. 1934, 1 3 (in MZH); same locality, 25.V. 1934, 1 3 (in MZH); same locality, 27.V. 1934, 1 3 (in MZH); same locality, 4.VI.1934, 12 3 (in MZH); same locality, 1800 m, 7.VI. 1934, 1 3 (in MZH); same locality, 2000 m, 12–17. VI. 1934, 1 3 (in MZH); same locality, VI. 1934, 1 3 (in MZH).

Description. 3. Head. Palp and other mouthparts yellow to yellowish, face brownish, posterior parts of head brown. Antenna brownish, scape, pedicel and base of 1 st flagellomere yellow. Length of 1 st flagellomere about 2.5 x, 2 nd flagellomere 1.5 x, its width. Thorax. Pronotum yellow, with 3–4 long setae. Scutum light brownish with 3 indistinct brownish longitudinal stripes, sometimes scutum brownish with yellowish longitudinal stripes. Anepisternum and preepisternum brownish. Scutellum brownish, with 4 long setae. Laterotergite brownish. Mediotergite brownish, bare. Wing. Length 3.2–4.1 mm. Wing hyaline, wing apex and small cell sometimes very slightly infuscate. Sc ending in R 1 distad of middle of small cell, Sc 1 missing, seldom broken, very short. Apical part of Sc bearing 9–17 small setae. Small cell about 1.5–2.5 x long as wide. Cu fork slightly proximal, below or slightly distal to M fork. M ratios: 0.63–0.95, 0.85–1.18. Cu ratios: 0.67–0.77, 1.00– 1.12. Small setae: M petiole: 0; M 1: +; M 2: +; Cu petiole: 0; Cu 1: 2 –+; Cu 2: 3 –+. Halter yellowish. Legs. Coxae and femora yellow, tibiae and tarsi brownish to brown. Coxa 2 without spur. Leg ratios: bt 1:t 1 = 0.78–0.80, bt 2:t 2 = 0.69–0.73, bt 3:t 3 = 0.55– 0.65. Abdomen. Tergites 1–5 brownish to brown, sometimes with yellow anterolateral spots, 6–7 brown. Sternites 1–5 yellowish, 6–7 brownish. Hypopygium. Figs. 4 A–D, yellow. Sternal lateral appendage comparatively short, wide, slightly D-shaped with middle part widest, apically rounded. Sternal submedian filament very slightly curved, relatively long, but shorter than sternal lateral appendage. Aedeagus apically rounded in lateral view ( Fig. 4 C). Female. Wing length 4.0 mm. Thorax as in 3, scutum with indistinct color pattern, brownish with 2–3 paler longitudinal stripes. Abdominal tergites 1–5 brownish to brown, with large yellow anterolateral spots, 6 brown with yellowish anterolateral spots, 7 brown, sternites 1–5 yellow, 6–7 brownish. Leg ratios: bt 1:t 1 = 0.79, bt 2:t 2 = 0.71, bt 3:t 3 = 0.60. Terminalia yellowish.

Discussion. The apically rounded, D-shaped sternal lateral appendage of M. aonyx is widest at the midlength ( Fig. 4 B), differing from the other species of the subgenus Cymomya . Also, the diagnostic sternal submedian filament is shorter than the sternal lateral appendage ( Figs. 4 A–B).

Etymology. The species name is a noun in apposition and refers to the clawless otter (genus Aonyx ).