Mycomya jeti , Väisänen, Rauno, 2013

Väisänen, Rauno, 2013, New Mycomya species from the Himalayas (Diptera, Mycetophilidae): 3. Subgenera Cesamya and Mycomyopsis, Zootaxa 3737 (2), pp. 129-153: 144-145

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Mycomya jeti

sp. n.

Mycomya jeti  sp. n.

Figs. 10View FIGURE 10 A –E

Material studied. Holotype. ♂. NEPAL, Ktmd. Pulchauki, 6800 ', Mal. tr., 14.VII. 1967, Can Nepal Exp. (in CNC). Paratypes. Same data as holotype, but 6600 ', 18.VII. 1967, 9 ♂♂ (7 ♂♂ in CNC, 2 ♂♂ in MZH); same data, but 6600 ', 16.VIII. 1967, 1 ♂ (in CNC); Ktmd., Godavari, R. Bot. Gdn., 5000 ', 6.VIII. 1967, Can. Nepal Exp., 1 ♂ (in CNC); Dobang Kharka, 83 ° 24 'E, 28 ° 36 'N, 9.X. 1971, A. Nakanishi, 1 ♂ (in KUC). Other material. MYANMAR, Kambaiti, 7000 ft., 11.V. 1934, Malaise, 4 ♂♂ (in MZH); same data, 2000 m, 13.V. 1934, 1 ♂ (in MZH); same data, 4.VI. 1934, 1 ♂ (in MZH); same data, 7.VI. 1934, 2 ♂♂ (in MZH).

Description. ♂. Head. Palp yellowish to brownish, other mouthparts yellow, face yellow, posterior parts of head brownish. Antenna brownish, scape, pedicel and base of 1 st flagellomere yellow. Length of 1 st flagellomere about 3 x, 2 nd flagellomere 2 x, its width. Thorax. Pronotum yellow, with 2 long setae. Scutum brownish with indistinct stripes, anterolateral corners yellow. Anepisternum and preepisternum yellow. Scutellum yellow, with 4 long setae. Laterotergite yellowish. Mediotergite yellowish, bare. Wing. Wing length 2.8–3.7 mm. Wing hyaline. Sc ending in R 1 near or slightly proximad of middle of small cell, Sc 1 missing. Apical part of Sc bearing 4–9 small setae. Small cell about 1.5 x as long as wide. Cu slightly distal to M fork. M ratios: 0.91 –1.00, 1.25–1.39. Cu ratios: 0.82–0.94, 1.34–1.47. Small setae: M petiole: 0; M 1: 0; M 2: 0; Cu petiole: 0; Cu 1: 0; Cu 2: 0. Halter pale yellowish. Legs. Coxae yellow, femora yellow, tibiae and tarsi brownish to brown. Coxa 2 without spur. Leg ratios: bt 1:t 1 = 0.72–0.76, bt 2:t 2 = 0.64–0.65, bt 3:t 3 = 0.53–0.54. Abdomen. Tergites light brownish, sternites slightly paler. Hypopygium. Figs. 10View FIGURE 10 A –E: yellow. Tergal part with 2 pairs of combs, outer combs widely separated from each other. Tergal lateral appendage long, slender, at least 5 x as long as its narrowest part, apically slightly wider, with few setae, and several flattened subapical setae ( Fig. 10View FIGURE 10 C). Sternal submedian filament short, only slightly curved, not extending beyond apex of sternal synsclerite. Gonostylus about 3 x as long as wide, curved, with 4–7 subapical teeth in 2 groups, 1 strong seta, and membranous lateral lobe about ½ of length of main branch of gonostylus ( Fig.View FIGURE 10

10 D). Sternal synsclerite with narrow, slightly curved appendage near base of gonostylus. Aedeagus with 2 slender, lateral lobes extending slightly beyond its apex ( Fig. 10View FIGURE 10 E).

Discussion. Mycomya jeti  resembles Eastern Palaearctic M. neodentata Väisänen, 1984  and Chinese M. odontoda Yang  & Wu, 1988 and M. dentalosa Yang  & Wu, 1988, in having short and almost straight sternal submedian appendage ( Figs. 10View FIGURE 10 B, 10 D), but differs from them in the other details of the male hypopygium. The gonostylus of M. neodentata  is very strongly curved and the two groups of the teeth are widely separated from each other (Väisänen 1984: fig. 1034). Mycomya odontoda  , which is known from Fujian and Guizhou, southern China, lacks the several flattened subapical setae of the tergal lateral appendage which are present in M. jeti  ( Fig. 10View FIGURE 10 C). The tergal lateral appendage of M. dentalosa  , known from different parts of China (Guizhou, Hunan, Heilongjiang), is much broader than in M. jeti  and the gonostylus is straight and its membranous lobe is very large.

Etymology. The species name is a noun in apposition and refers to the snowman in the Himalayan Tibetan mythology.