Mycomya minutata Edwards, 1931

Väisänen, Rauno, 2014, New Mycomya species from South-East Asia (Diptera, Mycetophilidae), Zootaxa 3815 (4), pp. 526-540 : 530-531

publication ID

publication LSID


persistent identifier

treatment provided by


scientific name

Mycomya minutata Edwards, 1931


Mycomya minutata Edwards, 1931

Figs. 3 View FIGURE 3 A–E

Mycomya minutata Edwards, 1931 . Edwards 1931 b: 266.

Material studied. Lectotype, by present designation. ♂. INDONESIA, Sumatra Fort de Kock, 1926, E. Jacobson B. M. 1930 - 538 (NHM). Paralectotypes. Same data, 1 ♂, 2 ♀♀ (NHM).

Description. ♂. Head. Palp, other mouthparts and face yellow, posterior parts of head brownish to brown. Antenna brownish, scape, pedicel and base of 1 st flagellomere yellow. 1 st flagellomere about 3 x its width, 2 nd flagellomere 2 x its width. Thorax. Pronotum yellow, with 2–3 long setae. Scutum yellow with 3 brownish, posteriorly fused longitudinal stripes. Anepisternum yellow. Preepisternum yellow to yellowish. Scutellum brownish, with 4 long setae. Laterotergite yellowish to brownish. Mediotergite brownish, bare. Wing. Length 2.8–2.9 mm. Wing hyaline. Sc ending in R 1 proximad of middle of small cell, Sc 1 missing. Apical part of Sc bearing 1–2 small setae. Small cell about 2 x as long as wide. Cu fork distinctly distal to M fork. M ratios: 1.01–1.13, 1.36–1.53. Cu ratios: 1.00– 1.15, 1.56–1.88. 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 and femora yellow, tibiae and tarsi brownish. Coxa 2 without spur. Leg ratios: bt 1:t 1 = 0.77–0.79, bt 2:t 2 = 0.69, bt 3:t 3 = 0.57–0.58. Abdomen. Tergites brownish, sternites yellow. Hypopygium. Figs. 3 View FIGURE 3 A–E, yellow. Tergal part with two pairs of combs, outer combs widely separated from each other, both with about 10 spines ( Fig. 3 View FIGURE 3 A). Tergal lateral appendage long, slender, about 7 x as long as its width, setose, with some curved, flattened, apical setae ( Fig. 3 View FIGURE 3 D). Sternal synsclerite with several setae on both sides, no sternal submedian filament ( Fig. 3 View FIGURE 3 B). Gonostylus short, about 2.5 x as long as its width, with 5–6 apical tooth, 1 dark spur in its middle part, and membranous lateral lobe about 0.5 x as long as main branch of gonostylus ( Fig. 3 View FIGURE 3 F). Aedeagus with lateral lobes, extending slightly beyond its apex ( Fig. 3 View FIGURE 3 E). Female. Wing length 2.9 –3.0 mm. Thorax and abdomen similar to those of ♂. Leg ratios: bt 1:t 1 = 0.77–0.80, bt 2:t 2 = 0.66–0.68, bt 3:t 3 = 0.53–0.56. Sc with 4 small setae. Terminalia yellow. Apical segment of cercus relatively long and narrow.

Discussion. Mycomya minutata belongs to the subgenus Mycomyopsis (as discussed for M. apoensis above). Edwards (1931 b: Fig. 5 View FIGURE 5 ) already described the male hypopygium of this small species. He stated that M. minutata ”belongs to the same group as M. fimbriata Mg. (Europe and N. India), M. unipectinata Edw. ( Ceylon) and M. plagiata Tonn. ( New Zealand, etc.)”. However, M. fimbriata ( Meigen, 1818) belongs to another subgenus ( Neomycomya , see Väisänen, 1984 a), whereas both M. minutata and M. unipectinata Edwards, 1927 clearly belong to subgenus Mycomyopsis . Mycomya minutata differs from the other species of the subgenus in the shape and setosity of the tergal lateral appendage ( Fig. 3 View FIGURE 3 D) and the gonostylus ( Fig. 3 View FIGURE 3 F), as well as in the absence of the sternal submedian filament. The tergal lateral appendage resembles those in M. ducula Väisänen (2013 c: fig. 8 C) and M. jeti Väisänen (2013 c: fig. 10 C) . The latter species differs from M. minutata in having a short sternal submedian filament ( Väisänen 2013 c: figs. 10 B, 10 D). M. ducula is similar to M. minutata in having a short gonostylus with a spur, and lacking the sternal submedian filament ( Väisänen 2013 c: figs. 8 B, 8 D). However, the setae of the tergal lateral appendage of M. ducula are in two separate groups, i.e. in the basal half and the apex ( Väisänen 2013 c: fig. 8 C), whereas in M. minutata the whole tergal lateral appendage is sparsely covered by setae ( Fig. 3 View FIGURE 3 D). The type locality of M. minutata is Fort de Kock (= Bukittinggi), which is about 920 m above the sea level, in the Sumatran Minangkabau highlands near the volcanoes of Mount Singgalah and Mount Marapi.














Mycomya minutata Edwards, 1931

Väisänen, Rauno 2014

Mycomya minutata

Edwards 1931: 266