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

https://dx.doi.org/10.11646/zootaxa.3815.4.4

publication LSID

lsid:zoobank.org:pub:172C594B-7321-4F1C-B8CC-158A195A7D73

DOI

https://doi.org/10.5281/zenodo.6134635

persistent identifier

https://treatment.plazi.org/id/03998794-FFF1-F708-FF40-675AFAF2F8C7

treatment provided by

Plazi

scientific name

Mycomya minutata Edwards, 1931
status

 

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.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Mycetophilidae

Genus

Mycomya

Loc

Mycomya minutata Edwards, 1931

Väisänen, Rauno 2014
2014
Loc

Mycomya minutata

Edwards 1931: 266
1931