Mycomya pitta , 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: 148-152

publication ID

http://dx.doi.org/10.11646/zootaxa.3737.2.3

publication LSID

lsid:zoobank.org:pub:358CB400-2CF2-4AF1-8DC6-9F8C57721C33

persistent identifier

http://treatment.plazi.org/id/600087D2-FFB2-482B-5086-FCD5FEDF1CD4

treatment provided by

Plazi

scientific name

Mycomya pitta
status

sp. n.

Mycomya pitta  sp. n.

Figs. 13View FIGURE 13 A –E

Material studied. Holotype. ♂. MYANMAR, N.E. Burma, Kambaiti, 2000 m, 4.VI. 1934, Malaise (in MZH). Paratypes. Same data as holotype, 2 ♂♂ (in MZH); same data, but 31.III. 1934, 1♂ (in MZH); same data, but 9.VI. 1934, 1 ♂ (in MZH); same data, but 12–17. VI. 1934, 1 ♂ (in MZH).

Description. ♂. Head. Palp brownish, other mouthparts and face yellow, posterior parts of head brownish to brown. Antenna brownish, scape, pedicel and base of 1 st flagellomere yellow. Length of 1 st flagellomere about 3.5 x, 2 nd flagellomere 2 x, its width. Thorax. Pronotum yellow, with 3 long setae. Scutum yellow with 3 indistinct brownish longitudinal stripes. Anepisternum yellow. Preepisternum yellow, ventral half slightly darker. Scutellum yellowish, with 4 long setae. Laterotergite yellowish. Mediotergite light brownish, bare. Wing. Length 3.2 –4.0 mm. Wing hyaline. Sc ending in R 1 near middle of small cell, Sc 1 missing. Apical part of Sc bearing 0–1 small setae. Small cell 1–1.5 x as long as wide. Cu fork distal to M fork. M ratios: 0.93–0.97, 1.11–1.23. Cu ratios: 1.00– 1.02, 1.50–1.57. Small setae: M petiole: 0; M 1: 0; M 2: 0; Cu petiole: 0; Cu 1: 0; Cu 2: 0. Halter yellowish. Legs. Coxae and femora yellow, tibiae and tarsi brownish to brown. Coxa 2 without spur. Leg ratios: bt 1:t 1 = 0.78–0.84, bt 2:t 2 = 0.66, bt 3:t 3 = 0.62. Abdomen. Tergites brownish, 1–5 sometimes with slightly darker posterior margins, 6–7 brownish to brown, sternites paler than tergites. Hypopygium. Figs. 13View FIGURE 13 A –E: yellowish. Tergal part with two pairs of combs. Outer tergal combs with about 9 spines, base of outer combs relatively deeply bilobed. Inner tergal combs with about 8–9 slightly flattened spines. Tergal lateral appendage more than 4 x as long as wide, its setose basal part at least 3 x as wide as its long, narrow apical part bearing some slightly flattened, curved apical setae ( Fig. 13View FIGURE 13 C). Sternal submedian filament short, slightly curved, not reaching apex of sternal synsclerite. Gonostylus at least 4 x as long as wide, apical part much wider, with 3 subapical teeth, 1 strong seta, basal part of gonostylus with a very long, strong basal spur and with small lateral membranous lobe about 1 / 3 of length of main branch of gonotylus ( Fig. 13View FIGURE 13 D). Spur with 2 small dark apical teeth and 2–3 very long setae, about as long as the spur. Aedeagus with two rounded lobes.

Discussion. The male hypopygium of M. pitta  resembles that of M. naja  sp. n, but differs from it e.g. in the almost straight shape of the tergal lateral appendage ( Fig. 13View FIGURE 13 C), and in having a very short sternal submedian filament ( Fig. 13View FIGURE 13 B). The structure of the gonostylus of M. pitta  is diagnostic in having a very small membranous lateral lobe, and a very strong spur with apical teeth and a few very long apical setae ( Fig. 13View FIGURE 13 D).

Etymology. The species name is a noun in apposition and refers to the elusive forest birds of the passerine genus Pitta  Viellot.

Mycomya sanar  sp. n. Figs. 14View FIGURE 14 A –F

Material studied. Holotype. ♂. E. NEPAL, Gupa Pokali (2900 m) 27 ° 17 'N, 87 ° 30 'E – Chouki (2700 m) 27 ° 12 'N, 87 ° 28 'E (holotype collected on the way between the two localities). July 16, 1972 J. Emoto leg. Kyushu Univ. Col. (in KUC). Paratypes (only ♂♂). Same data as holotype, 8 ♂♂, 1 ♀ (in KUC).

Description. ♂. Head. Palp and other mouthparts brownish, face yellowish, posterior parts of head brown. Antenna brownish, scape, pedicel and base of 1 st flagellomere yellow. Length of 1 st flagellomere 4– 5 x, 2 nd flagellomere 3 x, its width. Thorax. Pronotum yellow, with 2–3 long setae. Scutum yellowish with fused brown longitudinal stripes, anterolateral corners yellow. Anepisternum and preepisternum yellow. Scutellum brownish, with 4 long setae. Laterotergite brownish to brown. Mediotergite brownish, bare. Wing. Length 4.5–4.9 mm. Wing hyaline. Sc ending in R 1 near or distad of middle of small cell, Sc 1 missing or very short. Apical part of Sc bearing 0–3 small setae. Small cell 1.5– 2 x as long as wide. Cu fork distinctly distal to M fork. M ratios: 0.83–0.97, 1.09– 1.27. Cu ratios: 0.85–1.06, 1.40–189. Small setae: M petiole: 0; M 1: 0; M 2: 0; Cu petiole: 0; Cu 1: 0; Cu 2: 0. Halter yellowish. Legs. Coxae yellow to yellowish, femora yellow, tibiae and tarsi brownish to brown. Coxa 2 without spur. Leg ratios: bt 1:t 1 = 0.82–0.86, bt 2:t 2 = 0.67–0.68, bt 3:t 3 = 0.55–0.56. Abdomen. Brownish to brown. Hypopygium. Figs. 14View FIGURE 14 A –F: yellowish. Tergal part with two pairs of combs. Outer combs widely separated from each other, both with 7–8 spines. Inner tergal combs with broad darker and lighter spines. Tergal lateral appendage long, slender, about 7 x as long as wide and strongly curved, with one group of basal and another group of long, flattened, curved apical setae ( Fig. 14View FIGURE 14 D). Sternal submedian filament missing. Gonostylus about 4 x as long as wide, apically wider, with 1 strong dark spine in its middle part, 3 subapical teeth and small membranous lateral lobe, about 1 / 3 of length of main branch of gonostylus ( Fig 4View FIGURE 4 E). Aedeagus wide, setose with two narrow, dark lobes ( Fig. 14View FIGURE 14 F). Female. Wing length 4.8 mm. Thorax yellow with brown median stripe on scutum and brown posterior part of mediotergite. Abdomen brown. Leg ratios: bt 1:t 1 = 0.81, bt 2:t 2 = 0.66, bt 3:t 3 = 0.56. Terminalia yellow.

Discussion. The diagnostic characters of the male hypoppygium of M. sanar  include the long, narrow and strongly curved tergal lateral appendage having setae only on its basal and apical part ( Fig. 14View FIGURE 14 D), the lack of sternal submedian filament ( Fig. 14View FIGURE 14 B), and the short, wide gonostylus with a small membranous lateral lobe ( Fig. 14View FIGURE 14 E). Etymology. The species name is a noun in apposition and refers to the name of the Himalayan black bear in the Nepali language.

Mycomya unipectinata Edwards, 1927  Figs. 15View FIGURE 15 A –E

Mycomya unipectinata Edwards, 1927  . Edwards 1927: 118.

Material studied. Holotype. ♂. SRI LANKA, N. Eliya Ceylon 9 -I- 22. Ceylon G. M. Henry B. M. 1925. 444. (in NHM; hypopygium was originally mounted and it is now stored in a glycerine in a microvial).

Description. ♂. Head. Palp and other mouthparts light brownish, face yellowish, posterior parts of head brown. Antenna brownish, scape, pedicel and base of 1 st flagellomere yellow. Length of 1 st flagellomere about 4 x, 2 nd flagellomere 2.5 x, its width. Thorax. Pronotum yellow, with 3–4 long setae. Scutum brownish with 3 brownish, fused, longitudinal stripes, anterolateral corners yellow. Anepisternum and preepisternum brownish. Scutellum brownish, with 4 long setae. Laterotergite brownish. Mediotergite brownish, bare. Wing. Length 4.0 mm. Wing hyaline. Sc ending in R 1 slightly proximad of middle of small cell, Sc 1 missing. Apical part of Sc bearing 7 macrotrichia. Small cell about twice as long as wide. Cu fork distal to M fork. M ratios: 1.07, 1.44. Cu ratios: 0.93, 1.47. Macrotrichia: M petiole: 0; M 1: 0; M 2: 0; Cu petiole: 0; Cu 1: 0; Cu 2: 0. Halter yellowish, apex brownish. Legs. Coxae and femora yellow, tibiae and tarsi brownish. Coxa 2 without spur. Leg ratios: bt 1:t 1 = 0.79, bt 2:t 2 = 0.68, bt 3:t 3 =?. Abdomen. Brownish. Hypopygium. Figs. 15View FIGURE 15 A –E: yellow. Tergal part with two pairs of combs. Outer combs indistinct and rudimentary, both with only 3–4 spines, inner combs widely separated from each other, both with about 12 spines. Tergal lateral appendage with broad, setose basal part about 1.5 x as wide as narrow subapical part; a narrow apical part with few long flattened apical setae ( Fig. 15View FIGURE 15 C). Gonostylus narrow, about 7 x as long as wide, with 3 teeth, 1 apical seta and membranous lateral lobe about 2 / 3 of length of main branch of gonostylus ( Fig. 15View FIGURE 15 D). Aedeagus with two narrow lateral lobes.

Discussion. Hypopygium of M. unipectinata  differs from the other species of the subgenus Mycomyopsis  in having only one complete pair of tergal combs as indicated by its Latin name. The other pair of combs is rudimentary and consists only of few spines ( Fig. 15View FIGURE 15 A). The shape of the tergal lateral appendage is also diagnostic ( Fig. 15View FIGURE 15 C). The holotype was collected at the hill station of Nuwara Eliya, surrounded by tea-growing country, at the altitude of about 1900 m in January.

Acknowledgements

I wish to thank the following persons, who placed their material or information at my disposal: O. Biström (MZH, Helsinki), B. Pitkin (NHM, London), J. Poirier (CNC, Ottawa), T. Saigusa (KUC, Ropponmatsu, Japan), H. Shima (KUC), K. K. Tiwari (Calcutta), and J. R. Vockeroth (CNC). I am very grateful to K. Heliövaara (University of Helsinki) and P. Vilkamaa (MZH) for technical assistance. P. H. Kerr (Sacramento) and an anonymous referee gave valuable comments on the manuscript. My grateful regards are also due to P. Chandler (Melksham, UK) for his comment on the nomenclatural problem of the generic name Lycomya  , which was later noticed by A. Ö. Koçak and M. Kemal (Ankara).

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Mycetophilidae

Genus

Mycomya