Mycomya ratufa , 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: 305-307

publication ID

http://dx.doi.org/10.11646/zootaxa.3666.3.1

publication LSID

lsid:zoobank.org:pub:5A2C3D51-FB3E-485F-A629-07080EB385D3

persistent identifier

http://treatment.plazi.org/id/C44B4E09-BF6C-FF86-A7BE-F9CFFE9FF8C7

treatment provided by

Plazi

scientific name

Mycomya ratufa
status

sp. n.

Mycomya ratufa  sp. n.

Figs. 2View FIGURE 2 A –F

Material studied. Holotype. 3. MYANMAR, N.E. Burma, Kambaiti, 2000 m, 4.VI. 1934 Malaise (in MZH). Paratypes (3 only). Same locality, 3 3 and 1 Ƥ (in MZH); same locality, 2000 m, 11.V. 1934, Malaise, 2 3 (in MZH); same locality, VI. 1934, 1 3 (in MZH).

Description. 3. Head. Palp, other mouthparts and face yellowish, posterior parts of head yellowish to brownish, ocellar prominence brown. Antenna brownish, scape, pedicel and base of 1 st flagellomere yellow. Length of 1 st flagellomere about 3 x, 2 nd flagellomere 1.5 x, its width. Thorax. Pronotum yellow, with 4 long setae. Scutum yellow with yellowish to light brownish with indistinct fused longitudinal stripes. Anepisternum and preepisternum yellow to yellowish. Scutellum yellowish, with 4 long setae. Laterotergite yellow to yellowish. Mediotergite yellowish, bare. Wing. Length 4.1–4.5 mm. Wing hyaline. Sc ending in C distad of middle of small cell, Sc 2 ending in R 1 near middle of small cell. Apical part of Sc bearing 10–14 small setae. Small cell about 2 x as long as wide. Cu fork distal, below or slightly proximal to M fork. M ratios: 0.42–0.45, 0.50–0.56. Cu ratios: 0.74– 0.86, 0.90–1.33. Small setae: M petiole: 0; M 1: +; M 2: +; Cu petiole: +; Cu 1: +; Cu 2: +. Halter yellowish. Legs. Coxae and femora yellow, tibiae and tarsi brownish to brown. Coxa 2 with short curved spur measuring about 1 / 2 of its length; apex of spur with 1 curved tooth. Leg ratios: bt 1:t 1 = 1.09–1.22, bt 2:t 2 = 0.69–0.71, bt 3:t 3 = 0.60– 0.64. Abdomen. Tergites 1–5 yellow, with wide brown posterior margins and brown dorsomedial stripe, 6–7 brown. Sternites yellow. Hypopygium. Figs. 2View FIGURE 2 A –F, yellowish. Tergal fork wide, about 0.8 x as long as wide, Ushaped, with very short apical setae, and small thin lateral lobes about 0.5 x as long as tergal fork. Sternal lateral appendage rounded, with long flattened setae ( Fig. 2View FIGURE 2 D). Gonostylus with two branches, one wide with two dark apical-subapical teeth and another long, slender and curved ( Fig. 2View FIGURE 2 E). Aedeagus with two spurs about 3 x as long as narrowest width of aedeagus in lateral view ( Fig. 2View FIGURE 2 F). Female. Wing length 5.2 mm. Thorax as in 3. Abdominal tergites 1–6 yellow, with wide brown posterior margins and brown dorsomedial stripe, 7 brown, sternites yellow. Leg ratios: bt 1:t 1 = 1.17, bt 2:t 2 = 0.73, bt 3:t 3 = 0.59. Terminalia yellow.

Discussion. The diagnostic characters of M. ratufa  include the wide, U-shaped tergal fork (about 0.8 x as long as its apical width; Fig. 2View FIGURE 2 A) and its lateral membraneous lobes being only about half of the length of the fork ( Figs. 2View FIGURE 2 A, 2 C). The membranous, brush-like tergal lateral structure of M. ratufa  (also visible lateral of tergal lobes in Figs. 2View FIGURE 2 A, 2 C) is smaller, only about 0.5 x the length of the tergal fork, whereas in M. marmota  ( Fig. 1View FIGURE 1 A) and M. wah  ( Fig. 3View FIGURE 3 C) the lateral structure is at least as long as the tergal fork. The narrower branch of the gonostylus of M. ratufa  is strongly curved and about as long as the thicker branch.

Etymology. The species name is a noun in apposition and refers to the Oriental giant squirrel (genus Ratufa  ).

Mycomya wah  sp. n. Figs. 3View FIGURE 3 A –E

Material studied. Holotype. Male. E. NEPAL, Topke Gola (3700 m) 27 o 38 'N, 87 o 35 'E --- Thurukpa (2600 m) 27 ° 36 'N, 87 ° 36 'E. July 9, 1972 Pemba Norbu Kyushu Univ. Col. (in KUC). Paratype. Thudam, 27 ° 45 'N, 87 ° 32 'E, Malaise trap, 8–9.VII. 1972, Kyushu Univ. Col. 1 3 (in MZH).

Description. 3. Head. Palp and other mouthparts yellowish to brownish, face yellowish, posterior parts of head brownish. (Antennae of holotype and paratype broken). Thorax. Pronotum yellow, with 4 long setae. Scutum yellowish with 3 indistinct longitudinal stripes, anterolateral corners yellow. Anepisternum and preepisternum brownish. Scutellum yellowish, with 4 long setae. Laterotergite brownish. Mediotergite brownish, bare. Wing. Length 5.5 mm. Wing hyaline, apex very weakly infuscate. Sc ending in C distad of middle of small cell, Sc 2 ending in R 1 distad of middle of small cell. Apical part of Sc bearing 12-13 small setae. Small cell about 2 x as long as wide. Cu fork below or slightly proximal to M fork. M ratios: 0.48–0.56, 0.59–0.74. Cu ratios: 0.73–0.86, 1.14– 1.36. Small setae: M petiole: 0; M 1: +; M 2: +; Cu petiole: +; Cu 1: +; Cu 2: +. Halter pale yellowish, apex brownish. Legs. Coxae yellow, coxae 2 and 3 with brownish spot on outer side, femora yellow, tibiae and tarsi brownish to brown. Coxa 2 with short, curved spur shorter than half of coxa 2; apex of spur with 1 tooth. Leg ratios: bt 1:t 1 =?, bt 2:t 2 = 0.71, bt 3:t 3 = 0.60. Abdomen. Tergites 1–5 yellowish with brown dorsal line and wide brown posterior margins, 6–7 brown. Sternites 1–5 yellow, 6–7 brownish. Hypopygium. Figs. 3View FIGURE 3 A –E, yellow. Tergal fork narrow, apically narrowed than its length, V-shaped, with very short apical setae, and wide thin lateral lobes ( Fig. 3View FIGURE 3 A). Sternal lateral appendage relatively long, with long flattened setae ( Fig. 3View FIGURE 3 B). Gonostylus with two branches, one with indistinct subapical tooth, and another slender and curved ( Fig. 3View FIGURE 3 D). Aedeagus with two relatively short, bilobed spurs, each about 2 x as long as narrowest width of aedeagus in lateral view ( Fig. 3View FIGURE 3 E).

Discussion. The diagnostic characters of M. wah  include a narrow, v-shaped tergal fork (about 1.1 x as long as its apical width), the lateral lobes of which are about as long as wide ( Fig. 3View FIGURE 3 A, 3 C), and the narrower branch of the gonostylus is slightly shorter than the thicker branch, which is gradually tapering towards its apex without a wider middle part ( Fig. 3View FIGURE 3 D). The tergal fork of the closely related M. marmota  is a bit narrower (its length about 1.3 x its apical width; Fig. 1View FIGURE 1 A) and the slender branch of its gonostylus is much shorter than the broader one, which is widest at the midlength ( Fig. 1View FIGURE 1 C).

Etymology. The species name is a noun in apposition and refers to the red panda, which is called ‘wah’ in Nepalese language.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Mycetophilidae

Genus

Mycomya