Mycomyiella kaputuensis, Gammelmo, Øivind, 2004

Gammelmo, Øivind, 2004, A review of the Afrotropical genus Mycomyiella Matile, 1973 (Diptera, Mycetophilidae, Mycomyini), with the description of six new species, Zootaxa 625, pp. 1-30 : 23-24

Mycomyiella kaputuensis new species

( Figs 19–22 )

Type material: Holotype male, TANZANIA, Tanga region, West Usambara Mountains, Mazumbai, Kaputu stream, 26.xi.1990, ZMB's Tanzania Expedition, ( ZMUN). Paratypes: as for holotype except 3 males, 27.xi.1990; 1 male 20–26.xi.1990.

Etymology: Named after the type locality, Kaputu stream in the West Usambara Mountains, Tanzania.

Diagnostic characters: The male groups with M. irwini Väisänen in having a forked gonostylus and in having the lobe of the gonocoxite reduced. It can be separated from M. irwini by tergite 9 bearing long lobes.

Description

Male (n=18). Total length 2.98–3.71, 3.45 mm.

Coloration: Head light brown to brown. Palpomeres and other mouthparts light brown to yellow. Ocellar area dark brown. Face light yellow­brown, posterior parts of head brown. Antennae yellow­brown; scape, pedicel and base of first flagellomere yellow. Antepronotum yellow. Scutum brown to dark brown with 3 yellow longitudinal bands. Anepisternum and preepisternum yellow. Scutellum light brown to brown. Laterotergite light brown to brown, mediotergite brown. Coxa yellow; femur, tibiae and tarsi light brown. Tergite 1 light brown; tergite 2 yellow with posterior, light brown band; tergite 3 brown; tergite 4 yellow with narrow brown median line; tergites 5–6 brown; tergite 7 yellow. Sternites 1–4 yellow, sternites 5–6 yellow with brown lateral patches, sternite 7 yellow­brown. Terminalia light brown to brown.

Head: Head 0.47–0.53, 0.51 mm long; 0.50–0.55, 0.51 mm wide. First flagellomere about 1.5 times as long as wide, second flagellomere as long as wide. Ocellar area 0.10– 0.13, 0.11 mm wide; placed below upper margin of compound eye. Clypeus 0.10–0.13, 0.12 mm long; with lateral and apical setae. Some setae in front of ocellar area. Posterolateral portion of frons densely setose, setae reaching just below ocellar area. Face bare. Mouthparts elongated. Palpomere 4 with 2–5 setae subbasally, palpomere 3 with several setae in basal two­thirds. Palpomere ratios (2–5) as: 1.00: 3.25: 3.00: 5.25.

Thorax: Total length 0.75–0.85, 0.80 mm. Scutum 0.64–0.72, 0.68 mm long; scutellum 0.13–0.18, 0.17 mm long.

Legs: Leg measurements and ratios as in Tables 4 & 5.

Wing: Wing 3.00–3.32, 3.22 mm long; 1.09–1.13, 1.12 mm wide. Sc1 lacking. Sc ending in R1 slightly distal to middle of small cell. Sc with 7–12, 9 macrotrichia apically. R4/ Rs­cell 1.0–2.0 times as long as wide. CuA fork slightly distal to M fork. Wing measurements are given in Table 6 .

Abdomen: Length of abdomen 2.56–2.72, 2.68 mm; tergite 5 0.63–0.82, 0.73 mm wide.

Male terminalia ( Figs 19–22 ). Tergite 8 wide; with 5–7 long posterolateral setae. Tergite 9 short, setose; lobe reduced. Gonocoxite bare; lobe reduced; lateral prolongation small, rounded, with few setae. Gonostylus forked in apical two­thirds, with few setae, occasionally bare. Aedeagus of medium size, covered with short setae, with stronger setae subapically. Sternite 8 long, bluntly pointed apically, densely setose in apical half.

Female: Unknown.

Distribution: Known from the type locality in the West Usambara Mountains in North­East Tanzania only.

Figures

FIGURES 19 – 22. Mycomyiella kaputuensis new species. Male terminalia: 19 ventral; 20 dorsal; 21 sternite 8; 22 gonostylus. FIGURES 23 – 26. Mycomyiella tannerorum new species. Male terminalia: 23 ventral; 24 dorsal; 25 sternite 8; 26 gonostylus.