Udzungwomyia maseru, Grichanov, 2024

Grichanov, I. Ya., 2024, Four new species of the genus Udzungwomyia Grichanov, 2018 from Lesotho and South Africa (Diptera: Dolichopodidae), Russian Entomological Journal 33 (1), pp. 116-123 : 119-121

Udzungwomyia maseru sp.n.

Figs 15–22 .

MATERIAL. Holotype ♂, Lesotho, Roma Mission, Maseru District, Basutoland, 4 − 13.I.1963, B. & P. Stuckenberg / Upper Cave , sandstone level, 6000 ft. ( NMSA). Paratype. 1♂, same data as for holotype ( NMSA; male terminalia dissected and stored in glycerin in microvial pinned with the specimen) .

DESCRIPTION. Male ( Fig. 15 ). Length (mm): body 2.0, wing 2.2/0.7, antenna 0.7. Head ( Fig. 16 ). Frons black, grey pollinose; face black, whitish pollinose, narrow, narrowest in middle; eyes nearly contiguous in middle of face; clypeus silvery white pollinose, convex, slightly wider than high (4/3); facial suture distinctly separating clypeus; antenna ( Fig. 17 ) black; postpedicel small, rounded, slightly higher than long (8/6), with long hairs; arista-like stylus apical, simple, with short hairs apically; length ratio of scape to pedicel to postpedicel to arista-like stylus (stylomeres 1 and 2), 0.04/0.05/0.06/0.03/0.51; proboscis black; palpus small, black, with 1 black seta and white hairs; lower postocular setae white; about 5 upper postoculars short, black. Thorax black, with mostly black setae; mesonotum grey-brownish pollinose; pleura whitish pollinose; propleuron with 3 white setae in lower part; 5 pairs of strong dorsocentral setae slightly decreasing in length anteriorly; acrostichals absent; scutellum with 2 long strong setae and 2 minute lateral hairs, dorsally bare. Legs black, with mainly black setae; coxae with white hairs and setae; hind coxa with one outer seta; fore leg simple, devoid of strong setae; mid femur with single anterior preapical seta; mid tibia with pair of anterodorsal and posterodorsal setae at base and 3 short apical setae; mid tarsus simple; hind femur with single short anterior preapical seta; hind tibia slightly thickened at apex, with 1 anterodorsal seta at base, dorsal row of 6 − 7 setae in middle third, 2 short anterior apical black setae; comb of short brownish ventral apical setae; hind basitarsus ( Fig. 18 ) thickened in basal half, with small triangular basoventral tooth; tibia and tarsomere (from first to fifth) length (mm): fore leg: 0.58/0.27/0.14/0.08/0.06/0.06, mid leg: 0.76/0.43/0.19/0.09/0.07/0.08, hind leg: 0.91/0.21/0.26/0.14/ 0.07/0.08. Wing ( Fig. 19 ) greyish, hyaline; basal portion of costa almost straight, bearing simple setae; R 2+3 and R 4+5 gradually diverging to wing apex; R 4+5 and M 1+2 almost parallel in apical part; ratio of part of costa between R 2+3 and R 4+5 to this between R 4+5 and M 1+2 to dm-m to distal part of M 4 (in mm), 0.19/0.15/0.14/0.25; basal section of M 1+2 shorter than distal section (13/20); basal section of M 4 slightly thickened in middle; lower calypter brown, with brown cilia; halter brownish. Abdomen black, grey pollinose, with black hairs and short black marginal setae; terga 2–4 laterally whitish pollinose; sterna 2–4 well developed; sternum 4 largest, subquadrate, glabrous; sterna 5–6 reduced, membranous; tergum 5 narrow; tergum 6 small, located between tergum 5 and sternum 4, hemispherical, without distal emargination, with ventral lobes covered with short hairs; tergum 7 semicircular, very narrow, symmetrically lying along posterior margin of tergum 5, bare; segment 8 large, rounded, covered with short white setae; hypopygium ( Fig. 20 ) partly concealed, black; cercus black; epandrium shining, globular, basally asymmetrical, as long as high (lateral aspect), with symmetrical appendages; foramen positioned left laterally; hypandrium ( Fig. 21 ) midventral, trilobate, with short medial lobe bearing 4 asymmetrical spines and 1 tooth, with 2 long thin lateral lobes; phallus simple, short and thin distally; epandrial lobe broad at base, thin at apex, thickened at extreme apex, bearing few short apical setae; surstylus ( Fig. 21 ) short and broad, with fused arms, with short setae and hook-like appendix; cercus ( Fig. 22 ) small, rounded-triangular, with finger-like apex, covered with short white hairs, bearing several moderately long straight setae; cerci separated, not fused.

Female. Unknown.

ETYMOLOGY. The species is named after the Maseru District of Lesotho, where the type material was collected .

DISTRIBUTION. Lesotho.

DIAGNOSIS. The new species is similar in habitus to U. lundeans sp.n., strongly differing in black palpus, almost contiguous eyes in middle of face, straight posterior wing margin and shape of male hind basitarsus. U. lundeans sp.n. male have silvery white palpus, distinctly separated eyes, distinct bulge immediately before wing vein M 4 and shape of male hind basitarsus.

Figures

Figs 15–22. Udzungwomyia maseru, sp.n., male: 15 — habitus; 16 — head; 17 — antenna; 18 — hind tarsus, anterior view; 19 — wing; 20 — hypopygium, right lateral view; 21 — hypopygium, ventral view; 22 — hypopygium, dorsal view. Рис. 15–22. Udzungwomyia maseru, sp.n., самец: 15 — внешний вид; 16 — голова; 17 — усик; 18 — ЗаднЯЯ лапка, вид спереди; 19 — крыло; 20 — гипопигий, вид справа сбоку; 21 — гипопигий, вид сниЗу; 22 — гипопигий, вид сверху.