Nepalomyia reunionensis, Ya, Igor, 2010

Ya, Igor, 2010, Discovery of Griphophanes Grootaert & Meuffels and Nepalomyia Hollis in the Afrotropical Region with a key to Afrotropical genera of Peloropeodinae (Diptera: Dolichopodidae), Zootaxa 2668, pp. 1-20 : 16-18

Nepalomyia reunionensis sp. nov.

( Figs. 24−26 )

Diagnosis. Nepalomyia reunionensis is close to N. kotrbae sp. n., differing in simple fore tarsus and in hypopygium morphology. The new species is related to the pallipes- species group ( Wang et al. 2007), differing from Oriental species in bearing posterodorsal row of 5-6 dark setae on hind tibia.

Type material. HOLOTYPE 3 [in glycerol, without maceration, in microvial mounted on pin] La Reunion: Le Grand Etang, Ufer, 27.IV.2002, leg. M. Kotrba [ ZSM]. PARATYPES: 143, 17Ƥ [in alcohol; 13, 1Ƥ dried and mounted on pin], same label [ ZSM; 13, 1Ƥ in author’s coll.].

Etymology. The species is named for the island of origin.

Description. Male: Similar to N. kotrbae sp. nov. in all respects except as noted: Head: Face under antennae about as wide as height of postpedicel, slightly narrowing towards clypeus. Antenna black; postpedicel subtriangular, slightly higher than long.

Thorax: Mesonotum weakly shining. Legs: Yellow-brown with coxae and 5th tarsomeres brown. Fore leg without strong setae and remarkable cilia; length ratio of fore tibia to tarsus (segments from first to fifth): 27/ 14/6 /6/5/5. Mid tibia with 1 anterodorsal and 1 posterodorsal seta at basal fourth, 1 anterodorsal at 2/3. Length ratio of mid tibia to tarsus (segments from first to fifth): 39/17/9 /7/5/5. Hind tibia with 2 anterodorsals, posterodorsal row of 5−6 dark setae and with simple subapical dorsal bristle. Length ratio of hind tibia to tarsus (segments from first to fifth): 47/9/14 /9/6/6. Wing: Greyish, veins brownish. Ratio of part of costa between R2+3 and R4+5 to that between R4+5 and M1+2: 13/10. Ratio of dm-cu to apical part of CuA1: 10/23.

Abdomen: Brown, cylindrical, as long as thorax, with black hairs and marginal setae; tergum 6 small, glabrous; sterna 5 and 6 weakly sclerotized. Segment 7 glabrous, reduced, with small sternum; segment 8 brown, large, rounded, setose; hypopygium brown, with yellow cercus; epandrium ovoid, longer than high, concave ventrally in distal half; foramen lateral, positioned in basal half of epandrium; hypandrium not fused with epandrium, originating from 2 basolateral arms, then simple, short, nearly parallel-sided, with cut apex; phallus thickened at base, slender, cleft at apex; epandrial lobes reduced to 3 simple epandrial setae, with 2 setae long, and small lobe at distoventral corner of epandrium bearing short seta; surstylus symmetrical, reduced, bilobate, with dorsal arm broad, with 2 dorsal setae; ventral arm of surstylus narrow, almost bare; cercus elongate-ovate, flat, with strong marginal and short sparse dorsal setae.

Measurements (mm): Body length 1.1–1.3, antenna length 0.45, wing length 1.5, wing width 0.5, hypopygium length 0.33. Female: Similar to female N. kotrbae sp. nov. Similar to male except lacking male secondary sexual characters. Each hemitergite with 4 thick setae.

Figures

FIGURE 24. Head of Nepalomyia reunionensis sp. nov.

FIGURE 25. Hypopygium of Nepalomyia reunionensis sp. nov., left lateral aspect.

FIGURE 26. Hypandrium and phallus of Nepalomyia reunionensis sp. nov., ventral aspect.