Aphasmaphleps bandia, Grichanov, 2010

Grichanov, Igor Ya., 2010, Aphasmaphleps, a new genus of long-legged flies from Senegal, with a key to the genera of Afrotropical Diaphorinae (Diptera: Dolichopodidae), African Invertebrates 51 (2), pp. 405-405 : 407-409

Aphasmaphleps bandia sp. n.

Figs 1−7

Etymology: The species is named after the type locality.

Description:

Male.

Head: Frons broad, dark bluish green with weak grey pruinosity; 2 pairs of strong postverticals, one pair of strong vertical and one pair of strong ocellar setae present; face present as narrow silvery white triangle beneath antennae; eyes (shrunken) joined across lower face with anteroventral facets enlarged; antenna mainly brown, positioned at middle of head; scape mostly pale brownish except dorsal surface, slightly swollen; pedicel with circlet of short setae, with one longish dorsal seta; postpedicel pale at base, subtriangular, flattened laterally, with long dorsoapical arista-like stylus; length ratios of scape to pedicel to postpedicel to stylus (1 st and 2 nd stylomeres), 7:4:7:10:75; postcranium shining black; postocular setae white except few upper setae, slightly flattened, uniserial; palpus and proboscis small; palpus black with short black apical seta.

Thorax: Mesonotum and pleura entirely dark metallic bluish green with little pruinosity; setae black; acrostichals in two irregular rows; 5 pairs of dorsocentrals present of approximately equal length except 4 th pair shortened, with posteriormost pair slightly offset laterally; upper part of proepisternum with 1 weak white seta; lower part of proepisternum with pale seta just above coxa, subtended dorsally by shorter seta; one pair of scutellar setae strong, lateral scutellars absent.

Legs: All coxae and remainder of legs yellow, with only mid and hind coxae brown at base and distalmost tarsomeres of mid and hind legs brown; coxae with pale yellow setae; fore coxa with 3 yellow distolateral setae; mid coxa with pale anterior setae; hind coxa with single brown lateral seta at basal quarter; femora devoid of strong setae; claws and pulvilli on mid and hind tarsi short; fore tibia with only 2 short dorsoapical setae; fore tarsomeres slightly thickened, with pale ventral pad of short dense hairs; 5 th tarsomere with slightly enlarged pulvilli and with claws reduced to simple setae; mid femur with 3 fine ventral erect cilia at base, half as long as femur diameter; mid tibia with strong anterodorsal seta at basal 1/4, and 3 or 4 apical setae; mid basitarsus with anterior and ventral rows of stiff hairs, which longer than segment diameter; 2 nd segment shortened; hind femur with fine posteroventral subapical seta, with somewhat elongated dorsal setulae; hind tibia with 2 short dorsal and 3 or 4 short apical setae. Length ratios of fore femur to tibia to tarsus (segments from first to fifth), 45:42:15:6:6:5:5; same ratios for mid leg, 45:55:30:5:10:7:15; same ratios for hind leg, 50:63:19:19:12:7:6.

Wing: Costal vein reaching half distance between R 4+5 and M 1+2; R 4+5 ending not far from wing apex; vein M ending at wing apex; distal parts of R 4+5 and M 1+2 slightly diverging and slightly convex anteriorly, parallel at apex; M between crossvein dm–cu and wing apex very weak, foldlike; dm–cu faint; anal vein fold-like; ratio of dm–cu to distal part of CuA 1, 1:16; lower calypter yellow with pale setae (mostly broken in unique specimen); halter yellow.

Abdomen: Dull metallic with black vestiture; terga 1 and 2 dull green with copper reflection; remainder terga violet-black; postabdomen ( Fig. 7 ); sterna 5 and 6 weak; sternum 5 concave; sternum 6 reduced; tergum and sternum 7 greatly reduced; male sternum 8 ovate, with 2 strong diverging bristles which project posteriad, and covering left lateral hypopygial foramen; epandrium black with brown surstylus and cercus, circular with thin phallus following curvature of epandrium; hypandrium forming hood over phallus; epandrial lobe small, with 2 strong apical setae and 1 short seta at base; surstylus digitiform, with broader ventral arm and narrow dorsal arm, each with 3 or 4 dorsal setae decreasing in length distad; postgonite swollen at base, with 2 long narrow hooks; cercus short rounded, with strong setae.

Measurements (mm): Body length without antennae 1.6, antenna 1.3, wing length 1.6, wing width 0.5.

Female. Unknown.

Holotype: ♂ SENEGAL: Bandia , 16.vi.1980, B. Sigwalt leg., Piège de Malaise ( MNHN).

Figures

Figs 1−3. A. bandia sp. n.: (1) habitus, (2) wing, (3) head. Scale bars: 0.5 mm (Fig. 1), 0.2 mm (Figs 2, 3).

Figs 4–7. Details of A. bandia sp. n.: (4–6) Tarsi: (4) fore tarsus, (5) mid tarsus laterally, (6) mid tarsus dorsolaterally; (7) Hypopygium, left lateral aspect.Abbreviations:cer – cercus, ep – epandrium, epl – epandrial lobe, hyp – hypandrium, ph – phallus, pgt – postgonite, dsur, vsur – surstylus (dorsal and ventral lobes). Scale bars: 0.2 mm (Figs 4–6), 0.3 mm (Fig. 7).