Amblypsilopus leonidi, Grichanov, 2021

Grichanov, Igor Ya., 2021, Eleven new species of Amblypsilopus Bigot (Diptera: Dolichopodidae: Sciapodinae) and a key to the species of Madagascar and adjacent islands, European Journal of Taxonomy 755 (1), pp. 47-87 : 78-80

Amblypsilopus leonidi sp. nov.

urn:lsid:zoobank.org:act:7436C062-7C49-4E10-BBB7-D9C511C8D7BD

Fig. 11

Diagnosis

Amblypsilopus leonidi sp. nov. is close to A. andasibensis sp. nov. and A. olgae sp. nov. in habitus. The last two species differ from A. leonidi sp. nov. in the fore tarsomeres 4–5 white or tarsomere 5 entirely white, and the male cercus with a strongly projected median lobe. The fore tarsomeres 4–5 are entirely black in A. leonidi sp. nov.; the cercus has median and ventral lobes subequal in length.

Etymology

The species name is dedicated to Leonid Grichanov, one of my grandsons (St. Petersburg, Russia).

Material examined

Holotype MADAGASCAR • ♂; Andasibe, Analamazaotra Forest ; 18°46ʹ S, 48°24ʹ E; 950 m a.s.l.; 31 Oct.–4 Nov. 2007; A. Freidberg leg.; SMNHTAU.

Paratypes MADAGASCAR • 6 ♂♂; same collection data as for holotype; SMNHTAU .

Description

Male ( Fig. 11A )

MEASUREMENTS. Body length 6.3 mm; antenna length 1.3 mm; wing length 5.2 mm; wing width 1.2 mm.

HEAD ( Fig. 11B ). Frons black, white pollinose; strong short anterior vertical and long postvertical bristles; upper postocular setae black, short; lateral postocular setae white, uniserial; ventral postcranium covered with irregular white hairs; face densely silvery-white pollinose, narrow, 4.5 times as wide under antennae, 9 times as high as wide at clypeus, at clypeus as wide as postpedicel; clypeus small, slightly bulging; antenna ( Fig. 11C ) with scape and pedicel dirty yellow, postpedicel orange on basal half and brown distally, 1.7 times as long as height of head; pedicel with short bristles, with one long dorsal bristle; postpedicel ovate, 1.3 times as long as high, with short hairs; arista-like stylus dorsal, microscopically haired; length (mm) of scape, pedicel, postpedicel, stylus, 0.08/0.08/0.11/1.04; proboscis orange; palpus blackish, with white and brown hairs.

THORAX. Mesonotum orange, with brown, shining greenish blue, medial stripe expanding posteriorly; scutellum metallic blue; pleura yellow, weakly pollinose; 6 strong dorsocentral bristles gradually decreasing in size anteriorly with strongest posterior pair; acrostichals short, biserial; scutellum with 2 strong bristles and 2 hairs laterally.

LEGS. Mostly yellow; coxae yellow; tarsi brown from tip of basitarsus; segments 4 and 5 of fore tarsus black; fore and mid coxae with light and dark hairs and 2–3 black subapical setae; hind coxa with 1 black seta at middle; femora without strong or long setae; fore tibia without conspicuous setae; fore basitarsus thin and long, with 6 short ventral setae, two times as long as width of segment; segments 4–5 flattened dorsoventrally, slightly widened, with black flattened setae laterally, longer than tarsomere width ( Fig. 11D ); mid tibia with one short anterodorsal and two short posterodorsals, without conspicuous ventral setae; mid and hind tarsi simple, cylindrical; hind tibia with several short dorsal and ventral setae; femur, tibia and tarsomere (from first to fifth) length ratio (mm): fore leg: 1.43/2.08/5.21/0.55/0.6/0.26/0.2, mid leg: 1.77/4.13/3.27/0.63/0.41/0.22/0.17, hind leg: 2.83/4.68/2.06/0.74/0.43/0.22/0.16.

WING ( Fig. 11E ). Widened distally, almost hyaline, veins brown; R 4+5 gently curved to M 1 in apical third; M 1+2 straight in basal half, slightly convex anteriad in middle part; M 1 with strong elbow, forming right angle with M 1+2; ratio of parts of costa between R 2+3 and R 4+5 to those between R 4+5 and M 1, 6/1; crossvein dm-m straight; ratio of crossvein dm-m to apical part of M 1+2 (fork-handle) to apical part of M 4, 0.43/1.24/0.31; anal vein and lobe reduced; anal angle absent; lower calypter brownish, with fine brown cilia; halter yellow with brown knob.

ABDOMEN. Thin and long, mostly orange-yellow, brown along distal margin of tergite 2 and along dorsal side of tergites 3–6, with short black hairs and marginal setae; pregenital segments combined nearly three times as long as mesonotum; hypopygium ( Fig. 11F ) brown, with brown to black appendages; cercus ( Fig. 11G ) brown, trilobed; dorsal arm short, half as long as epandrium, thick at base, narrow distally, densely covered with numerous setulae at base, with long dark setae along narrow part; median lobe of cercus as long as epandrium, thin, with triangular subapical dorsal process and one long flat falcate seta; ventral arm of cercus as long as epandrium, thicker than median lobe, with one long flat subapical seta directed distally, 3 short thick apicoventral setae directed basally, one long thick subapical L-shaped process; arms of cerci fused at base; surstylus bilobed, with sclerotized arms; dorsal arm of surstylus thin, with 2 pointed apical processes and 2 subapical processes ending with long thick seta each; ventral arm of surstylus broad, curved towards median axis of epandrium, bearing 3 long strong bristles at apex; epandrial lobe projected, sclerotized, with 1 apical and 2 ventral short setae; 1 epandrial seta at base of epandrial lobe.

Female

Unknown.

Figures

Fig. 11. Amblypsilopus leonidi sp. nov.A–E. Holotype, ♂ (SMNHTAU). F–G. Paratype, ♂ (SMNHTAU). A. Habitus. B. Head. C. Antenna. D. Fore tarsomeres 4–5. E. Wing. F. Hypopygium, left lateral view, reflected light. G. Cercal lobes, lateral view, transmitted light.