Tenuopus kylei Grichanov, 2018

Grichanov, I. Ya., 2018, A new subfamily of Dolichopodidae (Diptera) for Tenuopus Curran, 1924 with description of new species from Tropical Africa, Far Eastern Entomologist 365, pp. 1-25 : 13-15

Tenuopus kylei Grichanov , sp. n.

Figs 4 , 11 , 19

TYPE MATERIAL. Holotype – ♂, South Africa: Kwazulu , Madlangula, Kosi

Bay, 21.I – 6.II 1985, R . Kyle [ NMSA]. Paratype: 1♂ , same label [ NMSA].

DESCRIPTION. Male. Head: frons black, whitish pollinose; one pair of short postvertical setae, as long as uppermost postocular seta; upper postocular setae black, increasing in length upward; lateral and lower postoculars white; ventral postcranium covered with irregular white hairs; face silvery-white, 7 times as high as wide in middle, nearly as wide as postpedicel; clypeus slightly bulging; antennae as long as height of head, with yellow scape and pedicel and yellow-orange postpedicel; pedicel projected distally on inner side, with a crown of short black setae,

one of dorsal setae as long as pedicel; postpedicel rounded, as long as high at base

(1/1); arista-like stylus dorsal, with short hairs; length ratio of scape to pedicel to postpedicel to stylus (1 st and 2 nd segments), 5/7/9/3/40; palpus and proboscis short,

yellow, covered with white hairs, proboscis also with a pair of black lateral setae.

Thorax: pleura yellow; mesonotum mostly orange-yellow, with median greenish blue stripe half as wide as surface between dorsocentral bristles, wider posteriorly and black on scutellum dorsally; 6 dorsocentral setae with posterior pair shifted laterally; acrostichals biseriate, strong, nearly reaching 5 th dorsocentrals; scutellum with 2 strong bristles and 2 short lateral hairs; proepisternum with 2 yellow setae.

Legs yellow; last segments of hind tarsus brown; fore and mid coxae with black hairs anteriorly and 5-7 black apical bristles of various length; hind coxa with one long black outer bristle above middle; fore femur with light and dark fine erect ventral hairs, at most half as long as diameter of femur, and 1-2 black posteroventral cilia; fore tibia simple, with 1 anterodorsal and 1 posterodorsal at base, 1 dorsal in middle, 1-2 apical setae; basitarsus with 1 dorsal; other tarsomeres simple; claws simple; mid femur with very small anterior preapical seta, practically glabrous ventrally, with few dark ventral hairs; mid tibia with 3 anterior, 3 posterodorsal, 3

ventral, 3-4 apical seta; hind femur without long hairs, with 1 strong anterior preapical seta; hind tibia with 3 anterior, 2 dorsal, 3 posterodorsal, 2-3 apical setae. Femur,

tibia and tarsomere (from first to fifth) length ratio: fore leg: 9/12/15/8/4/2/1, mid leg: 10/15/12/5/4/2/1, hind leg: 12/20/6/6/4/2/1.

view, and cercus, dorsal view (17): 15 – T. bururiensis sp. n.; 16–17 – T. gorongosaensis sp.

n.; 18 – T. kirkspriggsi sp. n.

Wing greyish, almost hyaline, veins brown; subcosta very thin; ratio of part of costa between R 2+3 and R 4+5 to that between R 4+5 and M 1, 7/1; M 1 with gentle arc to apex, reaching costa right before wing apex; M 2 present as fold on membrane; crossvein dm-m straight; ratio of crossvein dm-m to apical part of M 1+2 (fork-handle) to apical part of M 4, 5/16/13; anal vein foldlike, not reaching wing margin; anal angle obtuse; lower calypter yellow, with black apex and pale setae; halter yellow with orange knob, halter stem thin and long, with dorsal and ventral groups of short hairs distally.

Abdomen mostly yellow-orange, black setose; 2 nd –6 th yellow, with narrow brown or black anterior and posterior edging; 8 th segment and epandrium entirely yellow;

8 th segment with yellow hairs; cerci and surstyli yellow; surstylus and epandrial lobe black at apex; cercus covered with dark-yellow hairs and setae; hypandrium small, simple; phallus thin and simple; epandrial lobe prominent, finger-like,

narrow at apex, with 2 ventral setae; 3 pedunculate epandrial setae of different length and 2 epandrial processes between hypandrium and base of epandrial lobe,

including 1 process with rather long apical seta and 1 slightly longer process with microscopic apical seta; surstylus about as long as cercus, with apical incision, with thin dorsal and thick ventral lobes; dorsal lobe of surstylus with 1 small apical seta;

ventral lobe of surstylus with 2 small apical setae; cercus nearly as long as epandrium, subtriangular, covered with hairs dorsally and setae distally.

MEASUREMENTS (in mm). Body length 6.0; antenna length 1.4; wing length

5.1; wing width 1.6.

Female. Unknown.

ETYMOLOGY. The species is named after the South African zoologist, Dr. R.

Kyle (Ezemvelo KwaZulu Natal Wildlife), the collector of the type specimens.

DISTRIBUTION. South Africa.

DIAGNOSIS. T. kylei sp. n. belongs to a group of species with biseriate acrostichals, being the closest to T. kononenkoi , differing from the latter in male fore basitarsus longer, about 1.3 times as long as fore tibia; and male surstylus bifurcated only at apex, with broad lobes (see key above).

Figures

Figs 1–6. Tenuopus spp., head: 1 – T. bururiensis sp. n.; 2 – T. gorongosaensis sp. n.; 3 – T. kirkspriggsi sp. n.; 4 – T. kylei sp. n.; 5 – T. lomholdti sp. n.; 6 – T. unicolor (Becker).

Figs 7–14. Tenuopus spp. 7 – T. shcherbakovi Grichanov, head in ethanol with everted

Figs 19–22. Tenuopus spp., epandrial lobes and surstylus, right lateral view: 19 – T. kylei