Iteaphila kyrgyzstanensis, Sinclair & Shamshev, 2021

Sinclair, Bradley J. & Shamshev, Igor V., 2021, World revision of Iteaphila with unbranched radial vein (Diptera: Empidoidea: Iteaphilidae), Zootaxa 4968 (1), pp. 1-89 : 28-29

Iteaphila kyrgyzstanensis sp. nov.

( Figs 31 , 81 )

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Type material. HOLOTYPE ♂, labelled [printed in Cyrillic , Russian]: [ Kyrgyzstan] “ur. [=urochische, tract] Kaindy, 30 km E/ Naryn [41°26′N 76°00′E], Tian Shan/ Gorodkov 8 VIII [1]969”; “ 3400 m / subalpine meadow”; “ HOLOTYPE / Iteaphila /kyrgyzstanensis/Sinclair&Shamshev[red label]” ( ZIN) . PARATYPES: KYRGYZSTAN. Same data as holotype (4 ♂, ZIN) . KAZAKHSTAN. Almaty env. [43°15′N 76°54′E], Zailiyskiy Alatau, river Gorelchik valley, Picea forest, 8.vii.2009, O. Kosterin (1 ♂, ZMMU) .

Recognition. This species is distinguished from nearly all other species by the dichoptic males and distinguished from I. dichoptica sp. nov. by the darkly coloured male terminalia and longer antennal stylus.

Description. Wing length 2.6–2.8 mm. Male. Head dark brown in ground-colour, with pale brown to black setation, occiput thinly to densely greyish pollinose. Eyes dichoptic, ommatidia equally small. Frons very broad, somewhat widened toward ocellar tubercle, shiny, with marginal setulae. Ocellar triangle prominent, with 2 pairs of long hair-like setae. Postvertical setae longer than short postocular setae, thin; occiput covered with numerous similar setae in lower part. Antenna dark brown; scape short, slightly shorter than globular pedicel, both with short setae; postpedicel rather broad, parallel sided, nearly 2.5 times longer than basal width, tapered at apex; stylus ca 2.5 times longer than wide, sensillum-tipped; segment 9 tubular, 2 times longer than wide, apical sensillum about half as long as segment 9. Proboscis very long, projected obliquely; labium longer than head height; palpus with expanded apex, projected parallel to labrum, much shorter than labrum.

Thorax dark brown in ground-colour, with brown to black setation; scutum viewed dorsally mostly shiny with pruinescence confined anteriorly, anterior portion of acr row, notopleuron and prescutellar depression, with 2 distinct shiny vittae between acrostichal and dorsocentral setae; viewed anteriorly densely pruinose anteriorly on postpronotal lobes to acrostichal and dorsocentral rows, with 2 distinct shiny vittae; mesopleuron uniformly greyish pruinose with bare, shiny katepisternum, posterior half of anepisternum and anepimeron. Proepisternum with a few hair-like setae. Postpronotal lobe with 1 long thin and several shorter setae. Mesonotal setae distinct, thin, short; acr biserial, arranged in 2 closely spaced irregular rows, lacking on prescutellar depression, distance between paired rows shorter than length of acr; dc uniserial, offset from row anteriorly, subequal in length with acr, 2–3 distinct prescutellar dc; 1 ph, 1 presut spal (sometimes with additional setulae), 3–4 npl (with a few additional shorter setae), several psut spal setulae, 1 pal and several short setulae, 5–6 pairs of sctl.

Legs, including coxae, almost entirely brownish, subshiny and rather stocky; knees of fore and mid legs brownish, tarsi somewhat darker. Coxae and trochanters with unmodified hair-like setae. Fore femur with row of short anteroventral setae and somewhat longer setae on posteroventral, dorsal and posterior faces. Mid femur with moderately long posteroventral bristly setae along entire length, bearing some moderately long setae on dorsal and posterior faces. Hind femur with long anteroventral and dorsal setae along whole length. Tibiae without prominent setae. Tarsomere 1 of mid and hindlegs with pair of rows of stiff ventral setae; tarsomere 5 not flattened on all legs; pulvilli broad, shorter than tarsal claw.

Wing faintly infuscate; basal costal seta absent; pterostigma indistinct brownish, elliptical, overlapping apex of R 1; anal lobe very prominent, acute. Sc complete; R 2+3 smoothly arched posterior to pterostigma; R 4+5 unbranched; cell dm only slightly broader apically, longer than basal cells, produced apically; base of M 2 (crossvein) more than one-fourth length of dm-m, M branches widely separated; dm-m crossvein straight. Apex of cell cua rounded not strongly recurved, CuA+CuP long, faint, ending as fold at wing margin. Halter brown.

Abdomen brown, subshiny, finely brownish grey pollinose, covered with somewhat long brownish setae. Terminalia ( Fig. 31 ) concolorous with abdomen. Hypandrium with numerous long setae, rounded, upcurved apically with rounded and truncate apex; gonocoxal apodeme short and broadly expanded apically; inner apodeme small and retracted, shorter and narrower than ejaculatory apodeme; postgonite short, arched, produced into pair of slender apical lobes. Phallic guide extended well beyond epandrium, parallel with phallus and strongly curved subapically; curved apical section paired with toothed dorsal margin subapically; apex tapered. Epandrium not inflated laterally; dorsal bridge narrow; produced distally into horizontally projecting surstylus; apex of surstylus with hook-like projection medially. Phallus slender, arched well beyond epandrium, gently nearly subapically; apical section broad, subrectangular, truncate; ejaculatory apodeme plate-like, rounded, subequal in length with gonocoxal apodeme. Cercus long, narrow, more than half length of epandrium; apex rounded, extended free from epandrium; hypoproct produced into pair of very long, slender processes, nearly as long as the cercus, projecting beyond epandrium.

Female. Unknown.

Distribution. Palaearctic: Kazakhstan, Kyrgyzstan. This species is known only from the Tian Shan Mountains of Central Asia ( Fig. 81 ).

Etymology. This species is named after the country of the type locality.

Remarks. The male terminalia of the two species with dichoptic males are very different, with I. kyrgyzstanensis sp. nov. appearing to be more closely related to species with long, spine-like projections on the phallic guide and consequently tentatively assigned to the I. macquarti species group.

Figures

FIGURES 29–32. Male terminalia of Iteaphila with unbranched R 4+5, lateral view. 29, I. bartaki sp. nov.; 30, I. falki sp. nov.; 31, I. kyrgyzstanensis sp. nov.; 32, I. ribesii (Becker). Scale bar = 0.1 mm. Abbreviations: cerc—cercus; ej apod—ejaculatory apodeme; goncx apod—gonocoxal apodeme; hypd—hypandrium; hyprct proc—hypoproct process; i apod—inner apodeme; ph—phallus; ph gd—phallic guide; sur—surstylus.

FIGURES 79–81. Distribution of Iteaphila with unbranched R 4+5. 79, I. longiphallus sp. nov., I. recurvata sp. nov.; 80, I. falcata Sinclair, I. parastentor sp. nov., I. stentor (Melander); 81, I. atruensis sp. nov., I. gracilis sp. nov., I. kyrgyzstanensis sp. nov., I. sakhalinensis sp. nov., I. spinosa sp. nov.