Iteaphila taiwanensis Shamshev, 2012

Sinclair, Bradley J. & Shamshev, Igor V., 2012, 3561, Zootaxa 3561, pp. 1-61 : 46-47

Iteaphila taiwanensis Shamshev sp. nov.

( Figs. 11D, 12B)

Type material. HOLOTYPE, ♂ labelled: “(Taiwan)/ Tungpu, Takata [in Japanese ]/ Lulinshan / Nantou Hsien ”; “ 10.iv.1965 / T. Saigusa”; “ HOLOTYPE / Iteaphila / taiwanensis/ Shamshev [red label]” ( KUMF) . PARATYPES: TAIWAN. Same data as holotype (11 ♂, 2 ♀, KUMF, CNC); Alishan, 2300 m, Chiayi Hsier , 9.iv.1965, TS (1 ♀, KUMF); vicinity of Taataka-anbu , ca. 2700 m, Kagi-Ken, 3.iv.1967, T . Shirozu (6 ♀, KUMF); Tonpogoe , 2500 m, Kagi-Ken, 28.iii.1967, T . Shirozu (1 ♂, KUMF); Tumpu-Taataka, Lulinshan , 10.iv.1955, TS (1 ♂, KUMF) .

Recognition. Males of this species are distinguished by the long, strap-like postpedicel and dichoptic condition. Females are characterizd by the large shiny spot on the katepisternum and pale yellow, hair-like abdominal setae.

Description. Wing length 2.9–3.9 mm. Male. Head brown, subglobular, with occiput produced, bearing black setation, finely greyish pollinose. Dichoptic, with equally small ommatidia. Frons very broad, shining or finely greyish pollinose (subshining) in different degrees, with several marginal setulae. Ocellar triangle prominent, with 2 pairs of thin setae; anterior ocellars long, proclinate and lateroclinate; posterior ocellars short. Postvertical and postocular setae thin, rather long; additionally, occiput covered with numerous short bristly setae on lower part. Antenna brown; scape short, subequal to globular pedicel, both with short bristles; postpedicel rather broad basally but smoothly narrowed, very long, strap-like, 6.5–7.0 times longer than wide, pubescent with long, erect microtrichia; stylus very short, hardly visible, bristle-tipped; segment 9 as long as wide, apical bristle slightly longer than segment 9. Proboscis long, projected oblique; labium about half as long as head is high; palpus projected parallel to labrum, brown, with short brownish setae, nearly as long as labrum.

Thorax black, with brownish to black (stronger setae) setation; scutum viewed dorsally uniformly matt brown, viewed anteriorly velvety brown, with darker broad vitta down acr and similar narrow vitta down dc setae; anepisternum almost wholly uniformly brownish grey pollinose, katepisternum with large shining spot on about middle. Proepisternum with several short, brownish hairs in lower and upper parts. Postpronotal lobe with 1 moderately long, thin and several short setae. Mesonotal setae prominent; acr arranged in 2 irregular rows, short, rather broad, lacking on prescutellar depression; dc uniserial, offset from row anteriorly, mostly of subequal length to acr, 3 prescutellar pairs long; several thin setulae present on presut and psut spal faces, 1–2 npl (if 2 than posterior longer) with 2–3 additional setulae, 1 pal, 4–5 pairs of sctl.

Legs long, slender, almost entirely brownish (knees and extreme apex and base of femora and tibiae, respectively, yellowish), finely greyish pollinose, with reduced inconspicuous setation. Coxae and trochanters with numerous ordinary bristly setae of different lengths. Fore femur with short, thin, posteroventral setae longer subapically. Mid femur with similar pattern of setation but posteroventral subapical setae slightly longer and stronger. Hind femur with moderately long anteroventral and dorsal thin setae (former somewhat longer than latter). Tibiae lacking prominent setae. Tarsomere 5 on all legs slightly flattened; pulvilli broad, shorter than tarsal claw.

Wing finely uniformly infuscate, with brownish, slightly clouded veins; no bristle at wing base; stigma distinct brownish yellow, elliptical, overlapping apex of vein R 1, below almost reaching R 2+3; anal lobe very prominent, acute. R 2+3 slightly sinuate in apical part; radial fork broad, nearly at right angles with base opposite apex of R 2+3; R 5 and M 1 somewhat divergent before wing-apex; cell d broad, longer than basal cells, not produced apically (truncate); m-m crossvein long, M branches widely separated; dm-cu crossvein straight; M 4 somewhat shorter than dm-cu crossvein. Apex of cell cua slightly round, CuP+CuA long, ending short of wing margin. Halter with brown knob and usually paler stem.

Abdomen brownish, subshining, finely greyish pollinose, covered with moderately long pale bristly hairs. Terminalia concolorous with abdomen, small. Hypandrium slightly rounded, upcurved apically with broadly rounded apex and deep, broad U-shaped notch when viewed posteriorly; gonocoxal apodeme short and slender. Postgonite posterior to phallus, extended beyond epandrium, parallel with phallus and strongly arched subapically; bent apical section shorter than apex of phallus, paired with apex membranous, bearing several pairs of spine-like projections; apex rounded. Epandrium not greatly inflated laterally; dorsal bridge very narrow; posterior half gradually tapered; apex of surstylus slender, arched medially ( Fig. 11D). Phallus long and slender, arched beyond epandrium, strongly bent subapically; apical section short and slightly arched; apex rounded and membranous; ejaculatory apodeme plate-like, rounded, with median notch, slightly longer than gonocoxal apodeme. Base of phallus produced posteriorly into recurved trifid lobe with outer lobes sickle-shaped; median lobe broad and apex truncate. Cercus broad, less than half length of epandrium, thumb-like and broad basally, apex broadly rounded, extended free from epandrium; hypoproct produced into pair of long, divergent lobes, projecting free from cercus.

Female. Greatly varying in body size. Frons very broad, entirely shining. Postpedicel with unmodified microtrichia; shorter, about 5.0 times as long as wide. Legs varying in colour; in darker specimens similar to male (but fore and midlegs, including coxae, paler); in paler specimens fore and mid femora and tibiae with broader yellowish spaces and corresponding coxae yellowish to brownish yellow. Halter paler, with rather dusky yellow knob (in paler specimens almost wholly yellowish). Abdomen with shorter setation. Otherwise as in male. Cercus long, slender, brownish, shining.

Distribution. This species is known only from Taiwan, above 2000 m ( Fig. 12B).

Etymology. The specific name is named after the country of origin.

Remarks. This is the only species of Iteaphila having dichoptic eyes in the male. The type series was collected on Salix surrounded by temperate forest (T. Saigusa pers. comm.).