Iteaphila saigusai Shamshev, 2012

Sinclair, Bradley J. & Shamshev, Igor V., 2012, 3561, Zootaxa 3561, pp. 1-61 : 43-44

Iteaphila saigusai Shamshev sp. nov.

( Figs. 11B, 12A)

Type material. HOLOTYPE, ♂, labelled: “[NAGANO]/ Okushiga-gohgen / May 31, 1975 / T. SAIGUSA col. ( KUMF)”; “ HOLOTYPE / Iteaphila / saigusai/ Shamshev [red label]” ( KUMF).

Additional material examined. JAPAN. Yamanashi: Kanayama , 3.vi.1963, A. Kato (1 ♀, KUMF). It is uncertain whether this female is conspecific .

Recognition. This species is very similar to I. orchestris but the dorsocentral setae are multiserial and the radial fork is elongate.

Description. Wing length 3.9 mm. Male. Head brown, with brown to black setation, occiput finely greyish brown pollinose. Holoptic, with upper ommatidia enlarged. Frons represented by small triangular space just above antennae, greyish brown pollinose, lacking setulae. Ocellar triangle prominent, two pairs of thin proclinate setae; anterior ocellars moderately long, posterior ocellars short. Postvertical and postocular setae thin, moderately long; additionally, occiput covered with numerous long hairs in lower part. Antenna brown; scape short, subequal to globular pedicel, both with short setae; postpedicel narrow, long, nearly 4.0 times longer than wide, smoothly tapered; stylus very short, undistinguishable from apex of postpedicel, bristletipped; segment 9 very short, apical bristle nearly as long as segment 9. Proboscis long, projected obliquely; labium about as long as head is high; palpus projected parallel to labrum, brown, with short brownish setae, nearly as long as labrum.

Thorax black, with black setation; scutum viewed dorsally dull black brown with hardly prominent brown vittae down acr and dc setae; viewed anteriorly velvety brown, with more distinct vittae; anepisternum with small shining spot on middle. Proepisternum with several brownish hairs in lower and upper parts. Postpronotal lobe with 1 long and several short setae. Mesonotal bristles prominent; acr arranged in 2 irregular narrow rows, short, lacking on prescutellar depression; dc multiserial, mostly subequal in length to acr, 3 prescutellar pairs long; 1 presut spal, 4 long npl (with several short bristles), row of psut spal of different lengths, 1 pal, 8 pairs of sctl.

Legs long, slender, almost wholly brownish, knees yellowish. Coxae and trochanters with ordinary bristly hairs of different length. Fore femur with moderately long, thin setae on posteroventral, dorsal and posterior faces. Mid femur with similar pattern of setation but posteroventral setae stronger (especially on apical half). Hind femur with longer anteroventral and dorsal thin setae. Tibiae lacking prominent setae. Tarsomere 5 on all legs slightly flattened; pulvilli broad, shorter than tarsal claw.

Wing distinctly infuscate, with brownish veins; no bristle at wing base; stigma distinct brownish, elliptical, overlapping apex of vein R 1; anal lobe very prominent, acute. R 2+3 slightly sinuate in apical part; radial fork elongate, with base proximal to apex of R 2+3; veins 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 longer than dm-cu crossvein. Apex of cell cua slightly rounded, CuP+CuA long, ending short of wing margin. Halter brown.

Abdomen brown; tergites viewed dorsally or laterally subshining, finely pollinose, viewed posteriorly velvety brown; covered with numerous long (except tergites 6–8) brownish bristly hairs. Terminalia concolorous with abdomen, small. Hypandrium slightly rounded, upcurved apically with broadly truncate apex, sharply tapered in ventral view; gonocoxal apodeme short and slender. Postgonite posterior to phallus, not extended beyond epandrium, parallel with phallus and curved sharply subapically; bent apical section shorter and more strongly arched than apex of phallus, closely approximated, paired with sculptured surface, more pronounced along outer margin; apex rounded. Epandrium not greatly inflated laterally; dorsal bridge narrow; produced distally into slender subapical surstylus; apex of surstylus slender, hook-like arched slightly medially. Phallus long and slender, arched beyond epandrium, bent nearly at right angles subapically; apical section long and sharply arched apically ( Fig. 11B); apex rounded and membranous; ejaculatory apodeme plate-like, rounded, subequal in length to gonocoxal apodeme; base of phallus produced posteriorly into slender lobe, strongly arched, broad subapically, tapered to slender apex. Cercus subquadrate, slightly tapered, with broadly rounded apex; shorter than epandrium; hypoproct produced into pair of short, divergent lobes, one-third length of apical portion of cercus.

Female. Unknown.

Etymology. The species is named after the collector of this unique species and in recognition of Dr. Saigusa’s dedication to Empidoid research.

Distribution. This species is confirmed from a single locality in Nagano Prefecture, Japan ( Fig. 12A).