Iteaphila bulbosa Sinclair, 2012

Sinclair, Bradley J. & Shamshev, Igor V., 2012, 3561, Zootaxa 3561, pp. 1-61 : 7-10

Iteaphila bulbosa Sinclair sp. nov.

( Figs. 4B, 5A)

Type material. HOLOTYPE, ♂ labelled: “[CANADA] Atlin B.C. 2200'/ 7.vi.1955 / H. Huckel ”; HOLOTYPE / Iteaphila / bulbosa/ Sinclair [red label]” ( CNC) . PARATYPES: CANADA. Alberta: Edmonton, University of Alberta Ecol. Res., 13–22.v.1986, MT, spruce/aspen, B. V. Brown (1 ♀, CNC); Eisenhower Junction [= Castle

Junction], 4700', Banff NP , 11.vii.1955, GES (2 ♀, CNC, USNM) ; Kananaskis, For. Exp. Sta. Seebe, 5–15.vi.1968, H.J. Teskey (2 ♀, CNC); Ptarmigan Trail, 6500', 20.vii.1928, O. Bryant (2 ♀, CAS). British Columbia: Alaska Hwy, Buckinghorse R PP, 279 kmN Dawson Creek, 6.vi.1996, PHA (1 ♀, USNM); Atlin, 2200', 3–29.vi.1955, B.A. Gibbard, H. Huckel (3 ♂, 8 ♀, CNC); King Salmon Lk , 58˚43' 132˚54', 1750', 14.vii.1960, R . Pilfrey (1 ♀, CNC); Kootenay NP , Daer-Pitts Aspen Burn 2, 2–9.vi.2000, MT , G. Gareau (1 ♂, 4 ♀, CNC); Kootenay NP , Daer- Pitts Aspen Burn 1, MT , 25.vi.-9.vii.2000, G. Gareau (5 ♀, CNC); Kootenay NP , Daer-Pitts Aspen Control 1-2, MT , 17.vi.-2.vii., 2–16.vii.2000, G. Gareau (3 ♀, CNC); Salmon Arm, 31.iii., 1.iv.1992, AB (2 ♀, CNC); Summit Lk, mi 392 Alaska Hwy, 4500–5300', 15–27.vi.1959, REL (3 ♂, CNC, USNM). Yukon: Dempster Jct, 40 kmE Dawson , FIT , 19.vi.-25.viii.1984, S. & J. Peck (2 ♀, CNC); Klondike Loop, J 390 km, McQuesten, 14.vi.1996, PHA (1 ♀, USNM); North Fork Crossing, mi 42–43, Peel Plateau Rd , 3500', 24.vi.-4.vii.1962, PJS (4 ♀, CNC) ; Swim Lakes, 133˚ 62˚13', 3200', 8.vi.1960, J.E.H. Martin (1 ♀, CNC). USA. Alaska: Chitina, 2.vi.1953, W.C. F. (1 ♀, WSU); Nome Area, mi 17 Kougarok Rd , MT , 64˚42'22''N 165˚17'50''W, 20–26.vi.2005, J. & R . Skevington (5 ♀, CNC); Nome Area, mi 55 Kougarok Rd , MT , 65˚05'23''N 164˚40'20''W, 24–26.vi.2005, J. & R . Skevington (1 ♀, CNC); Taylor Hwy, Walker Fork Cpgd , 17.vi.1996, PHA & M.M. Arnaud (1 ♀, USNM) .

Recognition. This species is distinguished by its short proboscis and dense grey pollinosity in females and quadrate epandrium with narrow apical third and broad epandrial bridge, short cerci and short hypandrial setae in males.

Description. Wing length 4–4.7 mm. Male. Head subtriangular, brown, with brown setation; occiput greyish pollinose. Holoptic, with upper ommatidia enlarged. Frons represented by small triangular space just above antennae, greyish pollinose. Ocellar triangle very prominent, bearing moderately long proclinate setae. Postvertical and postocular setae moderately long, thin; occiput covered with numerous similar setae longer on lower half. Antenna brown; scape elongate, postpedicel nearly 3 times longer than basal width, smoothly tapered; stylus shorter than basal width of postpedicel. Proboscis short, rarely projected beyond head capsule; labium less than half as long as head is high; palpus projected parallel to labrum, slightly longer than labrum.

Thorax brown with thick and long greyish pollinosity; setation brown to black; smoothly arched, prescutellar depression very slightly prominent; scutum viewed dorsally dull brown, with pubescent vittae along inner edge of dorsocentral row; viewed anteriorly velvety golden-brown. Proepisternum with few brownish setae. Postpronotal lobe with pale apical patch with 1–2 (usually 1) long setae and 2–3 long pale setulae. Mesonotal setae not prominent; acr short, biserial, sometimes with additional setulae on anterior part, lacking on prescutellar depression; dc uniserial throughout, slightly longer than acr, 3 prescutellar dc pairs longer, darker and stouter; many more or less prominent presut spal (often with additional setulae); 3 npl with additional thinner setae of different lengths along ventral ridge; 2–3 psut spal; 1 long pal; 7–8 pairs of sctl arranged in row.

Legs wholly brownish. Coxae and trochanters with numerous long pale setae. Fore and mid femora with short to moderately long numerous bristly setae on posteroventral (stronger on mid femur at least apically and longer than width of femur), posterior and dorsal faces. Hind femur with similar somewhat longer anteroventral and dorsal bristly setae. Tibiae lacking prominent setae, with some longer dorsal and ventral setulae. Tarsomere 5 on all legs slightly flattened; pulvilli broad, shorter than tarsal claw.

Wing distinctly infuscate, with brown veins; no bristle at wing base; stigma distinctly brownish, elliptical, overlapping apex of R 1; anal lobe very prominent, acute. Sc complete; R 2+3 straight in apical part; radial fork with base proximal to apex of R 2+3; R 5 and M 1 divergent before wing-apex; cell d broad and truncate or slightly produced apically, longer than basal cells; m-m crossvein long, M branches widely separated; dm-cu crossvein slightly concave; M 4 somewhat shorter than dm-cu crossvein. Apex of cell cua recurved, slightly round, CuP+CuA long, ending just short of wing margin. Halter brown.

Abdomen with tergites viewed dorsally and laterally dull brownish (often rather subshining) but viewed posteriorly velvety brown; with numerous long pale setae, somewhat darkly on posterior segments; setae of basal segments longer than width of segment. Terminalia concolorous with abdomen, small, stout and somewhat rounded. Hypandrium rounded and broad apically; gonocoxal apodeme long and slender ( Fig. 4A). Postgonite posterior to phallus, extended slightly beyond epandrium at apex of hypandrium; closely approximated, anterior face with toothed margin and pointed apically. Epandrium not greatly inflated laterally; dorsal bridge broad, nearly half length of lamella; produced distally into broad lobe. Surstylus not distinguished. Phallus extended slightly beyond cercus, arched subapically with rounded apex; ejaculatory apodeme slender, shorter than gonocoxal apodeme; base of phallus lacking lobe. Cercus short, rounded posterodorsally, only slightly extended beyond epandrium; posteroventral corner produced, triangular; hypoproct not produced into lobe.

Female. Dichoptic, with equally small ommatidia. Frons very broad, divergent toward ocellar tubercle, clothed in pruinescence, bearing short marginal setulae. Occiput with somewhat stronger postvertical and postocular setae and shorter bristly setae on lower part. Scutum viewed dorsally thickly greyish pollinose, with 3 prominent brown vittae along acrostichal and dorsocentral bristles (sometimes in this view scutum appearing wholly greyish brown), viewed anteriorly silver grey pollinose; presutural supra-alar and notopleural faces pollinose; katepisternum and anepisternum completely clothed in greyish pollinose. Scutellum with 7–8 pairs of brown setae. Legs varying in colour but always paler in than male; apical third, knees and extreme base of fore and mid tibiae yellowish; coxae pale to greyish pollinose; setae short and pale. Wing finely brownish infuscate veins, somewhat darker than male. Abdomen brownish, viewed dorsally pollinose, with short pale setae. Cercus elongate, concolorous with abdomen.

Etymology. This species is named in reference to the laterally expanded epandrium.

Distribution. This species is found in northwestern North America, ranging from Alaska to southern British Columbia and Alberta ( Fig. 5A).