Iteaphila napaea Melander

Sinclair, Bradley J. & Shamshev, Igor V., 2012, 3561, Zootaxa 3561, pp. 1-61 : 23-26

Iteaphila napaea Melander

( Figs. 5B, 6F)

Iteaphila napaea Melander, 1946: 36 . Type locality: Lake Waha , Idaho, USA.

Type material examined. HOLOTYPE, ♂ labelled: “ Lake Waha ,IDA/ 9 June 1918 / A.L.Melander ”; “ HOLOTYPE / Iteaphila / napaea Mel. ”; ALMelander/ Collection/ 1961” ( USNM) . PARATYPES: CANADA. British Columbia: Kaslo , 10.v., R . P. Currie (1 ♀, USNM) . USA. Idaho: same data as holotype (2 ♂, 2 ♀, USNM); ditto, 30.v.1924 (1 ♂, 2 ♀, USNM) . Washington: Loon Lake , 16.v.1924, ALM (1 ♂, USNM) ; Mt. Rainier, Summerland , 24.vii.1924, ALM (1 ♀, USNM) ; Tacoma , cherry blossom, 27.v.1917 (14 ♀, USNM); Valleyford, 29.v.1911, ALM (1 ♂, USNM) .

Additional material examined. CANADA. British Columbia: Bowser , 7.v.1955, J. R . McGillis (1 ♀, CNC); Chilliwack Lk Rd , 49º06'N 121º36'W, 800 m, 15.vi.2000, H. Goulet, Gillespie (1 ♂, CNC); Cowichan Lk, 19.vi.1964, J.A. Chapman (1 ♀, CNC); Diamond Head Trail , 3200', 1–3.viii.1953, GJS (1 ♂, 1 ♀, CNC) ; Duncan , 9.vi.1955, GES (1 ♀, CNC) ; 24 km E Enderby, 8–9.vi.1991, AB (4 ♀, CNC); 42 km NE Hope, 31.vii., 2.viii.1991, AB (2 ♂, 1 ♀, CNC); Lava Lk, 50 mi N Terrace , flowers of Cornas stolonifera , 8.vii.1960, JGC (1 ♂, CNC) ; Lemon Ck, 10.vii.1967, J.H. Shepard (1 ♀, UBCZ); Lisadale Lk, bog, nr. Terrace , 14.vi.1960, JGC (2 ♀, CNC) ; Mission City , 19.vi.1953, GJS (1 ♀, CNC) ; Muncho Lk PP, Alaska Hwy, ca 460, 29.vi.1978, PHA (1 ♀, USNM); Mt. Revelstoke , 6000', 25–31.vii.1952, GJS , G.P. Holland (2 ♂, 7 ♀, CNC); Mt. Revelstoke NP , Eva Lk trail, 6000', 6,7. viii.1952, GJS (3 ♂, 6 ♀, CNC) ; Mt. Revelstoke NP , Snowfield, Jade Pass , 7300', 3.viii.1952, GJS (2 ♀, CNC) ; Prince George, 9.vi.1959, G.G.E. Scudder (1 ♀, UBCZ); Remo , 7 mi SW Terrace, 13.vi.1960, JGC (1 ♂, CNC) ; Robson , 6.vi.1962, 4.vi.1965, 8–19.v.1968, 9,22.v., 14.vi.1969, 6.vi.1970, H. R . Foxlee (6 ♂, 12 ♀, UBCZ); 6 km E Salmon Arm, 30.iv.1992, AB (1 ♂, CNC); 39 km E Salmon Arm, 10.v.1992, AB (1 ♂, CNC); 24 km NE Sicamous, 19.v.1991, AB (2 ♂, 1 ♀, CNC); Mt. Thornhill nr Terrace , 3000–4000', 29.vii.1960, W. R . Richards (1 ♀, CNC); 6 mi E Terrace , 3.vi.1960, WWM (1 ♀, CNC) ; 32 mi SW Terrace , on flowers of Heracleum lanatum , 6,8. vi.1960, GES, CHM, R . Pilfrey (7 ♂, 10 ♀, CNC); 50 mi SW Terrace , 24.vi.1960, JGC (1 ♀, CNC) ; Vancouver , 7.v.1932, 30.v.1953, GJS (2 ♀, UBCZ) ; Vancouver, Point Grey , 1,16. v.1973, JRV (2 ♀, CNC) . Yukon: Haines Jctn, Pine Ck , 25.vi.1981, CSG (2 ♀, UBCZ) ; Ross R , 13 mi NE, 8.vi.1981, CSG (1 ♀, UBCZ) ; Little Salmon R , 62º15'N 135º27'W, 28.vi.1985, E. Krebs & J.J. Robinson (2 ♀, UBCZ); Whitehorse, Alaska Hwy across Yukon R , 12.vi.1996, PHA, M.M. Arnaud (1 ♀, USNM) . USA. California: Alpine Co., W Fk Carson R , Snowshoe Spring Cpgd, 6600', 19–20.vi.1971, PHA, M.M. Arnaud (4 ♂, 5 ♀, USNM); Barton Flat , 12.vi.1954, ALM (1 ♀, USNM) ; Marin Co., Mill Valley, Blithedale Ridge , 110 m, 2–4.iv.1966, PHA (1 ♂, USNM); Napa Co. , Howell Mt. , 2 mi NNE Angwin, 1300', 18.iv.1986, H.B. Leech (3 ♂, 2 ♀, CAS); Plumas Co., Lassen NF, N Fk Feather R , 28.v.1977, DDW (1 ♂, CAS); San Bernardino Co., Camp Angelus [N 34.145 W 116.982], White Ceanothus , 22, 28.v., 2.vi.1947, ALM (54 ♂, 20 ♀, USNM) ; Seven Oaks , 27.iv.1955, ALM (1 ♀, USNM) ; Tuolumne Co., Pinecrest, 13.vii.1948, PHA (1 ♀, USNM); Yoshemite , 25.v.1915, A.K. Fisher (1 ♀, USNM) . Colorado: Longs Peak Tr , vii.1920, Cockerell (1 ♀, USNM) . Idaho: Nez Perce Co., Zaza Rd., Lk Waha & Craig Mt., N 46°11'58''W 116°48'59'', roadside flowers, 11.vi.2011, BJS (6 ♂, 6 ♀, CNC) . Oregon: Josephine Co., Bolan Lk, pollen in gut, 16.vi.1988, J.A. Downes (1 ♂, 1 ♀, CNC); Klamath Co. , 12 mi SE Keno, 6.v.1964, V . Miller, J. Schuh (3 ♂, WSU) . Washington: Lk Cushman, 27.vi.1917, H.G. Dyar (1 ♀, USNM); Early Winters R . S., Okanogan NF, 30.v.1966, D.S. Horning (1 ♂, CAS); Whatcom Co., Glacier , 25.v.1965, F. Schmid (1 ♀, CNC); Glacier , 4.vi.1917, H.G. Dyar (1 ♀, USNM) .

Recognition. This species is distinguished by four-serial acrostichals, with paired rows separate by length of the setulae, clear female wings and the male hypoproct lobes are very short.

Re-description. Wing length 2.7–3.5 mm. Male. Head subcircular, black, with black setation; occiput brownish pollinose. Holoptic, with upper ommatidia enlarged. Frons represented by small triangular space just above antennae, bare, brownish grey pollinose. Ocellar triangle very prominent, with long, thin, proclinate setae. Postvertical and postocular setae rather long, thin, hair-like; additionally, occiput covered with numerous similar setae longer on lower part. Antenna brown; scape short, subequal to globular pedicel, both with short setae; postpedicel nearly 4.5 times longer than basal width, smoothly tapered; stylus very short, shorter than basal width of postpedicel, bristle-tipped, length of segment 9 about equal to width, apical bristle as long as segment 9. Proboscis long, projected obliquely; labium about as long as head height; palpus projected parallel to labrum, subequal to length of labrum.

Thorax black (postpronotal lobe often yellowish posteriorly and postalar ridge brownish yellow), with brown to black setation; smoothly arched, prescutellar depression very slightly prominent; scutum viewed dorsally largely velvety brown, slightly matt, with broad black brown vittae down acr and dc setae; anepisternum uniformly greyish brown pollinose. Proepisternum with several brown bristly hairs in lower and in upper part. Postpronotal lobe with several short, fine setae. Mesonotal setae mostly not prominent, usually 2–3 npl, 3 prescutellar dc, 1 pal and sctl somewhat stronger but their number and position greatly varying (except pal); acr very short, 4-serial, in paired rows separated by length of setulae ending at prescutellar depression; dc short, slightly longer than acr, biserial anteriorly and uniserial posterioly; 6–8 pairs of sctl in single row.

Legs light to dark brown (knees not paler). Coxae and trochanters with several short, fine setae. Fore and mid femora with rows of long, numerous hair-like setae on posteroventral, posterior and dorsal faces. Hind femur with row of long anteroventral and dorsal and short posteroventral hair-like setae. Tibiae lacking prominent setae. Tarsomere 5 on all legs slightly flattened; pulvilli broad, shorter than tarsal claw.

Wing distinctly brownish infuscate, with brown veins; no bristle at wing base; stigma distinct brownish, elliptical, overlapping apex of vein R 1; anal lobe very prominent, acute. R 2+3 straight to arched beneath stigma; radial fork with base proximal to apex of R 2+3; R 5 and M 1 divergent before wing-apex; cell d broad, longer than basal cells, slightly produced apically, truncate; m-m crossvein long, M branches widely separated; dm-cu crossvein straight; M 4 subequal in length to dm-cu crossvein. Apex of cell cua slightly rounded, CuP+CuA long, ending just short of wing margin. Halter with brown knob and paler stem.

Abdomen narrowed proximad, covered with numerous, brown, long hair-like setae, posteromarginal setae not prominent; tergites viewed dorsally subshining finely greyish brown pollinose, viewed posteriorly densely greyish brown pollinose; sternites finely pollinose. Terminalia concolorous with abdomen, small. Hypandrium slightly rounded, upcurved apically with broadly rounded and slightly notched apex; gonocoxal apodeme short and slender. Postgonite posterior to phallus, extended beyond epandrium, parallel with phallus and bent nearly at right angles subapically; bent apical section subequal to apex of phallus, paired with several pairs of long spine-like projections; apex rounded. Epandrium not greatly inflated laterally; dorsal bridge very narrow; produced distally into slender subapical surstylus; apex of surstylus slender, arched medially. Phallus long and slender, arched slightly beyond cercus, bent nearly at right angles subapically; apical section short and straight; apex rounded and membranous; ejaculatory apodeme plate-like, rounded, longer than gonocoxal apodeme; base of phallus produced posteriorly into pair of widely separated lobes, nearly parallel to margin of hypandrium, slightly arched, apex rectangular and angular. Cercus tapered, slightly shorter than epandrium, finger-like and broad basally, apex rounded, extended well free from epandrium; hypoproct produced into pair of very short, divergent lobes, only projecting slightly free from cercus ( Fig. 6F).

Female. Head and thorax with shorter setation. Occiput densely brownish grey pollinose. Dichoptic, with equally small ommatidia. Gena slightly produced. Frons very broad, almost parallel-sided, with marginal setulae, largely shining. Anterior ocellars broadly lateroclinate, moderately long; posterior ocellars minute. Thorax with scutum viewed dorsally densely grey pollinose, with 3 brownish vittae down acr and dc setae. Some mesonotal setae prominent, including 2–3 npl, 1 pal and 3–4 pairs of prescutellar dc; dc mostly uniserial. Legs yellowish to brown; setation of fore and mid femora inconspicuous. Wing almost hyaline. Abdomen pale yellow to brown, contrasting with dark thorax; apical tergites shiny; covered with short, pale brownish setae. Cercus brownish, elongate, slender.

Distribution. This species is confined to western North America, ranging from the Yukon Territory to southern California ( Fig. 5B). Possible records from Alberta, Colorado, Nevada and Wyoming need to be verified with collection of male specimens.