Iteaphila longipalpis (Melander)

Sinclair, Bradley J. & Shamshev, Igor V., 2021, World revision of Iteaphila with unbranched radial vein (Diptera: Empidoidea: Iteaphilidae), Zootaxa 4968 (1), pp. 1-89: 49-51

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Iteaphila longipalpis (Melander)

comb. nov.

Iteaphila longipalpis (Melander)   comb. nov.

( Figs 8 View FIGURES 8–10 , 48 View FIGURES 45–48 , 64 View FIGURES 62–65 )

Anthepiscopus longipalpis Melander, 1928: 106   . Type locality: Arlington , Washington, USA.

Anthepiscopus longipalpis: Melander, 1965: 455   .

Type material examined. HOLOTYPE ♀, labelled: “Arlington [48°10′52″N 122°8′20″W]/ 5.21.[190]8Was”; “window”; “ TYPE / Anthepiscopus   / longipalpis/ Mel. [red label]”; “ALMelander/ Collection/ 1961” ( USNM). GoogleMaps  

Additional material examined. CANADA. Alberta: Banff NP   [51.5°N 116.0°W], 14 mi W Banff , Ledum groenlandicum   , 7.vii.1955, GES (1 ♀, CNC) GoogleMaps   ; Banff NP, 26 km N Lk. Louise, trib. Mosquito Ck [51°37′N 116°19′W],, BJS (1 ♂, CNC) GoogleMaps   . British Columbia: 37 km W Anahim Lake [52°24′N 125°14′W], 6.vii.1992, A. Borkent (2 ♂, CNC); GoogleMaps   same data except, 48 km NW, 14.vii.1992 (1 ♂, CNC); GoogleMaps   Cowichan Lk. [48°49′N 124°02′W],, J.A. Clapman (2 ♀, CNC); GoogleMaps   Cultus Lk . [49°04′N 121°58′W], 24.v.1965, F. Schmid (1 ♂, 1 ♀, CNC); GoogleMaps   Galiano Is. [48°55′N 123°25′W], Spanish Hills, 29.iv.1979, 9.v.1982, G.G.E. Scudder (3 ♀, UBCZ); GoogleMaps   Kilimat [54°03′17″N 128°39′28″W],, JGC (2 ♀, CNC) GoogleMaps   ; same data except,, GES (1 ♂, CNC) GoogleMaps   ; King Salmon Lk. , 58°43′N 132°54′W, 15.vii.1960, R. Pilfrey (1 ♀, CNC); GoogleMaps   Kitsumkalum Lk. [54°43′22″N 128°46′34″W], 20 mi N Terrace, 31.v.,, JGC (1 ♂, 1 ♀, CNC) GoogleMaps   ; Kleanza Ck [54°36′05″N 128°24′11″W], 14 mi E Terrace,, 4.vii.1960, CHM (2 ♀, CNC) GoogleMaps   ; same data except, 19.vii.1960, W. R. Richards (2 ♀, CNC); GoogleMaps   same data except,, 4.vii.1960, JGC (1 ♀, CNC) GoogleMaps   ; same data except,, B. Pilfrey (1 ♀, CNC); GoogleMaps   Mission City [49°2′30″N 122°14′41″W], 3 and, W. R.M. Mason (2 ♂, 1 ♀, CNC); GoogleMaps   Mt. Allard , 23 mi N Terrace, 11.viii.1960, CHM 1 ♀, CNC GoogleMaps   ); Mt. Thornhill, nr Terrace [54°30′44″N 128°32′18″W],, 14.vii.1960, JGC (1 ♂, 7 ♀, CNC) GoogleMaps   ; same data except, 14 and 26.vii.1960, B. Heming (1 ♂, 1 ♀, CNC); GoogleMaps   same data except, 14.vii.1960, CHM (1 ♀, CNC) GoogleMaps   ; 8 km E Sicamous [50°53′N 118°54′W], 22.v.1992, AB (1 ♀, CNC) GoogleMaps   ; 24 km NE Sicamous , 19.v.1991, AB (1 ♀, CNC)   ; 13 km SE Port Renfrew [48°30′N 124°18′W], 5.vii.1991, AB (4 ♀, CNC) GoogleMaps   ; Squamish, Diamond Head Tr. [49°45′N 123°03′W], 4000 ft, 28.viii.1953, GJS (1 ♀, CNC); GoogleMaps   same data except GoogleMaps   , 3500 ft, 5.viii.1953, E. Mason (1 ♂, CNC);   10 mi N Terrace, Glacier Ck , 7.vii.1960, JGC (7 ♀, CNC)   ; 32 mi SW Terrace , 4–, GES (2 ♀, CNC)   ; same data except,, R. Pilfrey (1 ♀, CNC); Vancouver Is., Lk . Cowichan, 48°49′N 124°03′W,, J.A. Downes (1 ♀, CNC) GoogleMaps   . Yukon: North Fork Crossing, mi 42 Peel Plateau Rd. [64°27′N 138°17′W], 3500 ft,, PJS (1 ♀, CNC) GoogleMaps   . USA. Alaska: Isabel Pass [63°12′42″N 145°29′17″W], mi 206 Richardson Hwy, 2900 ft,, PJS (1 ♀, CNC); GoogleMaps   Thane [58°15′51″N 134°19′49″W], 1.viii.1952, WCF (1 ♀, WSU); GoogleMaps   White Pass [59°28′47″N 135°15′22″W], 10 mi Skagway, 30.vii.1996, PHA & MA (3 ♀, USNM) GoogleMaps   . Oregon: Benton Co., Mary’s Peak Cpgd, Meadow Edge Tr. , along Upper Parker Ck , 44°30′32.8″N 123°33′36.0″W, 1077 m, 4.vii.2014, JMC (1 ♂, CNC) GoogleMaps   ; Clackamas Co., Mt. Hood NF, Tollgate Cpgd [45°19′21″N 121°54′24″W],, DDW (8 ♀, CAS); GoogleMaps   Clackamas Co. , Bruin Run Ck , Camp Ck Cpgd [45°18′16″N 121°52′02″W],, PHA (2 ♀, CAS) GoogleMaps   ; Clackamas Co., Mt. Hood NF, Still Ck Cpgd , 45°17.703′N 121°44.313′W GoogleMaps   , 1150 m, 9.vii.2013, BJS (1 ♀, CNC)   ; Marion Co., Silver Falls SP, 23 and, PHA (7 ♀, CAS)   ; Marion Co., Willamette NF, French Ck Rd. , 44°45.969′N 122°11.211′W GoogleMaps   , 660 m, 10.vii.2013, BJS (1 ♀, CNC)   . Washington: Clallam Co., Olympic NF, Klahowya SP [48°03′52″N 124°06′41″W], Soleduck R GoogleMaps   .,, PHA (1 ♀, CAS)   ; Clallam Co., Olympic NP   , meadow below Sunrise Ridge, Mt. Angeles [47°59′40″N 123°27′59″W] GoogleMaps   , 1550 m, 22 and 24.vii.1978, DDW (4 ♂, CAS); same data except, Lake Creek, 24.vii.1978 (9 ♀, CAS); GoogleMaps   Clallam Co., Beaver Lk ., 5 km NE Sappho, 48°06′51″N 124°14′40″W,, C.J. Borkent (4 ♀, CNC); GoogleMaps   Clallam Co. , Olympic NP GoogleMaps   , nr. Fairholm Cpgd , 48°04′12″N 123°55′7.5″W,, C.J. Borkent (1 ♀, LEM); GoogleMaps   same data except, CNC161443 View Materials , CNC161444 View Materials , CNC161445 View Materials , CNC161446 View Materials (1 ♂, 3 ♀, barcoded, LEM) GoogleMaps   ; Everett [47°58′45″N 122°12′06″W],, A Spuler (6 ♀, WSU); Everett ,, 4.vii.1924, ALM (1 ♂, 27 ♀, USNM) GoogleMaps   ; Ilwaco [46°18′45″N 124°1′47″W], 5.v.1918, ALM (1 ♀, USNM) GoogleMaps   ; King Co., Seattle, Issaquah [47°32′8″N 122°2′36″W], 23.vii.1988, R. Danielsson (1 ♀, MZLU); GoogleMaps   King Co., 5.5 km W Greenwater, nr Federation Forest SP, Jct Hwy 410 & W-6300, 47°09′28″N 121°43′40″W, 515 m,, C.J. Borkent (1 ♀, LEM); GoogleMaps   Lewis Co., trib. Catt Ck , 2847 ft, 46°41′53″N 121°57′46″W,, JMC (1 ♂, 1 ♀, CNC) GoogleMaps   ; Lewis Co., stream at mi 9 Skate Ck Rd, 2460 ft, 46°43′32.01″N 121°49′51″W,, JMC (1 ♂, 2 ♀, CNC) GoogleMaps   ; Lewis Co., Knuppenburg Lk., 17 km ENE Packwood, Hwy 12, 1260 m, 46°37′46″N 121°24′57″W,, C.J. Borkent (1 ♀, LEM); GoogleMaps   Mason Co. , 16 kmW Lilliwaup, Staircase, Olympic NP, N Fk Skokomish R., 47°31′06″N 123°19′58″W, 280 m,, C.J. Borkent (1 ♀, LEM); GoogleMaps   Mt. Constitution [48°40′39″N 122°49′52″W], 17.v.1910 (2 ♀, UNSM); GoogleMaps   Mt. Baker, Skyline Tr [48°52′51″N 121°51′52″W], 10.viii.1925, ALM (3 ♀, USNM) GoogleMaps   ; Mt. Rainier, Van Trump Ck [46°47′34″N 121°46′33″W],. ix.1917, ALM (1 ♀, USNM) GoogleMaps   ; Mt. Rainier NP, nr Cougar Cpgd [46°46′03″N 121°47′39″W], 8.vii.1989, BJS (2 ♀, CNC) GoogleMaps   ; Mt. Rainer NP, ck nr White River Cpgd [46°54′09″N 121°38′28″W], 1340 m, 3.viii.1977, DDW (2 ♂, CAS); GoogleMaps   same data except, Fish Ck, West Side Rd , 910 m, 1.viii.1977 (4 ♀, CAS); GoogleMaps   same data except, along Sunbeam Ck above Louise Lk. [46°46′16″N 121°43′23″W] GoogleMaps   , 1520 m, 4.viii.1977 (1 ♀, CAS);   Mt. Rainier NP, Narada Falls to Reflection Lk. Tr. , 46°46′N 121°44′W, 1400 m, 17.vii.2012, BJS (1 ♂, 10 ♀, CNC) GoogleMaps   ; same data except, CNC197570 View Materials , CNC197571 View Materials , CNC197572 View Materials (2 ♂, 1 ♀, barcoded, CNC) GoogleMaps   ; same data except, ex. Erythronium montanum   (1 ♂, CNC); GoogleMaps   same data except, Westside Rd nr. Fish Ck , 46°46.743′N 121°53.069′W, 880 m, 4.vii.2013 (1 ♂, 16 ♀, CNC); GoogleMaps   same data except, Stevens Ck Tr. , 46°45.338′N 121°38.530′W GoogleMaps   , 1400 m, 17.vii.2012 (1 ♀, CNC);   Mt. Rainier NP, Longmire Tr., marsh W Inn , 46°44′56″N 121°48′51″W, 850 m,, C.J. Borkent (2 ♀, LEM); GoogleMaps   Olympia [47°2′16″N 122°54′3″W],, ALM (1 ♂, 2 ♀, USNM) GoogleMaps   ; Olympic NP, Sol Due River [47°58′00″N 123°51′28″W], 6.vii.1978, D.E. Hardy (1 ♀, WSU); GoogleMaps   Pluvius [46°32′53″N 123°24′32″W], 10.vii.1917, ALM (1 ♀, USNM) GoogleMaps   ; Tacoma [47°14′29″N 122°27′34″W], 27.v.1917, ALM (1 ♂, USNM) GoogleMaps   ; Vashon [47°24′58″N 122°28′6″W], 28.v.1917, ALM (2 ♂, 11 ♀, USNM) GoogleMaps   . Wyoming: Sheridan Co., Black Mtn [44°44′17″N 107°23′16″W], pine forest, ypans, dung, 5–20.vii.1990, J. Swann (1 ♂, 11 ♀, DEBU); GoogleMaps   Teton Co. , Togowte Pass [43°45′00″N 110°04′48″W], 9000 ft, 22.vii.1953, R. R. Driesbach (1 ♂, CNC) GoogleMaps   .

Possible additional material. USA. California: Placer Co., E end Bear Valley [39°18′34″N 120°39′54″W],, PHA (2 ♀, CAS) GoogleMaps   .

Recognition. This species is distinguished by 4-serial acrostichal setae, thinly pruinescent scutum with dark chaetotaxy, elongate mouthparts, pale legs and features of the male terminalia (hypoproct process extending beyond cercus; narrow, upright surstylus) ( Fig. 48 View FIGURES 45–48 ).

Redescription. Wing length 3.2–3.8 mm. Male ( Fig. 8 View FIGURES 8–10 ). Head dark brown in ground-colour, with pale brown to black setation, occiput thinly to densely greyish pollinose. Eyes holoptic, with upper ommatidia enlarged. Frons represented by small triangular space just above antennae, bare, greyish pollinose. Ocellar triangle prominent, with 2 pairs of long hair-like setae. Postvertical setae subequal to postocular setae, thin; occiput covered with numerous similar setae in lower part, pale brown posterior to mouthparts. Antenna dark brown; scape short, slightly shorter than globular pedicel, both with short setae; postpedicel rather narrow, nearly 4 times longer than basal width, base somewhat expanded and smoothly tapered; stylus ca 3–4 times longer than wide, sensillum-tipped; segment 9 tubular, 2–3 times longer than wide, apical sensillum about as long as segment 9. Proboscis very long, projected obliquely; labium longer than head height; palpus slender, projected parallel to labrum, somewhat shorter than labrum.

Thorax dark brown in ground-colour with posterior part of postpronotal lobe and postalar tubercle often paler, with brown to black setation; scutum viewed dorsally entirely velvety brown, slightly matt, without vittae; viewed anteriorly densely pruinose; mesopleuron uniformly greyish brown pollinose. Proepisternum with a few hair-like setae. Postpronotal lobe with 1 long thin and several shorter setae. Mesonotal setae distinct, thin; acr 4-serial, arranged in 2 pairs of closely spaced irregular rows, lacking on prescutellar depression, distance between paired rows wider than length of acr; dc uniserial (with some additional setulae in anterior part), offset from row anteriorly, slightly longer than 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, 6–7 pairs of sctl.

Legs pale yellow to yellowish brown, coxae and tarsi somewhat darker. Coxae and trochanters with unmodified hair-like setae. Fore femur with row of short anteroventral hair-like setae, especially distinct apically; 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 with row of slightly prominent thin posterodorsal 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 distinctly uniformly pale infuscate; basal costal seta absent; pterostigma distinct brownish, elliptical, overlapping apex of R 1; anal lobe very prominent, acute. Sc complete; R 2+3 often slightly bowed posterior to pterostigma; R 4+5 unbranched; cell dm broad, longer than basal cells, truncate apically; base of M 2 (crossvein) more than one-third length of dm-m, M branches widely separated; dm-m crossvein slightly concave. Apex of cell cua recurved; CuA+CuP long, pale, ending short of wing margin. Halter with brown knob, base of shaft paler.

Abdomen brown, subshiny, finely brownish grey pollinose, basal 4 segments paler; covered with long mostly yellowish setae, setae dark or pale on apical segments. Terminalia ( Fig. 48 View FIGURES 45–48 ) concolorous with abdomen, large. Hypandrium with numerous short setae, rounded basally, narrowed apically with narrow, folded apex, with roughened posterior apex; gonocoxal apodeme long and expanded apically; inner apodeme expanded and flattened, slightly longer than length of gonocoxal apodeme; postgonite long, flattened plate, arched, truncate apically with lateral projection. Phallic guide extended well beyond epandrium, parallel with phallus and bent nearly at right angles subapically; bent apical section paired with jagged or toothed surface apically; apex rounded. Epandrium not inflated laterally; dorsal bridge narrow; produced distally into slender, dorsally projecting, slightly curved surstylus; inner margin of surstylus with short tooth-like projection medially. Phallus slender, arched well beyond epandrium, bent more than right angles subapically; apical section sickle-shaped, tapered and very slender; ejaculatory apodeme plate-like, rounded, greatly expanded anteriorly, nearly twice length of gonocoxal apodeme. Cercus short, triangular, one-third length of epandrium; narrowed apically with apex pointed, extended free from epandrium; hypoproct produced into pair of very long, slender processes, longer than cercus.

Female. Similar to male, except as follows: Eyes dichoptic; ommatidia equally small. Frons very broad, somewhat widened toward ocellar tubercle, shiny to thinly pruinescent, with marginal setulae. Scutum pruinescent. Scutellum pruinose, usually with 5–6 pairs of setae. Legs similar to male. Abdomen with shorter, less prominent pale setae. Cercus brownish, long, slender, covered with brownish setae.

Distribution. Nearctic: Canada (Alberta, British Columbia, Yukon), USA (Alaska, Oregon, Washington, Wyoming). This species is confined to the western Cordillera of North America from Alaska and Yukon to Wyoming, with most records along the northern Pacific Coast Ranges ( Fig. 64 View FIGURES 62–65 ).

Remarks. This species is very similar to I. sierrensis   sp. nov. and I. flavipilosa   in terms of male terminalia, but is distinguished by the different lengths of the phallus and phallic guide and orientation and shape of the surstylus.


Smithsonian Institution, National Museum of Natural History


Gesneriad Research Foundation


Canadian National Collection of Insects, Arachnids, and Nematodes


University of British Columbia, Spencer Museum


Departamento de Geologia, Universidad de Chile


Charleston Museum


Weber State University, Bird and Mammal Collection


Pharmaceutical Society of Great Britain


Real Jardín Botánico


California Academy of Sciences


Museum National Historie Naturelle


Lund University


University of Nebraska State Museum


Ontario Insect Collection, University of Guelph














Iteaphila longipalpis (Melander)

Sinclair, Bradley J. & Shamshev, Igor V. 2021

Anthepiscopus longipalpis: Melander, 1965: 455

Melander, A. L. 1965: 455

Anthepiscopus longipalpis

Melander, A. L. 1928: 106