Iteaphila macquarti Zetterstedt

Sinclair, Bradley J. & Shamshev, Igor V., 2012, 3561, Zootaxa 3561, pp. 1-61 : 17-23

Iteaphila macquarti Zetterstedt

( Figs. 1A, 2A, C, 3A, 6E, 7, 12B)

Iteophila macquarti Zetterstedt, 1837: 31 , nomen nudum.

Iteaphila macquarti Zetterstedt, 1838: 541 . Type locality: “Naes in Werdalen Norvegiae” [ Norway] [after lectotype designation].

Empis geniculata Zetterstedt, 1842: 375 . Type locality: “Suecia super” [ Sweden].

Hilara transfuga Walker, 1849: 491 . Type locality: St. Martin’s Falls, Canada; Smith, 1971: 354.

Empis cormus Walker, 1849: 496 . Type locality: St. Martin’s Falls, Canada; Smith, 1971: 354. syn. nov.

Steleocheta setacea Becker, 1887: 130 . Type locality: not given [ Switzerland, St. Moritz].

Iteaphila curva Curran, 1925: 24 . Type locality: Nain, Labrador, Canada; Tuomikoski, 1958: 130.

Iteaphila cana Melander, 1946: 33 . Type locality: Edmonton , Alberta, Canada. syn. nov.

Iteaphila fuliginosa Melander, 1946: 34 . Type locality: Seattle , Washington, USA. syn. nov.

Type material examined. Iteaphila macquarti : LECTOTYPE (here designated), ♂ labelled: “ I. macquarti / ♂. Naes Boh. [= Boheman] [white label, in Zetterstedt’s writting]”; “ Lectotypus / Iteaphila / macquarti / Z. 1838/ design. 2004/ I. Shamshev & R. Danielsson [red, hand-written]”; “ Empididae , Type no. 3028: 1–8, Zool. Mus. Lund Sweden ” ( MZLU).

Empis geniculata : HOLOTYPE, ♀ labelled: “[very small green square label] E. geniculata . / ♀. a Marklin [white, in Zetterstedt's writing]; Empis geniculata Zetterstedt, 1842 / = Iteaphila / det. M. Chvála, 1992 /prope. I. macquarti Zett. [white, hand-written by M. Chvála]; Holotypus / Empis / geniculata / Z. 1842/ design. 2004/ I. Shamshev [red, hand-written]; Empididae , Type no. 3029: 1, Zool. Mus. Lund Sweden ( MZLU).

Steleocheta setacea : HOLOTYPE, ♀ labelled: “ Steleocheta / setacea / Beck./ 11264 [hand-written]”; “ St. Moritz / 11264. VII. [hand-written]”; “ Typus [red]” ( ZMHB).

Iteaphila curva : HOLOTYPE, ♂ labelled: “ HOLOTYPE / Iteaphila / curva/ Curr./ CNC No./ 1279”; “Nain. Labr./ 15.vi.1922 / Waugh” ( CNC).

Iteaphila cana : LECTOTYPE (here designated), ♂ labelled: “Edmonton, Alta./ 26 IV 1931 / E.H. Strickland ”; “ HOLOTYPE / Iteaphila / cana Mel. [red label]”; “ALMelander/ Collection”; “ LECTOTYPE / of Iteaphila / cana Mel. / des. B.J. Sinclair 2011” ( USNM) . PARALECTOTYPES: same data as lectotype (1 ♀, CNC, 1 ♀, CNC) [= Iteaphila bulbosa sp. nov.]; Fawcett , Alberta. 8.v.1934, R. H. Strickland (1 ♀, USNM) [= Iteaphila bulbosa sp. nov.] .

Iteaphila fuliginosa : HOLOTYPE, ♂ labelled: “Seattle Wash/ 5 20 02”; “ Anthalia ”; “ HOLOTYPE / Iteaphila / fuliginosa/ Mel. [red label]”; “ALMelander/ Collection” ( USNM) . PARATYPES: USA. Oreogon: Mary’s Peak , 8.iii.1926, D.A. Wilbur (1 ♂, USNM) . Washington: O.B. Johnson (4 ♂, USNM) .

Taxonomic notes. Zetterstedt (1838) described I. macquarti after several specimens collected in different localities in Sweden, Norway and Finland (e.g., “ Lapponia Suecia, Nordlandiae Finmarkiae ; Bjōrkvik juxta Ofotenfjord ad Naes in Werdalen Norvegiae , alpinum Tornensium , Lapp. Bottnia bor., Johanis Ro ”). Among the syntypes a male was separated that we have designed as the lectotype and additionally, we designated seven specimens as paralectotypes.

Zetterstedt (1842) described Empis geniculata after a single female specimen. The synonymy was proposed by Tuomikoski (1958) and confirmed here.

Becker (1887) described Steleocheta setacea after a single female specimen. The synonymy was proposed by Tuomikoski (1958) and confirmed here.

Smith (1971) examined the Walker Empididae types and assigned Hilara transfuga as a synonym of I. macquarti . We confirm this decision based on the illustration of the male terminalia of the former species ( Smith 1971, fig. 6). Smith (1971) maintained I. cormus as a distinct species on the basis of the shiny female frons. But on the basis of the infuscated wing veins ( Smith 1971, pl. 1: fig. 9) it is herein assigned as a junior synonym of I. macquarti . Melander (1946: 34) states that C.W. Johnson identified material from Mt. Washington (in USNM) as I. cormus and these females are also definitively I. macquarti .

Melander (1946) described I. cana based on one male and three female syntypes. Holotype and paratype labels were added subsequent to the publication as no holotype was originally designated. Since the description is based on the male, this specimen was labelled as the lectotype accordingly, to fix and stabilize the current concept of the name. This was especially important since the female syntypes, although dirty are clearly I. bulbosa sp. nov. based on the brownish scutellar setae.

The designation of the lectotypes clearly establishes the identity of these species.

Additional material examined. CANADA. Alberta: Banff , 25.v.-2.vi., 20.vii.1922, C.B.D. Garrett (17 ♀, CNC, USNM) , ditto, 25.vi.1925, O. Bryant (1 ♀, CAS) ; Banff , 29.v.1924, E. Hearle (1 ♂, CNC) ; Banff , 4455 ft, roadside, 26.v.1960, R. J. Pilfrey (2 ♀, CNC) , ditto, Sunshine Lodge , 7500 ft, 9.vii.1962, W. R. M. Mason (2 ♂, 3 #, CNC) ; Banff NP, 12–17.vii.1955, R. Coyles (8 #, 16 ♀, CNC) , ditto, Larch valley , 7.vii.1965, F. Schmid (1 ♂, 5 ♀, CNC) , ditto, Mt. Eisenhower , on Salix , 2–17.v.1968, Mosquin & Seaborn (331 ♂, 168 ♀, CNC) , ditto, Mt. Norquay , 25.v.1960, JGC (1 ♂, CNC) , ditto, Peyto Lookout , 8000 ft, 23.vii.1962, K.C. Hermann (3 ♀, CNC) , ditto, Snow Ck Pass , 7400–7600', 24.vi.1962, K.C. Herrmann, W. R. M. Mason (13 ♂, 5 ♀, CNC) , ditto, Victoria Glacier , 6000-6500 ft, 18.vii.1955, R. Coyles (1 ♀, CNC) ; Banff-Jasper Hwy, Sunwapta Pass , 6600 ft, 9.vii.1955, R. Coyles (1 ♂, CNC) ; Edmonton, U of A Ecol. Res., MT, 13–22.v.1986, B. V. Brown (1 ♂, CNC) ; Elkwater , 49°42'N 110°16'W, 29.v.1955, JRV (3 ♀, CNC) ; 8 kmW Lk Louise , 31.v.1992, AB (5 #, 1 ♀, CNC) ; Seebe , 23.iv.1949 (3 ♂, CNC) ; Waterton Lakes NP, Cameron Lk , 17–18.vi.1956, O. Peck, E.E. Sterns (20 ♂, 5 ♀, CNC) . British Columbia: Agassiz , 10–12.iv.1926, R. Glendenning (2 ♀, CNC) ; 831 km Alaska Hwy “ Whirpool Canyon ”, 9.vi.1996, PHA & M.M. Arnaud (2 ♀, USNM) ; Alaska Hwy, truck bugscreen between Prophet River PP & Muncho Lk , 7.vi.1996, PHA & M.M. Arnaud (7 ♂, 11 ♀, USNM) ; Atlin , 2200-4800 ft, 5– 24.vi.-16.vii.1955, B.A. Gibbard, H. Huckel (3 ♂, 7 ♀, CNC) ; Buckinghorse River PP, 279 kmN Dawson , on Salix , 6.vi.1996, PHA & M.M. Arnaud (19 ♀, USNM) ; Cathedral PP, Glacier Lk, 7.vii.1986, R. A. Cannings (2 ♂, 1 ♀, RBCM) ; Clinton , 19.vi.1938, G.S. Walley (1 ♀, CNC) ; Cranbrook , 17.v.1922, C.B.D. Garrett (1 ♀, CNC) ; Englewood , 20.iv.1952, H.A. Magel (1 ♂, UBCZ) ; 4 km E Kingfisher , 50º36.92'N 118º40.801'W, flowers of Shepherdia , 11.iv.2010, AB (10 ♂, 2 ♀, CNC) ; Galena Bay , 3.v.1964, P. Wilkinson (1 ♀, CNC) ; Galiano Is, Spanish Hills , 8.iv.1979, 30.iii.1980, 8.ii.1981, G.G.E. Scudder (4 ♂, 2 ♀, UBCZ) ; Glacier NP, Rogers Pass , 30.vi.1968, W.W. Wirth (9 ♂, 12 ♀, USNM) ; Kleanza Ck, 14 miE Terrace , 17.vi.1960, CHM (1 ♀, CNC) ; Kootenay NP, Daer-Pitts Aspen Burn 1 & 2, MT, 25.vi.-9.vii.2000, G. Gareau (2 ♀, CNC) ; Laird R Hotspings , 24.v.1981, L. Vashington, S.G. Cannings (1 ♀, UBCZ) ; Laval Lk, 50 miN Terrace , 31.v., 14–30.vi., 8.vii.1960, JGC, CHM, R. Pilfrey (6 ♀, CNC) ; Lisadale Lk , 58°41'N 133°04'W, 4000 ft, 9–11.vii., 6.viii.1960, WWM (7 ♂, 6 ♀, CNC) ; Manning Pk, Dry Ridge summit, 1830 m, 25.vi.1983, S.G. Cannings (1 ♀, UBCZ) ; Manning Pk, Lightning Lk , 16.v.1969, M.J. Hale (3 ♂, RBCM) ; Moosehorn Lk , 58°10'N 132°07'W, 26–29.vii.1960, on flowers of Heracleum lanatum, R. Pilfrey, WWM (2 ♀, CNC) ; Mt. Revelstoke NP, 5400–6300 ft, 3–25.vii.1952, G.P. Holland, GJS (1 ♂, 28 ♀, CNC) ; Mt. Thornhill, nr Terrace , nr summit on snow 4500 ft, flowers of Aruncus sylvestris , 21.vi.1960, JGC, R. J. Pilfrey (6 ♂, 4 ♀, CNC) ; Pleasant Camp , 3.8 mi N, 2.vi.1981, CSG (2 ♂, 38 ♀, UBCZ) ; Prince Rupert , 20–23.iv.1933, M.E. Hippisley (2 ♂, USNM) ; Salmon Arm , 2.v.1991, 31.iii.1992, AB (4 ♂, 2 ♀, CNC) ; 3 kmE Salmon Arm , 4.v.1992, AB (10 ♀, CNC) ; 11 kmSW Salmon Arm , 28.v.1992, AB (22 ♂, 2 ♀, CNC) ; Seltat Ck , 28.v.1979, G.G.E. Scudder (1 ♀, UBCZ) ; 8 kmE Sicamous , 8.vi.1992, AB (5 ♂, 11 ♀, CNC) ; Sooke, Camp Bernard , 9.iv.1988, CSG (1 ♂, RBCM) ; South Fork Ck , 11.viii.1903, R. P. Currie (1 ♀, USNM) ; Summit Lk, mi 392 Alaska Hwy , 4200 ft, 13.vi.-1.vii.1959, E.E. MacDougall, R. E. Leech (23 ♂, 105 ♀, CNC) ; Summit Lake PP, Cpgd , 29.v.1997, T. A. Wheeler (1 ♀, LEM) ; Terrace , 1–14.iv.1933, M.E. Hippisley (2 ♂, USNM) ; Toad R, mi 440 Alaska Hwy , 4500 ft, 19.vi.1959, E.E. MacDougall (1 ♂, 1 ♀, CNC) ; Tunjony Lk , 58°26'N 132°45'W, 3200 ft, 19.vii.1960, R. Pilfrey (3 ♀, CNC) ; UBC, 18–21.iv.1955, B.A. Hardy (4 ♂, UBCZ) ; Vancouver, Lions Bay , 22.v.1961, GJS (1 ♀, UBCZ) ; Vancouver, Point Grey , 17–30.iii.1973, JRV (3 #, 1 ♀, CNC) ; Vancouver , 7, 24.iii.1906, 28.iii., 9.iv.1915, 8.v.1921 (2 ♂, 1 ♀, UBCZ; 2 ♀, USNM) ; White Rock , 9.iii.1973, JRV (1 ♂, CNC) . Manitoba: mi 505 Hudson Bay Railway, 13.vi.1952, JGC (2 ♀, CNC) ; Churchill , 14.vi.1947, C. R. Twinn (1 ♂, CNC) ; Churchill , 17–25.vi.1948, GES (14 ♂, 84 ♀, CNC) ; Churchill Area, Burn site N of Twin Lks, 58˚37'07''N 93˚49'44''W, 26.vi.2007, J. Skevington (1 ♀, CNC) ; Churchill Area, Burn site S of Twin Lks, 58˚36.92'N 93˚49.33'W, 11–15.vii.2009, J.M. Cumming (1 ♀, CNC) ; Churchill Area, Ramsay Lk Ck , 58˚43.94'N 93˚46.86'W, 13.vii.2009, J.M. Cumming (2 ♀, CNC) ; Churchill Area, Twin Lks, road along Kame , 58˚37.94'N 93˚47.66'W, 8.vii.2009, J.M. Cumming (1 ♀, CNC) ; Fort Churchill , 3–28.vi.1952, C.D. Bird, JGC (7 ♂, 13 ♀, CNC) , ditto Eastern Ck , 9.vii.1952, JGC (1 ♀, CNC) , ditto, Farnworth Lk , 12.vi.1952, JGC (1 ♀, CNC) , ditto, Warkworth Ck , 10.vi.1952, C.D. Bird (1 ♀, CNC) . New Brunswick: Fredericton , on A. piceae , 11.v.1959, N. R. Brown (1 ♂, CNC) ; Fredericton , 6.v.1935, C.E. Atwood (1 ♂, ROM) ; Kouchibouguac NP, 12–24.v.1977, J.D. Lafontaine, W.P. Hanley, BEC, S.J. Miller, G.A. Calderwood (7 ♀, CNC) ; St. Andrews , 20,22, v.1978, SAM (1 ♂, 1 ♀, DEBU) . Newfoundland & Ladrador: Cartwright , 24.vi.-12.vii.1955, E.F. Cashman, E.E. Sterns (2 ♂, 19 ♀, CNC) ; Goose Bay , 10.vi.1948, W.W. Judd (1 ♀, CNC) , ditto, 26–28.v.1950, J.J. Tibbles (3 ♂, 1 ♀, CNC) ; Nain, Anatalak Bay, Rawson-MacMillan Exped. , 1–17.vi.1928, A.G. Weed (1 ♀, FMNH) . Northwest Territories: Aklavik , 5–22.vi.1931, O. Bryant (27 ♂, 40 ♀, CAS) ; Bathurst Inlet , 28–30.vi.1951, W.I. Campbell (4 ♂, CNC) ; Muskox Lk , 64°45'N 108°10'W, 12.viii.1953, JGC (1 ♀, CNC) ; Norman Wells , 16–25.v.1953, C.D. Bird, J.S. Waterhouse (1 ♂, 4 ♀, CNC) ; Reindeer Depot, Mackenzie Delta , 26–27.vi.1948, JRV (4 ♂, 3 ♀, CNC) ; Salmita Mines , 64°05'N 111°15'W, 16–19.vi.1953, JGC (2 ♂, 12 ♀, CNC) ; Sawmill Bay , 23.vi.1948, D.F. Hardwick (1 ♀, CNC) ; Wrigley , 7.vi.1969, GES (3 ♀, CNC) ; Yellowknife , 16.v.- 1.vi.1953, JGC (4 ♀, CNC) . Nova Scotia: Cape Breton Highlands NP, QG 038793, 5.vi.1984, BEC (4 ♀, CNC) , ditto, Mackenzie Mtn , 400 m, PG639848, 2.vi.1984, BEC (1 ♀, CNC) , ditto, Pleasant Bay , PG682873, 5–7.vi.1984, BEC (2 ♀, CNC) ; Queens Co., Greenfield , 10–13.v.1968, DMW (1 ♀, CNC) . Nunavut: Hayes River , 3.vi.1951, P. R. Ehrlich (1 ♀, CNC) ; Padlei , 30.vi.-18.vii.1950, R. A. Hennigar (5 ♂, 3 ♀, CNC) . Ontario: Algonquin PP, Petawawa / Lk Traverse , 22.iv.2007, BJS (3 ♂, 1 ♀, CNC) ; Algonquin PP, 4.vi.1989, J. Skevington (1 ♀, DEBU) ; Algonquin PP, Swan Lk Stn, Scott Lake Survey , 45°29'15''N 78°43'20''W, MT A1 , lakeshore, 8–18.v.1993, Larson, SAM, Barr (1 ♂, DEBU) ; Chalk River , on Salix catkins, 26.iv.1953, J.F. McAlpine (4 ♂, CNC) ; Cobden , 7.v.1957 (1 #, CNC) ; Dirleton , 29.iv.1968, J.E.H. Martin (1 ♂, 2 ♀, CNC) ; Lake Abitibi, Low Bush , 8.vi.1925, N.K. Bigelow (1 ♀, CNC) ; Maynooth , 6.v.1963, J.E.H. Martin (1 ♂, 1 ♀, CNC) ; Nakina , 6.vi.1947, W.Y. Watson (1 ♀, ROM) ; Quibell , 4.v.1983, D.B. Stoltz (3 ♂, DEBU) ; same data, 5.v.1959, E.A. Cameron (1 ♂, 3 ♀, DEBU) ; Shakwa Lk, Ouellette Twp , 21.v.1996, A. Applejohn (1 ♀, DEBU) ; Toronto , v.1885, I.C. W (2 ♂, 1 ♀, ROM) ; Wabos , 5.v.1984, D. Poirier (3 ♂, 3 ♀, DEBU) . Quebec: Fort Chimo , 19.vi.1948, H.N. Smith (1 #, CNC) ; Gatineau Co., Duncan Lk , 45°40'53''N 76°03'01''W, 2.v.2001, DMW (2 #, CNC) ; Gatineau Pk, Harrington Lk , 30.v.-3.vi.1954, J.E.H. Martin, E.E. Sterns (2 ♀, CNC) ; Great Whale R, 17–20.vi.1949, JRV (2 ♀, CNC) ; Indian House Lk, 9.vii.1954, W. R. Richards (1 ♀, CNC) ; Lac Mondor, Ste. Flore , 15-17.v.1951, E.G. Munroe (1 #, 12 ♀, CNC) ; Masham Twp. , Gatineau Co., 21.iv.1973, 16–19.iv.1976, DMW (2 #, 1 ♀, CNC) ; Mistassini Post , 13–16.vi.1956, J. R. Lonsway (3 ♀, CNC) ; Mt. Albert , 20.vi.1954, G.P. Holland (1 ♀, CNC) ; Payne Bay , 25.vii., 2.viii.1958, W. R. M. Mason (2 ♀, CNC) ; Rupert River , 19.vi.1956, J. R. Lonsway (1 ♀, CNC) ; Seven Is. , 8.vi.1929, W.J. Brown (2 ♀, CNC) ; Schaefferville, Iron Arm Fern , 21.vi.1990, P. McElligott (1 ♂, LEM) . Saskatchewan: Cypress Hills , 26.v.1955, JRV (7 ♂, 13 ♀, CNC) . Yukon: mi 687 (1144 km) Alaska Hwy, Rancheria Cpgd , at catkin Salix sp. , 10.vi.1996, PHA & M.M. Arnaud (2 ♀, USNM) ; mi 752 (1250 km) Alaska Hwy, Morley R Rec. Site , at catkin Salix sp. , 11.vi.1996, PHA & M.M. Arnaud (4 ♂, 26 ♀, USNM) ; Alaska Hwy , km 1666, ca. 0.25 mi W Jarvis R., 60°56'N 137°53'W, in bog, 7.vi.1979, #791005a. ROM Fld Pty (1 ♀, ROM) ; British Mts , 69°13'N 140°05'W, 320 m, 18–20.vi.1984, D. Lafontaine, G. Wood & DMW (1 ♂, 2 ♀, CNC) ; 34 miW Dawson, Swede Dome , 3900', 6.vi.1962, R. E. Leech (1 ♂, 2 ♀, CNC) ; mi. 51 Dempster Hwy , 17–21, 25–27.vi.1973, G. Wood & DMW (8 ♂, 20 ♀, CNC) ; mi 91 Dempster Hwy , 6.vi.2003, AB (9 ♂, 5 ♀, CNC) ; Jeff Ck, 8 kmW Fuller Lk , 62º59'N 130º26'W, 10.vi.1981, CSG (2 ♀, UBCZ) ; Jarvis R, km 1665 Alaska Hwy , on willow, 60°56'N 137°53'W, 7.vi.1979, J.A. Downes (11 ♀, CNC) ; Johnson’s Crossing , 10 mi N, 6.vi.1981, CSG (8 ♂, 11 ♀, UBCZ) ; Klondike Hwy, km 12, Ethel Lake Rd, 63°19'N 136°21'W, 30.vi.1980, #800067d. ROM Fld Pty (2 ♀, ROM) ; Macmillan Pass , 10.vi.1981, CSG (1 ♂, 5 ♀, UBCZ) ; km 158, Nahanni Range Rd , 25.vi.1985, E. Krebs & J.J. Robinson (1 ♀, UBCZ) ; North Fork Crossing, mi 42 Peel Plateau Rd. , 3500', 24–25.vi.1962, PJS (7 ♀, CNC) ; North Fork Pass, Ogilvie , 4100–4300', 12–19.vi.1962, R. E. Leech, PJS (39 ♂, 144 ♀, CNC) ; Orchie Lk, 3 km N, N Canol Rd , 62º11'N 131º48'W, 11.vi.1981, CSG (3 ♀, UBCZ) ; Quiet Lk , 6.vi.1981, CSG (1 ♂, 1 ♀, UBCZ) ; Rampart House , 20.v.-5.vi.1951, J.E.H. Martin, C.C. Loan (17 ♂, 47 ♀, CNC) ; Swim Lakes , 133˚ 62˚13', 3200', 10.vi.1960, E.W. Rickburne (1 ♀, CNC) ; Whitehorse , 12.vi.1949, 25.v.1953, C.D. Bird, B. Hocking (3 ♂, CNC) ; Windy Pass , 65°04'N 138°15'W; 10–14.vi.1987, J. & L. Troubridge (2 ♀, CNC) . FINLAND. Kilpisjävi lake, Saana Mt. env., 9.vii.1992, tunturi, B. Mocek (1 ♀, BARC) ; Kuusamo, J.E. Aro (1 ♂, CHVC) . ITALY. Mörzil , 18.vi, 42713 (1 ♀, ZMHB) ; Rolle-Pass , 20.vi.1890, 25631 (1 ♀, ZMHB) . MONGOLIA. Khövsgöl, Aimag: Alag Tsar River , 29 km ENE Khatgal, 50°26'26''N 100°23'30''E, 1693 m, 12.vi.1996, J. Gelhaus No. 714, E. Hunter (7 ♀, ANSP) ; Khövsgöl, Aimag: Borsogiyn gol [river], 50°55'32''N 100°43'19''E, 1640 m, 14.vi.1996, J.K. Gelhaus No. 716, E. Hunter (1 ♀, ANSP) ; Khövsgöl, Aimag : S of Dalbayn Khyr, 50°59'22''N 100°43'01''E, 1695 m, 14.vi.1996, J.K. Gelhaus et al. No. 719 (1 ♀, ANSP) ; Khövsgöl, Aimag : Khövsgöl Nuur [lake] area, E side, Noyon gol [stream], 51 km S Khankh, 51°12'11''N 100°47'41''E, 1669 m, 18.vi.1996, J.K. Gelhaus No. 725, B. Namkhaidorj et al (2 ♀, ANSP) ; Khövsgöl, Aimag : Khövsgöl Nuur [lake] area, E side, Sevsuuliyn gol [river], 58 km S Khankh, 51°09'42''N 100°45'21''E, 1626 m, 17–18.vi.1996, J.K. Gelhaus No. 724, B. Namkhaidorj, E. Hunter et al. (1 ♀, ANSP) ; Urga [= Ulan Bator or Ulaanbaatar, 47°55'N, 106°55'E], 22.v.1925, Kozlov (1 ♀, ZIN) ; Ravine Sutszukte , SW Kentey [about 48°34'N, 110°42'E], 12–28.v.1925, Kozlov (1 ♀, ZIN) ; same locality, 1–5.vi.1925 (1 ♀, ZIN) . NORWAY. Kongsvoll , 9–1100 m, 12–20.vi.1985, O. Karsholt & V. Michelsen (2 ♂, 1 ♀ 3, NHRS) ; Troms. Kvaenangsfj. , 3.vii.1956, 52 Rished, reg. alp., H. Andersson (1 ♀, MZLU) . RUSSIA. Altay Republic: Shamshev & Barkalov, 2009 . Amur Prov.: Zeya , 24.vi.1982, M. Krivosheina (1 ♀, ZMMU) . Arkhangelsk Prov.: Ekaterininsky Island [about 69°11'N, 33°27'E], 1.vi.1908, L. V. Bianki (1 ♂, ZIN) ; same locality, 9.vi.1908 (1 ♀, ZIN) ; same locality, 29.vi.1908 (1 ♀, ZIN) . Chita Prov.: Transbaicalia [52°02'N, 113°30'E], 22.v.1920, Redikortseva (1 ♀, ZIN) ; same locality, 1.vi.1920 (1 ♂, ZIN) . Khabarovsk Terr.: Bolshoy Shantar Island, valley of Yakshin River [55°05'N, 137°35'E], 30.v.1926, Dul'keyt (2 ♂, ZIN) . Magadan Prov.: Magadan [59°34N, 150°48E], 16.vi.1963, Zhelokhovtsev (2 ♂, ZMMU) ; basin of Arma R, Mukul'chak R tributary of Iganja , 102 km of Palatka [about 60°10N, 150°94E], larch forest, 2.vii.1971, Gorodkov (1 ♂, 1 ♀, ZIN) . Murmansk Prov.: Kola Peninsula, Pulozero, Arkangel'skya gubernia [68°20'00"N, 33°17'00"E], 10.vi.1926, Kapustin (3 ♀, ZIN) ; same locality, 14.vi.1926 (6 ♀, ZIN) ; Vudyavr Lake, Khibiny, Kola Peninsula [67°37'50"N 33°40'15"E], 12.vi.1930, Fridolin (1 ♂, 2 ♀, ZIN) ; same locality, 14–21.vi.1930 (12 ♂, 5 ♀, ZIN) ; same locality, 24.vi.1930 [one wing without radial fork] (1 ♂, ZIN) ; same locality, 7–29.vi.1931 (20 ♂, 11 ♀, ZIN) . Tyumen' Prov. (Khanty-Mansy Autonomous Okrug—Yugra): Kondinskoe [59°39'N, 67°24'E], 8.vi.1925, Fridolin (1 ♂, ZIN) . Berezov [= Berezovo, 63°56'00"N, 65°03'00"E], 10.vi.1925, Fridolin (1 ♂, ZIN) . Obdorsk [= Salekhard, Yamal-Nenets Autonomous Okrug], Ob'—Malaya Khanema R, tundra [about 66°32'N, 66°38'E], 18.vi.1925, Fridolin (2 ♀, ZIN) ; same locality, 24.vi.1925, Fridolin (1 ♀, ZIN) ; same locality, 27.vi.1925, Fridolin (7 ♂, 6 ♀, ZIN) ; same locality, 4.vii.1925, Fridolin (1 ♂, ZIN) . Yakutia: env. Yakutsk [62°02'N, 129°42'E], 23.v.1927, Nikiforov (1 male, ZIN) ; same locality, 9.vi.1927, Moskvin (4 ♀, ZIN) ; Khaptagay [61°47'N, 129°47'E], on Salix , 21.v.1973, Bagachanova (1 ♂, ZIN) ; Kolyma, Nizhnie Kresty [= Cherskiy, 68º46'06''N, 161º19'47''E], 26.vi.1963, Gorodkov (1 ♂, ZIN) ; Oktemtsy , 50 km SSW of Yakutsk, 26.v.1977, Maksimov (1 ♀, ZIN) ; same locality, 1.vi.1977 (1 ♀, ZIN) . SLOVAKIA. Vysoké Tatry, Slezský dom, 29.v.1968, M. Chvála (2 ♀, CHVC) . SWEDEN. Abisko , 30.vi.1932, J.C. Bradley (2 ♀, CUIC) ; Abisko am Torneträsk , 10.vi.1937, W. Brandt (1 ♀, CHVC) ; Abisko, Lpl , vii.1950, 13–27.vi., 6.vii.1951, JRV (34 ♂, 62 ♀, CNC) ; Dlr. Floda, Sångån , 15.v.1971, T. Tjeder (1 ♀, MZLU) ; Dlr. Floda, Sångtorpet , 1–11.v.1971, T. Tjeder (3 ♀, MZLU) ; Dlr. Idre , 6.v.1934, G. Sthen (1 ♂, MZLU) ; Dlr. Leksand, Sångån , 25.v.1975, T. Tjeder (2 ♀, MZLU) ; Dlr. Ore, Bruket , 14.v.1974, T. Tjeder (1 ♀, MZLU) ; Åre , vi. 42958 (3 ♀, ZMHB) ; Ås. Lpm., Borkajaure, 1.5 km. 7 km WNW Kittelfjäll ESE Borkan. Lok. 3. 28.vi.1967, Brinck, Enckell (1 ♀, MZLU) ; Ås. Lpm., Vojmån , 11 km E Kittelfjäll. Lok. 1. 28.vi.1967, Brinck, Enckell (1 ♀, MZLU) ; Dlr. Leksand , 26.v.1976, T. Tjeder (2 ♀, MZLU) ; Dlr. Leksand, Sångån , 18,25.v.1974, 25.v.1975, T. Tjeder (1 ♂, 1 ♀, CHVC; 1 ♂, 8 ♀, MZLU) ; Lu. Lpm. Niakajokk. 6 km NO Kvikkjokk , 2.vii.1959, Brinck, Cederholm, Wingstrand (1 ♀, MZLU) ; Ly. Lpm., Vapstälven, 1 km E Nedre Vapstsjön. Lok. 18. 37 km NW Kittelfjäll, 30.vi.1967, Brinck, Enckell (1 ♀, MZLU) ; N.B. Vittjärv, 30.v.1936, Y. Melander (1 ♀, MZLU) ; Nb. Boden, S.O. Ulefors (1 ♂, MZLU) ; T. Lpm. Abisko, loc. 1 Abiscodalen , 25.vi.1957, P.I. Persson (1 ♂, CHVC) ; N. of Kiurna, 13:00–13:10 pm, ex. truck trap, P.H. Adler (3 ♀, ZFMK) ; Sikselberg, Lycks Lpm. , 20.v.1943, K.J. Hequist (1 ♀, MZLU) ; To Krokvik , 500 m, 20.vi.1994, Huber (1 ♀, OLML) ; Sarek, B. Poppius (1 ♂, 1 ♀, ZMH) ; T. Lpm. Abisko , 11–22.vi.1954 ; J.E. & R.B. Benson (1 ♂, 1 ♀, MZLU) ; T. Lpm Abisko, loc. 4, Nuoljatunneln 14.vii.1958, P.I. Persson (1 ♀, MZLU) ; T. Lpm. Abisko , 3.vii.1957, P.I. Persson (1 ♀, MZLU) ; T. Lpm. Kaisepakte , loc. 5, 24.vi., 15.vii.1957, P.I. Persson (2 ♀, MZLU) ; T. Lpm., SE Övre Kilpisjärvi, Salmiåive, 29.vi.1961, Lok. nr. 33, Brinck, Askaner, Cederholm, Ulfstrand (2 ♀, MZLU) ; T. Lpm. Stordalen , loc. 2, 26.vi., 8.vii.1957, P.I. Persson (4 ♀, MZLU) ; Torne Lappmark, Selkavaara , 68°27'N 20°47'E, 16.vi., 12–13.vii.1955; Birch wood, marsh; J.P.S. Pringle (1 ♂, 3 ♀, MZLU) ; To. Abisko, Kungsleden vid Abiskojokk , 23.vi.1985, T. Mireström (1 ♀, MZLU) ; Troms. Kvaenangsfj. , 3.vii.1956, 52 Rished, reg. alp., H. Andersson (1 ♀, MZLU) . USA. Alaska: Anchorage , 25.v.-5.vi.1951, R. S. Bigelow (3 ♂, 3 ♀, CNC) ; Anchorage, Chugach Mt. , 2500 ft, Salix catkins, 30.v.1948, Sailor & Somerman (4 ♂, USNM) ; Chitina , 22.v., 2.vi.1953, W.C. F. (1 ♂, 2 ♀, WSU) ; mi. 32 Denali Hwy , 4500 ft, 22.vii.1962, R. E. Leech (1 ♀, CNC) ; Glenn Allen , 30.v.1949, W.C. F. (1 ♂, USNM) ; Hurricane , 18.vi.1921, J.M. Aldrich (1 ♀, USNM) ; Kenai NWR, 2 km N Indian Ck, 3100 ft, 18.vi.2004, J. Lewis (1 ♂, UAM) ; Kenai NWR, 0.5 mi NW Benjamin Ck, 3.5 mi NE Killey R, 13.vi.2006, A. Wu (1 ♀, UAM) ; Kenai Penninsula , Mystery Hills, N 60°31.798' W 150°9.466', 2.vi.2001, E. Stanley (1 ♂, 1 ♀, UAM) , same locality, N 60°31.603' W 150°10.820', on anthers of Salix , 2.vi.2001, M.L. Bowser (2 ♀, UAM) ; Matanuska, Rotary tp, 27.iv.-15.v.1944, J.C. Chamberlain (110 ♂, 118 ♀, USNM) ; Mt. McKinley NP, 11.vi.1931, F.W. Morand (4 ♂, USNM) ; Naknek , AFB, 11.v.1954, W.C. F. (1 ♂, WSU) ; Palmer , 30.iv.-26.v.1950, 10.v.1951, R. H. Washburn (2 ♂, 4 ♀, USNM) ; mi. 206 Richardson Hwy, Isabel Pass , 5000 ft, 17.vii.1962, REL (1 ♀, CNC) ; mi 213 Richardson Hwy , 17.vi.1951, J. R. McGillis (3 ♀, CNC) ; Richardson Hwy, Black Rapids , 2.vi.1951, W. R. M. Mason (3, CNC) ; Savonoski, Naknek Lk , 4.vii.1919, Katmai Exped., A.J. Basinger (1 ♀, CAS) ; Skagway, White Pass Tr , 5,18. v.1923, J.A. Kusche (1 ♂, 8 ♀, CAS) ; Taylor Hwy, Walker Fork Cpgd , 18.vi.1996, PHA & M.M. Arnaud (1 ♀, USNM) ; Tonsina , 27.v.1954, W.C. F. (5 ♂, CNC, USNM) ; Valdez , 16.vii.1949, W.C. F. (1 ♀, USNM) . California: Mono Co., Tioga Pass , Salix orestera , 11.vii.1969, A. R. Moldenke, Nos 1999, 2014 (2 ♀, CAS) . Colorado: Carbonate to Prairie Hills Br , 12–18.vii.1908, J.C. Bradley (1 ♀, USNM) ; Gunnison Co., Spring Ck Cpgd , 6 mi N Almont, 5.vi.1992, JFM (6 ♂, 32 ♀, CNC) ; Mt. Evans, Doolittle Ranch , 9800 ft, 8.vii.1961, CHM (4 ♀, CNC) , ditto, Echo Lk , 10600 ft, 13.vii.1961, CHM (2 ♀, CNC) , ditto, Timberline , 11600 ft, 11,22. vii.1961, CHM, BHP (2 ♀, CNC) ; Nederland, Science Lodge , 9500 ft, 28.vi.-3.vii.1961, CHM, BHP (2 ♂, 2 ♀, CNC) ; Niwot Ridge nr. Ward , 11700 ft, 28.vi-4.vii.1961, CHM, W. R. M. Mason (3 ♂, 14 ♀, CNC) ; Pikes Pk , 19.vi.1940, ALM (3 ♂, 3 ♀, USNM) ; Pikes Pass, Halfway House, 30.v., Cockerell (1 ♂, USNM) ; Telluride, Cornet Ck , 9.vii.1919, 37°55'N 107°45'W, 11000 ft (1 ♀, AMNH) ; Ward, Lk Isabelle , 24.vi.1922, 10800 ft (1 ♀, AMNH) . Maine: Katahdin , 2–3.v.1959 (4 ♂, 3 ♀, USNM) ; Mt. Katahdin, nr Saddle Spring , 4300 ft, 3.vii.1968, P. Ward (2 ♂, CNC) ; Orono , 1.v.1913, H.M. Parshley (1 ♀, CAS) . Michigan: Marquette Co., 15 mi NW Big Bay, Huron Mt. Club , v.1993 (1 ♀, CNC) . Montana: Ravalli Co., 5 mi E Lost Trail Pass , 28.vi.1952, C.B. Philip (11 ♀, CAS) , ditto, 26.vi.1952, W.L. Jellison (1 ♀, CAS) . New Hampshire: Halfway H, Mt . Washington, 13.vii.1916, C.W. Johnson (2 ♀, USNM) . New Mexico: Taos, Wheeler Peak , 12500', 15–25.vi.1960, Burks & Kinzer (1 ♀, USNM) . New York: Hamilton Co., 10km E, Indian Lk, 43°45'30''N, 74°10'14''W, 555 m, 21.v.1980, T. L. McCabe (3 ♀, BARC) . Oregon: Bethel , 19.v., 20.vi.1956, W.C. F. (1 ♂, 1 ♀, WSU) ; Detroit , willow, 11.iv.1939, K. Gray, J. Schuh (3 ♂, WSU) ; Jackson Co., Dead Indian Soda Spring, 21.v.1964, J. Schuh (1 ♀, WSU) ; Mt. Hood 25.vi.1935, ALM (1 ♀, USNM) ; Naknek , AFB, 4.vi.1954, W.C. F. (1 ♂, WSU) ; Vernonia , 13.iv.1936, on willow, K. Gray, J. Schuh (3 ♂, WSU) ; White Branch Meadow, Three Sisters, Frog Camp , 5500', 19.vii.1927, H.A. Scullen (5 ♀, USNM) . Utah: Garfield Co., 15 kmN Boulder , 20.vi.1994, JFM (1 ♀, CNC) . Washington: Clallam Co., Olympic NF, Klohowya Cpgd , 12.iv.1975, N.E. Woodley (1 ♂, USNM) ; Clallam Co., Olympic NF, Klohowya Cpgd , 12.iv.1975, D.M. Jackson (1 ♂, BARC) ; Mt. Rainier NP, Lk Louise , 4500 ft, on willow, 16.vii.1983, J.A. Downes (2 ♀, CNC) , ditto, Cayuse Pass , 4700 ft, on willow, 18.vii.1983, J.A. Downes (4 ♂, CNC) ; Olympia , 1.iv.1895 (1 ♀, USNM) ; Orcas Is. , 29.iii.1989, AB (5 ♂, CNC) ; Pierce Co., Fort Lewis , 30.iii.1951, R. Schuster (2 ♂, USNM) ; Snoqualmie Pass , 29.vi.1924, ALM (1 ♀, USNM) ; Whatcom Co., 23 mi E Glacier, Austin Pass , 4600 ft, 18.vii.1978, N.L. Herman (1 ♀, AMNH) ; Westport , 20.iii.1932, J. Wilcox (1 ♂, WSU) ; Whatcom Co., Glacier , 25.v.1965, F. Schmid (1 ♂, CNC) ; Yakima Co., 10 mi E Chinook Pass summit, 4.vii.1977, N.E. Woodley (1 ♂, USNM) , Pine Grass ridge, 25.v.1941, B. Brookman (1 ♀, CAS) . Wyoming: Yellowstone , 28.vi.1983 (1 ♀, CNC) .

Recognition. This species is distinguished by the clouding about the veins in females, multiserial acrostichals, general large body size, epandrium longer than wide, with long hypoproct process, phallus and postgonites.

Re-description. Wing length 4.2–4.5 mm. Male. Head subtriangular, 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 4.0 times longer than basal width, smoothly tapered; stylus very short, shorter than basal width of postpedicel, bristle-tipped, segment 9 about twice as long as wide, apical bristle nearly as long as segment 9. Proboscis long, projected obliquely; labium about as long as head height; palpus projected parallel to labrum, ca two-thirds length of labrum.

Thorax black (postpronotal lobe often yellowish posteriorly and postalar tubercle 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 [in specimens from Hokkaido scutum almost uniformly black brown], viewed anteriorly brown pollinose, with 3 darker broad 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 long, uniform bristly hairs. Mesonotal setae mostly not prominent, usually 3–4 npl (numerous additional long, fine setae), 3–4 prescutellar dc, 1 pal and scutellar setae somewhat stronger but their number and position greatly varying (except pal); mesonotum clothed almost uniformly with long hair-like setae; acr and dc setae multiserial, separated by narrow bare space, both extending to base of scutellum; scutellum with about 12–16 (greatly varying in number) or even more pairs of setae forming often (especially in larger specimens) additional rows.

Legs brownish (knees, extreme apex of femora and extreme base of tibiae usually brownish yellow to yellow). Coxae and trochanters with numerous long, hair-like setae. Fore and mid femora with long, numerous hair-like setae on posteroventral, posterior and dorsal faces; additionally, mid femur with similar setae anteriorly. Hind femur with long anteroventral and dorsal and short posteroventral hair-like setae. Tibiae lacking prominent setae, with some longer dorsal setulae (especially in basal part). Tarsomere 5 on all legs slightly flattened; pulvilli broad, shorter than tarsal claw.

Wing distinctly brownish infuscate ( Fig. 3A), with brown veins; no bristle at wing base; stigma distinct brownish, elliptical, overlapping apex of R 1; anal lobe very prominent, acute. 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, longer than basal cells, hardly produced apically, truncate; m-m crossvein long, M branches widely separated; dm-cu crossvein slightly concave; M 4 nearly as long as or somewhat shorter than 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 1–4 largely shining leaving margins finely pollinose, sternites 5–8 wholly finely pollinose. Terminalia concolorous with abdomen, small. Hypandrium slightly rounded, upcurved apically with broadly rounded and bifid apex; gonocoxal apodeme short and slender ( Fig. 6E). Postgonite posterior to phallus, extended well beyond epandrium, parallel with phallus and bent nearly at right angles subapically; bent apical section paired with several pairs of long basal spine-like projections and toothed surface apically; apex rounded. Epandrium not greatly inflated laterally; dorsal bridge very narrow; produced distally into slender subapical surstylus; apex of surstylus with finger-like projection medially. Phallus long and slender, arched well beyond cercus, bent nearly at right angles subapically; apical section gently sinuous; ejaculatory apodeme plate-like, rounded, slightly longer than gonocoxal apodeme; base of phallus produced posteriorly into slender lobe, strongly arched subapically forming slender bifid apex. Cercus tapered, more than half length of epandrium, finger-like and broad basally, apex rounded, extended well free from epandrium; hypoproct produced into pair of long, slender divergent lobes, slightly shorter than cercus.

Female. Head and thorax with shorter and stronger 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 or finely pollinose in different degrees (sometimes entirely). Anterior ocellars broadly lateroclinate, moderately long; posterior ocellars minute. Thorax with scutum viewed dorsally densely brownish grey pollinose, with 3 brownish vittae down acr and dc setae. Some mesonotal setae prominent, including 3 npl, 1 pal and 3–4 pairs of prescutellar dc, scutellum often with less numerous setae than in male. Legs with coxae brownish yellow at apex; femora and tibiae somewhat broader yellow at apex and at base, respectively; with short inconspicuous setation. Wing almost hyaline, brownish clouding along veins ( Fig. 2A). Abdomen with tergites finely greyish pollinose, covered with short, brownish yellow to yellowish or even pale hair-like setae; tergites 6–8 shinning. Cercus brownish, elongate, slender.

Distribution. This species is distributed across North America, extending as far south as northern New Mexico in the west and New England states in the east ( Fig. 7). In the Palearctic Region, I. macquarti extends from Scandinavia to the Russian Far East and as far south as the Alps ( Italy, Switzerland) and Mongolia ( Fig. 12B).