Anthomyza orthogibbus Roháćek & Barber 2016, sp. nov.

Anthomyza orthogibbus sp. nov. (Figs 384, 440–455) Type material. HOLOTYPE: ♂, “CAN:ON:SSMarie, Sault Coll.Outdoor Lab, 17.vii.2005, KNBarber, sweeps, Carex lacustris in opening 46°32.08'N 84°18.21'W ” and “ HOLOTYPUS ♂ Anthomyza orthogibbus sp. n., J. Roháček...

Full description

Bibliographic Details
Main Authors: Roháćek, Jindřich, Barber, Kevin N.
Format: Text
Language:unknown
Published: Zenodo 2016
Subjects:
Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Anthomyzidae
Anthomyza
Anthomyza orthogibbus
Canada
Seta
Pancake
Lookout
Stripe
Finn
Elliot
Foote
Dayton
Ege
Echo Bay
Elliot Lake
Campbell Bay
Sand Bay
Carex aquatilis
Online Access:https://dx.doi.org/10.5281/zenodo.4339790
https://zenodo.org/record/4339790
Description
Summary:Anthomyza orthogibbus sp. nov. (Figs 384, 440–455) Type material. HOLOTYPE: ♂, “CAN:ON:SSMarie, Sault Coll.Outdoor Lab, 17.vii.2005, KNBarber, sweeps, Carex lacustris in opening 46°32.08'N 84°18.21'W ” and “ HOLOTYPUS ♂ Anthomyza orthogibbus sp. n., J. Roháček & K. N. Barber det. 2013” (red). The specimen is in perfect condition, with well visible exposed genitalia (see Fig. 384) (CNCI, intact). PARATYPES: CANADA: MANITOBA: ~ 14 km SW Falcon Lake, jct.Hwy#1 & Rd.86E, 49°38.24'N 95°29.89'W, sweeps, graminoids, mostly Carex spp., 30.vii.2008, 2 ♂♂ 2 ♀♀, 29.vii.2011, 3 ♂♂ 3 ♀♀ (2 ♀♀ genit. prep.), K. N. Barber leg. (CNCI). ONTARIO: Batchawana P. Pk., 46°56.67'N 84°33.30'W, sweeps, mostly Carex spp. in wet trench under mixed canopy, 19.vii.2014, 3 ♂♂, K. N. Barber leg. (DEBU 01503961–63); Beverly Swamp, 7 km SSE Guelph, swept/eclector, forest & swamp, (Universität Bielefeld, X 978), 18.viii.1994, 1 ♂ 1 ♀, M. v. Tschirnhaus leg. (ZSMC, in ethanol); ~ 40 km NE Chapleau, 47°59.76'N 82°55.04'W, wet roadside sweeps, mostly Carex utriculata , 23.vi.2013, 1 ♂; Echo Bay, Echo Bay Marsh, 46°29.71'N 84°04.04'W, nr. lookout, sweeps, mostly Carex incl. C. utriculata , 24.vi.2012, 1 ♂; same locality but 46°29.66'N 84°04.12'W, near lookout, sweeps, mostly Carex utriculata , 15.vi.2013, 3 ♂♂ 3 ♀♀, 29.vi.2013, 3 ♂♂ 3 ♀♀, sweeps, mixed graminoids incl. Carex utriculata , 21.vii.2013, 8 ♂♂ 4 ♀♀; same locality but 46°29.71'N 84°04.04'W, sweeps, mostly Equisetum ssuviatile , Typha latifolia , 12.vi.2007, 1 ♀, sweeps, mostly Equisetum ssuviatile , Schoenoplectus acutus , 12.vi.2007, 2 ♂♂ 3 ♀♀, 18.vi.2007, 2 ♀♀, sweeps, mostly Equisetum ssuviatile , 18.vi.2007, 2 ♀♀, 12.vii.2008, 1 ♀, all K. N. Barber leg. (all CNCI); Echo Bay, Echo Bay Marsh, 46°29.71'N 84°04.04'W, ex. Equisetum ssuviatile ?, moist ground cover including E. ssuviatile , 10.v.2008, [reared at] 20°C, L:D 16:8, emerged: 3.vi.2008, 1 ♀, 5.vi.2008, 1 ♀; Echo Bay, Echo Bay Marsh, 46°29.71'N 84°04.04'W, ex. Equisetum ssuviatile , dry stalks on surface, 10.v.2008, [reared at] 20°C, L:D 16:8, emerged: 27.v.2008, 1 ♂, 28.v.2008, 1 ♂, 2.vi.2008, 1 ♂; Echo Bay, Echo Bay Marsh, 46°29.71'N 84°04.04'W, ex. Equisetum ssuviatile , dry stalks on surface, 17.v.2008, 20°C, L:D 16:8, emerged: 1.vi.2008, 1 ♂, 2.vi.2008, 2 ♂♂, 5.vi.2008, 2 ♂♂ 1 ♀, 7.vi.2008, 1 ♂ 1 ♀, 12.vi.2008, 2 ♀♀; Echo Bay, Echo Bay Marsh, 46°29.71'N 84°04.04'W, ex. Equisetum ssuviatile , dry stalks on surface, 4.iv.2009, [reared at] 6°C, L:D 0:24, instar 3 dissected 10.iv.2009, 20°C, L:D 16:8, [each with empty puparium in gelatin capsule], puparium: 25.iv.2009, emerged: 9.v.2009, 1 ♂, puparium: 30.iv.2009, emerged: 15.v.2009, 1 ♂, puparium: 1.v.2009, emerged: 16.v.2009, 1 ♀, puparium: 6.v.2009, emerged: 20.v.2009, 1 ♂, puparium: 9.v.2009, emerged: 24.v.2009, 1 ♀, puparium: 11.v.2009, emerged: 25.v.2009, 1 ♂, puparium: 14.v.2009, emerged: 29.v.2009, 1 ♂, puparium: 18.v.2009, emerged: 31.v.–1.vi.2009, 1 ♀, puparium: 19.v.2009, emerged: 2.vi.2009, 1 ♀, all K. N. Barber leg. (all CNCI); Elliot Lake, 46°22.23'N 82°36.49'W, sweeps, mixed graminoids incl. Carex utriculata , 29.vi.2013, 4 ♂♂ 7 ♀♀ (2 ♀♀ genit. prep.) (CNCI); ~ 14.5 km SSE Elliot Lake, ~ 3.7 km NNE jct Hwys 17&108, 46°14.71'N 82°33.53'W, sweeps, mostly Carex utriculata , 29.vi.2013, 23 ♂♂ 14 ♀♀ (USNM 5 ♂♂ 5 ♀♀, CNCI 18 ♂♂ 9 ♀♀, 2 ♀♀ genit. prep.), all K. N. Barber leg.; Goulais River, Sand Bay, 46°44.81'N 84°32.68'W, sweeping Juncus and Carex at margins of fen pools, 10. vii.2010, 1 ♂, J. Roháček leg.(SMOC); Lake Superior P. Pk., Hwy 17 near jct.Agawa Rock, 47°22.31'N 84°41.23'W, sweeps, mostly Carex utriculata , 30.vi.2013, 1 ♀ (DEBU 01503844, genit. prep.), 12.vii.2014, 2 ♂♂ 3 ♀♀ (DEBU 01503954–58), K. N. Barber leg.; Manitoulin I[sland], nr. Evansville, Campbell Bay, 45°49'32"N 82°33'14"W, sweeping lake shore graminoid vegetation, 2.vii.2010, 1 ♀, J. Roháček leg. (SMOC, genit. prep.); Manitoulin Is., ~ 2.2 km N Cold Springs, Perch Ck at Hwy 540, 45°53.1'N 82°06.2'W, sweeps/pooter, Calamagrostis canadensis , 4.vii.1999, 1 ♂ 2 ♀♀ (1 ♀ genit. prep.); same locality but 45°53.2'N 82°06.3'W, sweeps, various grasses/sedges in noodplain, 5.vii.1998, 1 ♀ (genit.prep.), all K.N. Barber leg.(all CNCI); Pancake Bay P.Pk., 46°58.11'N 84°42.72'W, sweeps from boardwalk, mostly emergent sedges/ Equisetum , 2.viii.2004, 2 ♂♂ 1 ♀ (DEBU 01500873–75), 7. viii.2004, 3 ♂♂ 2 ♀♀ (DEBU 01501092–96), 3.ix.2004, 1 ♂ (DEBU 01501324), 4.ix.2004, 1 ♂ (DEBU 01501431), 27.vi.2005, 4 ♂♂ 2 ♀♀ (DEBU 01501614–19), 7.vii.2007, 1 ♀ (DEBU 01501896), 29.v.2010, 1 ♂ (DEBU 01502435); same locality but 46°58.10'N 84°42.71'W, sweeps, mostly Carex nr. wetland boardwalk, 24.vii.2004, 1 ♂ 3 ♀♀ (DEBU 01500726–29), 2.viii.2004, 1 ♀ (DEBU 01500903), sweeps, mostly Carex utriculata in fen near boardwalk, 19.vii.2014, 6 ♂♂ 3 ♀♀ (DEBU 01503979–87, 1 ♀ genit. prep.); same locality but 46°58.06'N 84°42.69'W, sweeps, mostly Carex utriculata in fen, 19.vii.2014, 6 ♂♂ 6 ♀♀ (DEBU 01503989–4000), all K. N. Barber leg.; ~ 2 km SW Richmond, along railway 2.9 km NE Kettles Rd., 45°08.54'N 75°51.09'W, sweeps, Equisetum ssuviatile , Typha , Carex , Impatiens , ditch, 25.vii.2007, 1 ♂; ~ 4 km SW Richmond, Jct. Munster Rd./Kettles Rd., 45°06.83'N 75°52.76'W, sweeps, sedges, Equisetum ssuviatile , nooded ditch/fen, 23.vii.2007, 1 ♂ 2 ♀♀, all K. N. Barber leg. (all CNCI); S[ault] S[te.] Marie, S. of Algoma U[niversity] College, 46°29.9'N 84°17.2'W, sweeps, Carex aquatilis , 12.vii.1997, 1 ♂ (genit. prep.), 22.vi.1998, 1 ♂ (genit prep.), 9.vi.2001, 2 ♀♀, 10.vi.2001, 1 ♂, 28.vi.2002, 2 ♂♂ 3 ♀♀ (1 ♀ genit. prep.), 29.vi.2002, 2 ♂♂ 3 ♀♀ (2 ♀♀ genit. prep.) (CNCI), 1.vii.2002, 1 ♂ 1 ♀ (CASC), 5.vii.2002, 2 ♂♂ 1♀ (1 ♀ genit.prep.), 9.vii.2002, 1 ♂ 5 ♀♀ (3 ♀♀ genit.prep.) (CNCI), 12.vii.2002, 1 ♀ (CASC), 31.vii.2002, 2 ♀♀ (1 ♀ genit. prep.), 18.vi.2005, 2 ♂♂ (CNCI), sweeps, mostly Carex aquatilis , 12.vi.2001, 2 ♂♂, 13.vi.2001, 1 ♀, 14.vi.2001, 1 ♂ 2 ♀♀ (LACM), 14–17.vi.2001, 2 ♂♂ 7 ♀♀ (1 ♀ genit. prep.), 21–22.vi.2001, 3 ♀♀, 22. vi.2001, 1 ♂, 25.vi.2001, 2 ♂♂ 10 ♀♀ (1 ♀ genit. prep.), 28–30.vi.2001, 5 ♀♀ (1 ♀ genit. prep.) (CNCI), 15. vii.2001, 1 ♀, 17.vii.2001, 4 ♂♂ 3 ♀♀ (AMNH), 18.vii.2001, 5 ♀♀ (1 ♀ genit. prep.), 2.viii.2002, 1 ♀, 4.viii.2002, 1 ♂ 1 ♀ (1 ♀ genit. prep.), sweeps, Carex lacustris , 12.vii.1997, 1 ♀, sweeps, mostly Calamagrostis canadensis , 29.vii.2001, 1 ♀, sweeps/pooter, mostly Calamagrostis canadensis , 12.vii.2002, 1 ♂, sweeps, graminoids mostly Carex aquatilis , 11.vi.1997, 2 ♀♀ (CNCI); same locality but 46°29.88'N 84°17.19'W, sweeps, Carex aquatilis , 1.vii.2003, 2 ♂♂ 1 ♀ (CASC), 18.vi.2005, 1 ♂ 1 ♀, sweeps, mostly Carex aquatilis , 18.vii.2004, 2 ♀♀, sweeps, Phalaris arundinacea , 18.vi.2005, 1 ♂ (CNCI), all K. N. Barber leg.; S[ault] S[te.] Marie, S. of Algoma University, 46°29.88'N 84°17.19'W, sweeps, mostly Carex spp., Scirpus cyperinus , 5.vii.2008, 4 ♂♂ 1 ♀; S[ault] S[te.] Marie, Birchwood Pk., mixed forest, 28.vi.1986, 1 ♀; S[ault] S[te.] Marie, Finn Hill, 46°31.48'N 84°17.36'W, sweeps, mostly Scirpus microcarpus , 18.vi.2005, 8 ♂♂ 1 ♀, 14.viii.2005, 1 ♂, 25.viii.2005, 1 ♀, 8.vii.2006, 1 ♀, all K. N. Barber leg. (all CNCI); Sault Ste. Marie, Finn Hill, 46°31.48'N 84°17.36'W, sweeping graminoid vegetation, 7. vii.2010, 5 ♂♂ 7 ♀♀ (2 ♂♂ 7 ♀♀ genit. prep.), 12.vii.2010, 2 ♂♂, J. Roháček leg. (SMOC); S[ault] S[te.] Marie, Finn Hill, 46°31.63'N 84°17.29'W, sweeps, Scirpus microcarpus , 19.vii.2004, 1 ♂, 27.vi.2007, 2 ♂♂, 13.vii.2007, 1 ♂ 2 ♀♀, 6.vii.2008, 1 ♂; same locality but 46°31.63'N 84°17.33'W, sweeps, Carex stipata stipata , 19.vii.2004, 1 ♀, 26.vi.2007, 1 ♂, all K. N. Barber leg. (all CNCI); Sault Ste. Marie, Finn Hill, 46°31.63'N 84°17.33'W, sweeping boggy meadows, mostly Carex stipata stipata , 12.vii.2010, 1 ♂, J. Roháček leg. (SMOC); S[ault] S[te.] Marie, Kinsmen Pk., 46°35.7'N 84°16.7'W, sweeps, mostly Carex , 11.viii.2002, 1 ♀ (CNCI); S[ault] S[te.] Marie, Sault Coll[ege] Outdoor Lab, 46°32.08'N 84°18.21'W, sweeps, Carex lacustris in opening, 17.vii.2005, 16 ♂♂ 20 ♀♀ (1 ♀ genit. prep.) (CNCI), 2.viii.2005, 24 ♂♂ 22 ♀♀ (USNM 5 ♂♂ 5 ♀♀, CNCI 19 ♂♂ 17 ♀♀, 3 ♀♀ genit. prep.), 24.viii.2005, 1 ♂ 1 ♀, sweeps, Carex lacustris , 8.vii.2006, 6 ♂♂ 5 ♀♀ (1 ♀ genit. prep.) (CNCI), 28.viii.2006, 5 ♂♂ 6 ♀♀ (SMOC), 16.ix.2006, 2 ♂♂, 17.vii.2007, 7 ♂♂ 16 ♀♀, 12.vii.2008, 2 ♂♂ 2 ♀♀ (1 ♀ genit. prep.), sweeps, Carex gynandra , opening edge, 2.viii.2005, 2 ♀♀ (CNCI); ~ 5 km SE Searchmont, km6.2 Ranger Lk. Rd., 46°45.52'N 83°59.51'W, sweeps, sedges at beaver dam outnow, 23.vi.2007, 1 ♂ (CNCI), all K. N. Barber leg.; Walpole Is., 13.vii.1980, 1 ♀ (genit. prep.), K. N. Barber leg. (DEBU). QUEBEC: Gatineau Park, Champlain Outlook, 21.vii.1986, 1 ♂, R. Danielsson leg. (MZLU, genit. prep.); La Trappe, 4.vi.1936, 1 ♀, J. Ouellet leg. (CNCI, genit. prep.); Lac St-Francois Nat.Wildlife Area, NW of Aménag.Therrien, close to Ruisseau Th[errien], 45°00.39'N 74°30.99'W, Carex meadow, sweeping, T1a, 5.vi.1999, 1 ♂ 2 ♀♀ (LEMQ 0040135, -41, -42), 7.viii.1999, 2 ♂♂ (LEMQ 0040132, -38), T1b, 5.vi.1999, 2 ♂♂ 5 ♀♀ (LEMQ 0040136, -37, -40, -41, -44, -48, -49, 1 ♀ genit. prep.), 2.viii.1999, 1 ♂ 1 ♀ (LEMQ 0040134, -46), 3–11.ix.1999, 1 ♀ (LEMQ 0040140), T1c, 5.vi.1999, 1 ♂ 2 ♀♀ (LEMQ 0040133, -45, -47); same locality but 45°02.40'N 74°28.03'W, ex. Carex lacustris , under sheath leaf at 10–15 cm from roots, (F 2,#157), 19.x.1999, emerged 9.ii.2000, 1 ♀ (LEMQ 0040151), all F. Beaulieu leg. UNITED STATES OF AMERICA: ILLINOIS: Champaign Co., 25.v.1925, 1 ♀, M. W. Shackleford leg. (CNCI). MASSACHUSETTS: Sandwich, 22.vi.1924, 1 ♀ (genit. prep.), A. H. Sturtevant leg.; Woods Hole, 6.vi.1913, 1 ♂, [no collector] (both USNM). NEW YORK: Bemus Pt., Chautauqua Lake, swampy woods, 31.v.1963, 1 ♀ (genit. prep.); Chautauqua Co., S. Dayton, marsh area, 1.vi.1963, 1 ♀ (genit. prep.), both W. W. Wirth leg. (both USNM); Roch, 22.vii.1942, 1 ♂, H. Stalker leg. (AMNH). NORTH CAROLINA: Highlands, 3800', 17.viii.1957, 1 ♂, J. G. Chillcott leg. (CNCI). OHIO: Portage Co., Kent, 41°09'N 81°30'W, 17.vi.2006, 1 ♀; Portage Co., 4 mi NE of Kent, Battaglia Bog, swept from Carex oligosperma , 15.v.1999, 1 ♂ 3 ♀♀ (3 ♀♀ genit. prep.); Portage Co., 3 mi NE of Kent, Towners Woods Marsh, 1.vi.2005, 1 ♀; Portage Co., NE of Kent, Towners Woods Marsh, swept from Scirpus cyperinus , 8.vi.2005, 2 ♂♂ 3 ♀♀, 16.vi.2005, 1 ♂, 25.vi.2005, 1 ♂, 26.vii.2005, 1 ♂; Portage Co., NE of Kent, Towners Woods Marsh, 41°10'N 81°18'W, swept from Leersia oryzoides (L.) Sw., 14.v.2007, 1 ♀, swept from Scirpus cyperinus , 20.v.2007, 1 ♂ 3 ♀♀; Portage Co., 4.0 mi E of Kent, 41°08'11"N 81°16'44"W, 1.vi.2005, 1 ♂ 1 ♀, all B. A. Foote leg. (all CMNH). VIRGINIA: Chain Bridge, 10.ix.1922, 1 ♂, J. R. Malloch leg. (USNM). Other material examined (not included in type series). CANADA: ONTARIO: Echo Bay, Echo Bay Marsh, 46°29.71'N 84°04.04'W, ex. Equisetum ssuviatile , dry stalks on surface, 17.v.2008,20°C, L:D 16:8, emerged: 5.vi.2008, 1 ♀, K. N. Barber leg. (CNCI, shriveled, genit. prep.) ~ 14.5 km SSE Elliot Lake, ~ 3.7 km NNE jct Hwys 17&108, 46°14.71'N 82°33.53'W, sweeps, mostly Carex utriculata , 29.vi.2013, 1 ♂, K. N. Barber leg. (CNCI, head crushed, wing illustration); Sault Ste. Marie, Finn Hill, 46°31.48'N 84°17.36'W, sweeping graminoid vegetation, 7.vii.2010, 2 ♂♂, J. Roháček leg. (SMOC, used for molecular analysis). QUEBEC: Lac St-Francois Nat. Wildlife Area, NW of Aménag.Therrien, close to Ruisseau Th [errien], 45°00.39'N 74°30.99'W, Carex meadow, sweeping, T1 b, 5.vi.1999, 1 ♀, F. Beaulieu leg. (LEMQ 0040150, headless, genit. prep.). Description. Male. Total body length 2.26–3.09 mm; colour resembling that of pale form of A. gibbiger , generally yellow (Fig. 384) with variable ochreous to pale brown darkenings on head and thorax (always with brownish dorsal band on pleuron) and more distinctly yellow-and-brown variegated preabdominal terga; no dichroism recognized (dark form absent). Head similar to that in A. gibbiger , distinctly longer than high (thus more elongate than in A. variegata ) and anteriorly angular in pronle with somewhat receding face. Head almost completely yellow, with only ocellar triangle and some marginal darkenings on occiput brownish (see below). Occiput slightly concave, largely yellow but usually with narrow faint darker stripes dorsolaterally and above foramen; medially with two elongate silvery white microtomentose spots meeting above foramen (as in A. variegata ). Frons narrow as in relatives, yellow, usually darker yellow to orange ochreous anteromedially and along orbits, mostly dull; ocellar triangle pale brown to brown; frontal triangle relatively dull yellow but slightly glittering in contrast to entirely opaque and paler yellow adjacent areas. Orbits pale yellow, silvery whitish microtomentose, less distinctly beyond posterior ors. Frontal triangle narrow, reaching midpoint to anterior third of frons. Frontal lunule small, transverse, pale yellow. Face narrow, medially concave or with longitudinal furrow; dull yellow and separated from parafacialia by wide golden orange marginal stripe (as in pale form of A. gibbiger ); parafacialia and gena whitish yellow to white, with silvery white microtomentum; ventral marginal stripe of gena yellow and wider than in most relatives. Postgena and mouthparts yellow to light yellow. Cephalic chaetotaxy generally as in A. variegata , except vte often as long as vti and posterior ors (thus these setae subequal); middle ors sometimes reaching length of posterior ors. Eye ovoid, more elongate than in A. variegata , with longest diameter 1.5–1.6 times as long as shortest. Shortest genal height 0.13–0.15 times as long as shortest eye diameter. Antenna nattened, geniculate, yellow; 1st nagellomere usually darker on outer side than on inner, and with white pilosity distinctly shorter than in A. variegata . Basal segments of arista ochreous yellow to pale yellow and distal seta blackish brown; arista 1.8–1.9 times as long as antenna, relatively shortly pubescent (as in A. gibbiger ), with cilia markedly shorter than those on 1st nagelomere. Thorax very slightly narrower than head, largely yellow, with rather faint brownish pattern on scutum, and darker band on pleuron. Scutum yellow, usually with darker yellow to pale ochreous brown sublateral bands, sometimes with a pair of medial darker stripes in addition. Humeral and notopleural areas pale yellow; scutellum yellow to dark yellow. Dorsum of thorax somewhat pale ochreous grey microtomentose and relatively dull. Pleural part of thorax more shining than scutum, yellow to pale yellow (ventrally), always with pale brown to brown dorsal band. Postscutellum distinctly darker than postnotum and scutellum, ochreous yellow to ochreous brown. Thoracic chaetotaxy as in A. variegata but prs usually shorter and weaker than hu, sa or pa; the smaller anterior dc about as long as or shorter than anterior npl, and 6–8 dc microsetae in front of anterior dc; 4–5 rows of ac microsetae at suture, only 2 medial rows between dc ending usually at level of posterior dc; apical sc subequal to posterior dc (both longest thoracic setae); no additional small setulae on scutellum, laterobasal short sc situated more dorsally on disc (as in A. gibbiger ); stpl setae and setulae as in A. gibbiger including occasional occurrence of 1 additional setula in front of anterior stpl. Scutellum broader than in A. gibbiger , thus more similar to that of A. variegata . Legs coloured as in A. variegata and other relatives; also pedal chaetotaxies very similar but f 1 with ctenidial spine not longer (often shorter) than maximum width of t 1, thus markedly shorter than in all Nearctic relatives. Wing (Fig. 440) narrow, elongate and coloured as in A. gibbiger . Also venation very similar to that of the latter species, including R 2+3 with apex very slightly upcurving; R 4+5 very slightly bent and parallel, M almost straight, dm cell long, with r-m situated in front of its middle and apical portion of CuA 1 longer than dm-cu. Wing measurements: length 2.24–2.74 mm, width 0.65–0.85 mm, Cs 3: Cs 4 = 1.12–1.38, rm\dm-cu: dm-cu = 2.62–3.69. Haltere dirty yellow with some ochreous to pale brown tinge. Abdomen ventrally pale yellow, dorsally yellow-and-pale brown variegated (Fig. 384), thus its transverse striping usually less distinct, resembling that of pale forms of dichroic relatives. T1 pale brown with anterior corners light yellow. T2–T5 more or less yellow in anterior half, posteriorly with transverse pale brown band covering half or more of tergum and almost reaching onto posterior corners but lateral margi : Published as part of Roháćek, Jindřich & Barber, Kevin N., 2016, Nearctic Anthomyzidae: a monograph of Anthomyza and allied genera (Diptera), pp. 1-412 in Acta Entomologica Musei Nationalis Pragae (suppl.) (suppl.) 56 on pages 264-277, DOI: 10.5281/zenodo.4272829 : {"references": ["LOEW H. 1863: Diptera Americae septentrionalis indigena. Centuria quarta. Berliner Entomologische Zeitschrift 7: 275 - 326."]}

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