Leucotaraxis argenticollis (Zetterstedt) Gaimari & Havill, 2021

Gaimari, Stephen D. & Havill, Nathan P., 2021, A new genus of Chamaemyiidae (Diptera: Lauxanioidea) predaceous on Adelgidae (Hemiptera), with a key to chamaemyiid species associated with Pinaceae-feeding Sternorrhyncha, Zootaxa 5067 (1), pp. 1-39 : 10-14

Leucotaraxis argenticollis (Zetterstedt) , comb. nov.

( Figs 1B–C , 2A–B , 3A, 3D–E )

Leucopis argenticollis Zetterstedt 1848: 2714 . Sweden. Gottlandia (LT ♂, MZLU). References – Czerny 1936: 10 (key), 11 (redescription); McAlpine & Tanasijtshuk 1972: 1865 (redescription), 1870 (lectotype designation), fig. 1 (head), fig. 3 (abdomen), figs 5–6 (female terminalia), figs 8–16, 19 (male genitalia), figs 20–27 (immatures); Tanasijtshuk 1986: 201 (redescription), figs 333–337 (male genitalia), figs 338–345 (larval); Papp 1979: 82 (key, description), fig. 54A (abdomen), fig. 54B (male genitalia); Kohler et al. 2008: 494 (biology); Grubin et al. 2011: 1410 (biology); Havill et al. 2018 (biology, population genetics); Neidermeier et al. 2020 (biology, biological control); Dietschler et al. 2021 (biology, biological control).

Leucopis orbitalis Malloch 1921: 352 . United States. Illinois: Dundee (HT ♂, INHS). References – McAlpine 1965: 709 (catalog); McAlpine & Tanasijtshuk 1972: 1865 (synonymy).

Leucopis sp. nr. orbitalis . References – Rao 1965: 43; McAlpine & Tanasijtshuk 1972: 1865 (identity).

Diagnosis. The face and lunule ( Fig. 2B ) are silvery-grey pruinose. The postpronotum ( Fig. 2A ) has 1 to several long setulae (longer than the setulae on the scutum) medially from the postpronotal seta. In the male (see figs 8–16, 19 in McAlpine & Tanasijtshuk 1972), the epandrial complex is simple, small, and yellowish- to silvery-grey pruinose, with no central epandrial process; the surstylar lobe is short and slender, the phallus ( Fig. 3A ) is broad in lateral view with a wedge-shaped anterobasal process at a 90° angle from the thin elongate pointed process. In the female ( Figs 3D–E ), tergites ( Fig. 3E ) with tergite 6 enlarged and slightly less than 2 X wider than long, tergite 7 present and strap-like, tergite 8 longer than wide, slightly tapering distally; sternites ( Fig. 3D ) with sternite 6 enlarged and about 2 X wider than long, sternite 7 present and arcuate.

Immatures. Egg. Measurements as in Leucotaraxis atrifacies ( Fig. 1A ). Larvae. Described and figured in McAlpine & Tanasijtshuk (1972). Puparium ( Fig. 1B ). Length 2.3–2.8 mm, width 0.9–1.0 mm. Dehiscent anterior segments (dorsal and ventral) 0.05–0.06 mm long. Raised posterior spiracular tubercles ( Fig. 1C ) 0.12–0.16 mm long, darkly sclerotized.

Biology. Predators as larvae on species of Adelges Vallot and Pineus Shimer ( Hemiptera : Adelgidae ) on Pinaceae ( Abies , Picea , Pinus , Tsuga ). Specific records (including our own rearings) include: Adelges piceae on Abies balsamea ; Adelges tsugae on western hemlock, Tsuga heterophylla ( Kohler et al. 2008) ; Pineus abietinus Underwood & Balch on Abies lasiocarpa ; Pineus boerneri on Pinus henryi ; Pineus coloradensis (Gillette) on Pinus banksiana , Pinus contorta , Pinus flexis , Pinus monticola , and Picea engelmannii ; Pineus pineoides (Cholodkovsky) on Picea sp. ; Pineus pini on Pinus sylvestris ; Pineus similis (Gillette) on Picea glauca and Picea abies ; Pineus strobi on Pinus strobus ( Wantuch et al. 2019) ; Pineus spp. on Picea glauca , Pinus contorta , Pinus insularis , Pinus pentaphylla , Pinus resinosa , Pinus strobus and Pinus sylvestris ( McAlpine & Tanasijtshuk 1972) .

Several specimens were swept from infestations of Cinara ponderosae (Williams) in young stands of Pinus ponderosa (e.g., height less than 5 m throughout the large stand), but despite rearing>150 chamaemyiid larvae from this host, none were this species but were instead Vitaleucopis nidolkah Gaimari and an undescribed species of Leucopis (Leucopis) . It remains a possibility that Leucotaraxis argenticollis is also a predator in that system, whether on the Cinara aphids or on adelgids unseen by the first author while collecting.

Remarks. At two different localities (one in New Mexico and one in Arizona), this species was collected together with Chamaethrix necopina Gaimari, Leucotaraxis atrifacies and Vitaleucopis nidolkah , and at the New Mexico locality also with Leucotaraxis sepiola . The puparial stage is distinguishable from that of Leucotaraxis atrifacies and L. piniperda by the slightly longer posterior spiracular tubercle, which is more darkly sclerotized distally in this species, and the slightly larger size. The three specimens from Coconino County, Arizona, were mistakenly listed by Tanasijtshuk (2002) as Leucopis piniperda .

Distribution. Nearctic: Canada (Alberta, British Columbia, Manitoba, Newfoundland, New Brunswick, Northwest Territories, Ontario, Quebec). USA (Alaska, Arizona, California, Colorado, Connecticut, Georgia, Idaho, Illinois, Massachusetts, Minnesota, Montana, New Hampshire, New Mexico, New York, North Carolina, Ohio, Oregon, Pennsylvania, Utah, Virginia, Washington, Wyoming). Oriental. India ( Rao 1965). Palearctic: England ( McLean 1982), Japan, Russia ( McAlpine & Tanasijtshuk 1972), Sweden.

Specimens examined. Nearly all specimens from McAlpine & Tanasijtshuk (1972) were examined, with additional specimens as follows. CANADA: ALBERTA. Seele, H 2 O Rd, 12.i.1971, coll. L.S. Skaley, ex. duff around P [inus]. contorta , 3916, 74-726 15 (1 ♀, CNC). BRITISH COLUMBIA. Atlin, 2200 ft., 2.vi.1955, coll. H. Huckel (1 ♀, CNC). Burns Lake, 8.vii.1993, coll. L.M. Humble, ex. Pinus contorta foliage, emerged 20.vii.1993, FIDS No. 93-0504-02 (1 ♀, PFCA). Kitimat, 2.vi.1960, coll. R. Pilfrey (1 ♂, CNC), coll. J.G. Chillcott, ex. hemlock forest (1 ♀, CNC). Princeton, 19.v.1986, ex. pine leader (1 ♀, CNC). Saanichton, 26.iii.1993, coll. L.M. Humble, ex. beating of hemlock foliage infested with Adelges tsugae, FIDS No. 93-0005-01 (1 ♂, 1 ♀, CSCA; 1 ♂, 2 ♀, PFCA), 30.iv.1993, FIDS No. 93-0037-02 (2 ♂, 2 ♀, PFCA), 11.vi.1993, FIDS No. 93-0204-01 (1 ♀, PFCA), 28.v.1993, ex. puparia in Adelges tsugae wool on Tsuga heterophylla , emerged 31.v.1993, FIDS No. 03-0102-01 (1 ♂, 1 ♀, CSCA; 1 ♂, 1 ♀, PFCA). Summit Lake, Mile 392 Alaska Highway, 4200 ft., 21.vii.1959, R.E. Leech (1 ♂, 2 ♀, CNC), 5000 ft., 6.vii.1959, coll. R.E. Leech (1 ♂, CNC). ONTARIO. Ottawa, 4.vii.1963, coll. J.R. Vockeroth, ex. Pineus similis on Picea glauca , emerged 15.vii.1963 (1 ♀ with puparium, CNC). Ottawa, 17.vii.1963, coll. J.R. Vockeroth (3 ♂, 4 ♀, CNC), 22.vii.1963 (3 ♂, CNC), 23.vii.1963 (1 ♂, 1 ♀, CNC). Hazeldean, 23.vi.1963, coll. A.W. Steffan, ex. reared on Pineus similis on Picea abies , emerged 7.vii.1963 (1 ♀, CNC). QUEBEC. Duchesnay, 21.vii.1942, coll. Jos. I. Beaulne (1 ♂, QMOR). Gatineau County, Masham Township, 21.v.1974, coll. D.M. Wood (1 ♀, CNC). USA: ALASKA. Matanuska-Susitna Borough, Big Lake, 10.vii.2020, coll. Jason Moan, ex. Pineus coloradensis on Pinus contorta (1 larva [molecular voucher], YPM; ENT996080). ARIZONA. Apache Co., Apache National Forest, 0.3 mi. S mi. 249 on US Route 191, 5 mi. S Alpine, along Coleman Creek, 33°47’24”N 109°10’01”W, 2500 m, 30.vi.1995, coll. S.D. Gaimari, ex. sweep Pinus ponderosa (2 ♀, CSCA), 1.vii.1996 (1 ♀, CSCA); clearing 6.4 mi. N southern junction Forest Roads 24 & 25 on Road 24, 33°39’22”N 109°21’38”W, 2725 m, 2.vii.1995, coll. S.D. Gaimari, ex. sweep vegetation, including Pinus ponderosa (2 ♀, CSCA). Coconino Co., Fort Valley Experiment Station, 13.iii.1929, Lot VII (1 ♀, USNM), 15.iii.1929, Lot VI (1 ♂, USNM), 18.iii.1929, Lot II (1 ♀, USNM). CALIFORNIA. Riverside Co., Riverside, UCR campus, 10.vi.1963, coll. R.C. Dickson (1 ♀, CNC). COLORADO. Larimer Co., Zimmerman Lake trail, 40.5397, –105.8792, 27.vii.2016, coll. Nathan Havill, ex. Pineus coloradensis on Picea engelmannii (1 larva [molecular voucher], YPM; ENT857047). CONNECTICUT. Hartford Co., Hartford, Cedar Hill Cemetery, 41.7266, –72.6932, 5.vi.2016, coll. M.E. Montgomery, ex. Pineus strobi on Pinus strobus (6 larvae [molecular voucher], YPM; ENT961206–11). Litchfield Co., Bridgewater, Skyline Ridge Rd., 41.4704, –73.3190, 6.vii.2002, coll. N. Havill, ex. Pineus strobi on Pinus strobus (1 puparium [molecular voucher], YPM; ENT856455). GEORGIA. Union Co., Byron H. Reese Trailhead, 34.7422, –83.9227, 20.v.2018, coll. Jim Sullivan, ex. Pineus strobi on Pinus strobus (7 larvae [molecular voucher], YPM; ENT996058–64). White Co., Helen, Chattahoochee National Forest, 34.7930, –83.7558, 13.ix.2019, coll. Jim Sullivan, ex. Pineus strobi on Pinus strobus (7 larvae [molecular voucher], YPM; ENT979185–88, ENT979191, ENT979199, ENT979204). IDAHO. Boise Co., Boise National Forest, 43.8963, –115.7125, 13.ix.2016, coll. Kelsey Bedford, ex. Adelges piceae on Abies lasiocarpa (1 larva [molecular voucher], YPM; ENT961177). Kootenai Co., Coeur d’Alene, 47.697, –116.772, 23.v.2013, coll. Gina Davis, ex. Adelges tsugae on Tsuga heterophylla (5 larvae [molecular voucher], YPM; ENT856473–77). MASSACHUSETTS. Franklin Co., Sunderland, Mt. Toby State Forest, 42.4892, –72.5314, 13.v.2018, coll. Ryan Crandall, ex. Pineus strobi on Pinus strobus (4 larvae [molecular voucher], YPM; ENT996067– 70). Worcester Co., Worcester, 42.2790, –71.7733, 12.v.2018, coll. Felicia Andre, ex. Pineus strobi on Pinus strobus (1 puparium, 3 larvae [molecular voucher], YPM; ENT996065–67). MINNESOTA. Crow Wing Co., Kettleson’s, 46.65631°N 94.06856°W, 28.v.2009, coll. N. Havill & J. Albers, ex. reared from Pineus strobi on Pinus strobus, N. Havill sample 09-135, Specimen #09E489 (1 ♂ [molecular voucher], CSCA), Specimen #09E488 (1 ♂ [molecular voucher], CSCA), Specimen #09E504 (1 ♂ [molecular voucher], CSCA), Specimen #09E525 (1 ♀, CSCA-FTC). Itasca Co., Grand Rapids, UMN North Central Research and Outreach Center, 47.2517, –93.5103, 28.v.2009, coll. Nathan Havill, Jana Albers, ex. Pineus strobi on Pinus strobus (1 larva [molecular voucher], YPM; ENT856650). Stearns Co., Birch Lakes State Forest, 45°45’51”N 94°46’03”W, 23.vi.2009, coll. R. Tiplady, ex. reared from Pineus strobi on Pinus strobus (1 puparium, 2 adults [molecular voucher], YPM; ENT856456 (puparium), ENT856414, ENT856417), 30.v.2009, coll. N. Havill & R. Tiplady, ex. reared from Pineus strobi on Pinus strobus, N. Havill sample 09-136, Specimen #09E484 (1 ♂ [molecular voucher], CSCA), Specimen #09E485 (1 ♂ [molecular voucher], CSCA), Specimen #09E486 (1 ♂ [molecular voucher], CSCA), Specimen #09E487 (1 ♂ [molecular voucher], CSCA), Specimen #09E492 (1 ♂ [molecular voucher], CSCA), Specimen #09E493 (1 ♂ [molecular voucher], CSCA), Specimen #09E494 (1 ♂ [molecular voucher], CSCA), Specimen #09E495 (1 ♂ [molecular voucher], CSCA), Specimen #09E496 (1 ♂ [molecular voucher], CSCA), Specimen #09E497 (1 ♂ [molecular voucher], CSCA), Specimen #09E501 (1 ♂ [molecular voucher], CSCA), Specimen #09E502 (1 ♂ [molecular voucher], CSCA), Voucher #09E509 (13 ♀, CSCA-FTC). MONTANA. Park Co., Yellowstone National Park, Cascade Lake Trail, 44.7518, –110.4863, 19.ix.2016, coll. Gina Davis, Lee Pederson, ex. Pineus coloradensis on Pinus contorta (1 larva [molecular voucher], YPM; ENT96215). Teton Co., Choteau 47.8976, –112.5721, 24.viii.2017, coll. Gina Davis, ex. Pineus coloradensis on Pinus flexilis (2 larvae [molecular voucher], YPM; ENT996081–82). NEW HAMPSHIRE. Hillsborough Co., Hillsboro, Fox State Forest, 43.1316, –71.9286, 29.viii.2016, coll. Jennifer Weimer, ex. Pineus strobi on Pinus strobus (3 larvae [molecular voucher], YPM; ENT961212–14). Rockingham Co., Pawtuckaway State Park, 43.0869, –71.1574, 30.iv.2019, coll. Jennifer Weimer, ex. Pineus strobi on Pinus strobus (1 larva [molecular voucher], YPM; ENT961221). NEW MEXICO. Lincoln Co., Lincoln National Forest, 2.4 km W Angus, Mills Canyon, along Rio Bonito, 33°27’05”N 105°41’46”W, 2130 m, 18–19.vi.1995, coll. S.D. Gaimari, ex. sweep colonies of Cinara ponderosae on Pinus ponderosa (1 ♂, CSCA), 26.vi.1995 (3 ♀, CSCA-FTC). McKinley Co., Cibola National Forest, Zuni Mountains, 4.4 mi. SE Fort Wingate, 35°25’49”N 108°29’17”W, 7300 ft., 25.vi.1996, coll. S.D. Gaimari, ex sweep Pinus edulus (1 ♂, 1 ♀, CSCA). NEW YORK. Monroe Co., Rochester, Highland Park, 43.1278, –77.6122, 8.vii.2017, coll. Cynthia Smith, ex. Pineus strobi on Pinus strobus (1 puparium [molecular voucher], CUIC). OHIO. Portage Co., Kent, 13.vii.1969, coll. T.P. Sluss (1 ♂, UAIC). OREGON. Deschutes Co., Deschutes River, 1 mi. SW Pringle Falls, 4250 ft., 31.vii.1970, coll. Paul H. Arnaud, Jr., ex. flight trap (1 ♀, CAS). Lake Co., Fort Rock, Deschutes National Forest, 43.5651, –121.1768, 25.iv.2104, coll. Glenn Kohler, ex. Pineus coloradensis on Pinus contorta (1 puparium [molecular voucher], YPM; ENT996083). PENNSYLVANIA. Centre Co., Boalsburg, Shingletown Rd. & West Main St., 40°46’27”N 77°48’44”W, 11.iv.2009, coll. N. Havill & M. Nehme, ex. swept Pineus strobi on Pinus strobus, N. Havill sample 09-42, Specimen #09E490 (1 ♂ [molecular voucher], CSCA), Specimen #09E491 (1 ♂ [molecular voucher], CSCA). UTAH. Weber County, Eden, 41.3715, –111.9228, iv.2020, coll. Justin Williams, ex. Adelges piceae on Abies lasiocarpa (1 larva [molecular voucher], YPM; ENT996084). VIRGINIA. Giles Co., Jefferson National Forest, Dismal Falls, 37.19263, –80.8923, 13.iv.2016, coll. Holly Wantuch, ex. Pineus strobi on Pinus strobus (6 larvae [molecular voucher], YPM; ENT906890, ENT906894–95, ENT906897, ENT906899–900). Pulaski Co., Pulaski, Gatewood Park and Reservoir, 37.0622, –80.8363, 2.vii.2014, coll. Holly Wantuch, ex. Pineus strobi on Pinus strobus (1 larva [molecular voucher], YPM; ENT906874). Wythe Co., Speedwell, Mt. Rogers National Recreation Area, 36.7722, –81.1752, 23.vi.2014, coll. Holly Wantuch, ex. Pineus strobi on Pinus strobus (1larva [molecular voucher],YPM;ENT906876). WASHINGTON. Clallam Co.,Blyn, 48°04.120’N 122°57.400’W, 2.iv.2005, coll. Glenn Kohler (1 ♀ (SDG dissection 1384), CSCA), 9.vi.2005 (1 ♂ (SDG dissection 1274), CSCA). Seguim, 48°06.480’N 123°12.580’W, 25.vii.2005, coll. Glenn Kohler (1 ♀, CSCA). Clark Co., Vancouver, 45.7037, –122.6695, 23.x.2012, coll. Glenn Kohler, ex. Adelges tsugae on Tsuga heterophylla (2 larvae [molecular voucher], YPM; ENT856464, ENT856471). Island Co., Coupeville, 48°12.050’N 122°37.550’W, 26.vii.2005, coll. Glenn Kohler (2 ♂, CSCA). King Co., Vashon, 47°27.200’N 122°26.950’W, 9.vi.2005, coll. Glenn Kohler (1 ♀, CSCA). Pierce Co., Ruston, 47°18’02.86”N 122°31’01.31”W, 7.vii.2010, coll. S.M. Grubin, ex. reared, Adelges tsugae on Tsuga heterophylla, S. Grubin sample SU147, Specimen #10F867 (1 ♂ with puparium [molecular voucher], CSCA), 22.vii.2010, Specimen #10F876 (1 ♂ with puparium, CSCA-FTC). Tacoma, 47°16’41.02”N 122°31’01.69”W, 21.vi.2010, coll. S.M. Grubin, ex. Adelges tsugae on Tsuga heterophylla, S. Grubin sample L28 (1 ♀ with puparium, CSCA), 7.vii.2010, S. Grubin sample L40 (1 ♂ with puparium, CSCA), 22.vii.2010, S. Grubin sample L42, Specimen #10F877 (1 ♀ with puparium, CSCA-FTC), no date, S. Grubin sample L54 (1 ♀ with puparium, CSCA). Tacoma, Point Defiance, 47°18.246’N, 122°30.979’W, 4.v.2010, coll. S.M. Grubin, ex. reared, Adelges tsugae on Tsuga heterophylla, S. Grubin sample SP047, Specimen #10F694 (1 ♀ with puparium, CSCA-FTC), S. Grubin sample SP059, Specimen #10F693 (1 ♀ with puparium, CSCA-FTC), 20.v.2010, Specimen #10F674 (1 ♂ with puparium [molecular voucher], CSCA), Specimen #10F675 (1 ♂ with puparium, CSCA-FTC), S. Grubin sample L20, Specimen #10F679 (1 ♀ with puparium, CSCA-FTC), S. Grubin sample L22, Specimen #10F681 (1 ♀ with puparium, CSCA-FTC), S. Grubin sample L24, Specimen #10F680 (1 ♀ with puparium, CSCA-FTC), S. Grubin sample SP075, Specimen #10F683 (1 ♂ with puparium [molecular voucher], CSCA), S. Grubin sample SP077, Specimen #10F682 (1 ♂ with puparium [molecular voucher], CSCA), 4.vi.2010, Specimen #10F671 (1 ♂ with puparium [molecular voucher], CSCA), Specimen #10F672 (1 ♂ with puparium, CSCA-FTC), Specimen #10F673 (1 ♂ with puparium, CSCA), S. Grubin sample SP079, Specimen #10F700 (1 ♂ with puparium [molecular voucher], CSCA). Tacoma, Point Defiance, 47°16’41.02”N, 122°31’1.69”W, 20.v.2010, coll. S.M. Grubin, ex. reared, Adelges tsugae on Tsuga heterophylla , Specimen #10F659 (1 ♂ with puparium [molecular voucher], CSCA), Specimen #10F660 (1 ♀ with puparium [molecular voucher], CSCA), Specimen #10F661 (1 ♀ with puparium, CSCA), 7.vii.2010, S. Grubin sample L38, Specimen #10F881 (1 ♂ with puparium, CSCA-FTC). Tacoma, 47°16’49.80”N, 122°30’58.96”W, 24.iv.2010, coll. S.M. Grubin, ex. reared, Adelges tsugae on Tsuga heterophylla, S. Grubin sample SP009, Specimen #10F688 (1 ♀, CSCA-FTC), S. Grubin sample SP029, Specimen #10F687 (1 ♀ with puparium, CSCA-FTC), 4.v.2010, S. Grubin sample SP064, Specimen #10F702 (1 ♂ with puparium [molecular voucher], CSCA), 9.iv.2010, S. Grubin sample SP011, Specimen #10F686 (1 ♀ with puparium, CSCA), S. Grubin sample SP013, Specimen #10F685 (1 ♀, CSCA-FTC), S. Grubin sample SP017, Specimen #10F684 (1 ♀, CSCA-FTC), 22.vii.2010, S. Grubin sample L56 (1 ♀ with puparium, CSCA), Specimen #10F875 (1 ♂ with puparium, CSCA-FTC). Thurston Co., Olympia, 47°01’03.42”N, 122°54’10.50”W, 24.iv.2010, coll. S.M. Grubin, ex. reared, Adelges tsugae on Tsuga heterophylla, S. Grubin sample SP025, Specimen #10F699 (1 ♀ with puparium [molecular voucher], CSCA), S. Grubin sample SP039, Specimen #10F695 (1 ♂ with puparium, CSCA), Specimen #10698 (1 ♂ with puparium [molecular voucher], CSCA), S. Grubin sample SP041, Specimen #10F697 (1 ♂ with puparium [molecular voucher, CSCA), S. Grubin sample SP042, Specimen #10F696 (1 ♂ with puparium, CSCA), 5.v.2010, Specimen #10F676 (1 ♂ with puparium [molecular voucher], CSCA), Specimen #10F677 (1 ♀ with puparium [molecular voucher], CSCA), S. Grubin sample SP060, Specimen #10F691 (1 ♂ with puparium, CSCA-FTC), S. Grubin sample SP062, Specimen #10F690 (1 ♀ with puparium, CSCA-FTC), S. Grubin sample SP063, Specimen #10F689 (1 ♂ with puparium, CSCA-FTC), S. Grubin sample SP065, Specimen #10F692 (1 ♀ with puparium, CSCA), 20.v.2010, Specimen #10F662 (1 ♂ with puparium, CSCA), 21.vi.2010, S. Grubin sample SU088, Specimen #10F869 (1 ♂ with puparium [molecular voucher], CSCA), 22.vii.2010 (1 ♂, CSCA). Olympia, 47°02.454’N 122°54.054’W, 8.vii.2009, coll. S.M. Grubin, ex. reared from Adelges tsugae, N. Havill sample 10-01, Specimen #10F131 (1 ♂ [molecular voucher], CSCA), N. Havill sample 10-04, Specimen #10F132 (1 ♂ [molecular voucher], CSCA), 24.vi.2009, N. Havill sample 10-03, Specimen #10F130 (1 ♂ [molecular voucher], CSCA), no date, S. Grubin sample L30, Specimen #10F873 (1 ♂ with puparium, CSCA-FTC). Tumwater, Tumwater Falls Park, 47.0379, –122.896521, vi.2013, coll. D. Ross, (2 larvae, 3 adults [molecular voucher], YPM; ENT856591, ENT856601 (larvae), YPM; ENT856419, ENT856425, ENT856427). Pierce, King, and Thurston Cos., 11.iv–25.v2015, from lab colony, coll. D. Ross, A.Arsenault, (4 adults [molecular voucher], YPM; ENT791609, ENT791540, ENT791572, ENT791575). WYOMING. Teton Co., Caribou-Targhee National Forest, 43.7047, –110.9847, 18.x.2017, coll. Laura Lowrey, ex. Pineus abietinus on Abies lasiocarpa (5 puparia [molecular voucher], YPM; ENT996085–89).

Figures

FIGURE 1. Immature stages of Leucotaraxis species. A. L. atrifacies, egg, dorsal view, posterior pole right (measure bar = 0.1 mm). B–C. L. argenticollis, puparium, dorsal view: B. habitus (measure bar = 0.2 mm); C. posterior spiracles. D. L. piniperda, puparial posterior spiracles, dorsal view.

FIGURE 2. Leucotaraxis species. A–B. L. argenticollis: A. head and thorax, lateral view; B. head, anterior view. C–D. L. atrifacies: C. head and anterior thorax, lateral view; D. head, anterior view. E–H. L. piniperda: E. head and thorax, lateral view; F–H. heads, anterior view: F. eastern form; G. mixed form; H. western form.

FIGURE 3. Terminalia of Leucotaraxis species. A–C. Male, phallus, oriented with distal part right (measure bar = 0.1 mm): A. L. argenticollis; B. L. atrifacies; C. L. piniperda. D–H. Female, terminalia. D–E. L. argenticollis: D. ventral view; E. dorsal view. F–G. L. atrifacies: F. ventral view; G. dorsal view. H. L. piniperda, dorsal view. Numbers to the left indicate segments (D, F are sternites; E, G, H are tergites).