Lasioglossum anhypops McGinley 1986

Lasioglossum anhypops

TYPE MATERIAL.—The female holotype of L. anhypops is the property of the California Insect

Survey, University of California, Berkeley, but is on loan deposit to the California Academy of Sciences in San Francisco. The specimen is in excellent condition and is labeled

Echo Lake El Dorado Co.[unty] California] VII[july]-9 1954/W.W. Middlekauff Collector/HOLOTYPE Lasioglossum anhypops R.J. McGinley [red label].

One hundred paratypes (73, 27)listed in the “Specimens Examined” section are designated.

ETYMOLOGY.—The specific epithet is a reference to the uniqueness of this species among members of the trizonatum group in being only rarely associated with phoretic mites (hypopodes).

DISTRIBUTION (Figure 669).—Lasioglossum anhypops occurs from southern British Columbia, including Vancouver Island, south through the Cascade Range of Oregon and through the Sierra Nevada to Los Angeles and San Bernardino counties in California. To the east, specimens have been taken in central Montana, Wyoming, and south to northern Utah. The occurrence of specimens in the San Francisco Bay area is unusual, but a few accurately determined specimens have been observed.

DIAGNOSIS.—The strongly, often sharply excavated lateral edge of tergum II (Figure 154) and the lack of an acarinarium on the anterior surface of tergum I (Figure 85) will distinguish females of L. anhypops from all other known species of Lasioglossum. Females of L. trizonatum have a similar tergal edge but have an acarinarium (Figure 711) and much longer heads (Figure 709, length/width ratio x = 0.97, n = 25 v. Figure 670, length/width ratio x = 0.93, n = 15). Lasioglossum coriaceum females also have a strongly excavated tergal edge but have an acarinarium (Figure 72) and occur only in eastern United States (Figure 353).

Many males of L. anhypops can be recognized by their flat clypeal surfaces, which lack an apical yellow maculation. In other species where the clypeus is entirely dark, the clypeal surface is broadly rounded (e.g., L. pacificum, L. olympiae). Males having the yellow clypeal maculation can be very difficult to diagnose, being best recognized by the very short, inconspicuous vestiture on sternum V (Figure 676).

DESCRIPTION.—FEMALE: (1) Length 8.2–10.1 mm (x = 9.0, n = 15); (2) wing length 2.3–2.8 mm (x = 2.6, n = 15); (3) abdominal width 2.5–3.0 mm (x = 2.8, n = 15).

Structure: (4) Head elongate (Figure 670; length/width ratio 0.88–1.0, x = 0.93, n = 15). (7) Supraclypeal area evenly rounded, (8) moderately protuberant. (9) Clypeus projecting approximately its full length below lower margin of eyes; (10) surface with obscure median longitudinal sulcation present in most specimens. (14) Distance between lateral ocelli subequal to distance between lateral ocellus and eye. (23) Flagellomere 1 subequal to 2 in length along dorsal surface. Labrum as in Figure 672; (27) distal keel moderately narrow, parallel-sided; (28) distal lateral projections well developed, triangular; (29) most fimbrial setae narrowly rounded apically, not sharply pointed.

(32) Pronotal lateral angle narrowly obtuse; (33) pronotal lateral ridge incomplete, interrupted by oblique lateral sulcus; (34) lower portion of lateral ridge narrowly rounded. (35) Mesoscutal lip weakly bilobed, (36) moderately elevated from pronotum. (40) Dorsal surface of propodeum about 0.88 the length of scutellum and about 1.7 times the length of metanotum, (41) slightly depressed centrally, (42) posterior margin rounded; (43) propodeal triangle not defined laterally, evident medially as an inconspicuously V-shaped elevation without lateral rims; (44) lateral carinae extending at most to midpoint of posterior surface. (45) Tibial spur as in Figure 17.

(46) Lateral edge of metasomal tergum II strongly excavated, concave posteriorly, convex anteriorly with median area sharply angulated (Figure 154) or rounded (similar to Figure 115).

Sculpture: (47) Face shiny, (48) densely punctate below ocelli, punctures contiguous, becoming larger and less dense near antennae. (51) Supraclypeal area polished; (52) punctures separated by 1–2 times their width, becoming impunctate centrally. (53) Clypeus obscurely granulate basally, apical half polished; (54) punctures separated by their width or less basally, apical third sparsely punctate with large impunctate areas. (56) Mesoscutum moderately shiny; (57) punctation as in Figure 675, punctures separated by their width or less laterally and anteriorly, much less dense centrally, punctures 2–3 times their width apart. (58) Scutellum somewhat sparsely punctate adjacent to median line, punctures 1–2 times their width apart. (63) Dorsal surface of propodeum (Figure 674) striolate laterally becoming finely ruguloso-striolate medially, striae reaching posterior margin; (64) surface alveolated. (65) Metasomal tergum I moderately shiny; (66) punctation fine, dense, punctures slightly less than their width apart.

Coloration: (71) Wing membrane mostly hyaline, very obscurely pigmented in marginal cell.

Vestiture: (74) Pubescence of head yellowish white. (75) Pubescence of thorax yellowish white; (76) mesoscutal hairs moderately dense and plumose. (77) Hind tibial hairs concolorous, pale yellowish brown. (78) Anterior hairs of metasomal tergum I yellowish white, (79) basal hair bands of terga II–IV white. (80) Acarinarium absent (Figure 85), elongate hairs scattered over anterior surface of tergum I.

MALE: Similar to female except as follows: (1) length 6.7–8.5 mm (x = 7.5, n = 15); (2) wing length 2.1–2.4 mm (x = 2.2, n = 15); (3) abdominal width 1.8–2.2 mm (x = 2.0, n = 15). (4) Head as in Figure 671 (length/width ratio 0.87–0.96, x = 0.93, n = 15). (5) Gena slightly wider than eye, (6) moderately produced posteriorly. (10) Clypeal surface shallowly depressed ventrally. Labrum as in Figure 673; (24) distal process absent; (25) basal area depressed medially; (26) basal lateral depressions absent. (30) Mandible short, just reaching opposing clypeal angle. (53) Clypeus polished; (54) punctures well formed and dense basally, very fine and scattered over apical two-thirds. (68) Clypeal maculation present or absent. (69) Flagellum entirely dark. (72) Tarsi dark, concolorous with tibiae.

Vestiture: Sternal vestiture as in Figure 676; (82) hairs on sternum IV moderately elongate, erect; (83) vestiture of sternum V mostly inconspicuous, with obscure median rosette of short hairs and small patch of moderately short, erect hairs near base.

Terminalia: Sterna VII–VIII similar to Figure 706; (85) sternum VIII with short, narrowly rounded median process. Genitalia as in Figures 677–680; (86) gonobase moderately elongate; (87) gonostylus moderately robust, narrowly rounded apically; (89) retrorse membranous lobe moderately slender; (90) volsella with prominent lateral lobe.

FLIGHT RECORDS (Figure 681).—Nearly all females of L. anhypops have been collected from May through October, with 82% of the records coming from June and July, with a peak in late June (northwestern records peak in early July). One female was taken in Lee Vining, Mono County, on 7 March 1933. The four female records from October were from San Bernardino and Shasta counties, California, and Whitman County, Washington. Males have been taken from July through September, with 56% of the records from August.

FLOWER RECORDS.—Females (77): Hydrophyllaceae 21%; Ericaceae 10%; Salicaceae 9%; Scrophulariaceae 9%. Males (64): Compositae 77%. Total: 141 in 21 families, 37 genera as follows:

Achillae 1 Agastache 1 Apocynum 1 Arctostaphylos 8 Aster 2, 6 Astragalus 1 Chrysopsis 6 Chrysothamnus 1, 11 *Epilobium 2 Erigeron 2 Eriogonum 2, 2 *Erysimum 4(1); Geranium 1 Gutierrezia 3 Haplopappus 3 Helenium 1 Horkelia 1 Iris 2 Juniperus 6 Lonicera 3 Lupinus 1 Mentzelia 1 Montia 2 *Pentstemon 7(1) *Phacelia 16(14) Phlox 2 Polemonium 1 Pontentilla 4 7 Prunus 3 *Purshia 1(1) Ranunculus 1 *Ribes 4(2) Rubus 1 Salix 7 Senecio 2 Solidago 10 *Taraxacum 1(1)

MITE ASSOCIATES.—Although females of L. anhypops lack an acarinarium, a few females did have hypopodes on the anterior surface of tergum I. These amounted to only 15 out of 613 specimens examined, or 2.7%. The mites were attached to the tergal surface between the elongate hairs that cover tergum I. None of the 262 males of L. anhypops examined carried mites.

SPECIMENS EXAMINED.—Paratypes (73, 27).

CANADA. BRITISH COLUMBIA: Princeton, 4 mi W (Yale Region), VI-3-1957, E.l. Schlinger (1 UCD).

UNITED STATES. CALIFORNIA: Alpine Co.: Carson Pass, IX-11-38. M. Cazier (1, AMNH); Hope Valley, VII-9-48, one collected by P.D. Hurd. Jr., one byJ.W. MacSwain (2, UCB); Winnemuca Lake, VII-14-64, M. Irwin (1 UCR). El Dorado Co.: Meyers, VII-11-1952, M.A. Gazier, W. Gertsch. R. Schrammel (1 AMNH); State Line, IX-1-1963, R.L. MacDonald (1 UCD). Fresno Co.: Kaiser Pass, VI-29-1961. G.I. Stage, R.R. Snelling (1 LACM). Lassen Co.: Bridge Cr.[eek] Camp, VII-9-49, W.H. Wade (1 UCB), VII-14-54, G. Schaefers (1 UCB); Hat L.[ake], Lassen Nat.(ional) Park, on Salix, VI-3-41, C.D. Michener (2 UCB): Susan R.[iver] Camp, VII-10-49, D. Cox (1 UCB). Mono Co.: Leavitt Meadows, VI-26-1937, ex. coll.[ection] M.A. Cazier (2 AMNH); Mammoth, Valentine R[a]nch. Reserve Sagebrush Site, on Purshia tridentata, 25 Jun 1971, David Graves (1 CU); Rock Creek, VI-23-1937, ex. coll.[ection] M.A. Cazier (1 AMNH); Sonora Pass, VI-27-51, P.D. Ashlock (1 USNM), E side Sonora Pass, 9000′, VI-30-1961, J.G. Rozen (1 AMNH); Tom's Place, 1 mi W, two on Chamaebatiaria millefolium, VIII-13-54, D.D. Linsdale (3 UCB); W[est] Walker R[iver], on Aster, Vi-25-1937, C.D. Michener (1 KU).

Nevada Co.: Hobart Mills, 1 mi S, on Chrysothamnus viscidiflorus ssp. typicus, IX-1-57, E.G. Linsley (1 UCB); Sagehen, near Hobart Mills, VI-25-54, R.C. Blaylock (1 UCD), VI-25-1966, P.B. Schultz (2 UCD), VII-21-54, R.M. Bohart (1 UCD), VIII-26-52, R.F. Smith (1 UCB); Sagehen Creek, VI-25-1966, M.A. Chambers (1; UCD), VI-27-72, S.F. Casey (1; UCD), IX-5-1968, R.M. Bohart (1; UCD); Sagehen Creek, near Hobart Mills, VI-18-62, R.J. Gill (1; UCD), VI-23-62, E.J. Montgomery (1; UCD), VI-28-62, M.E. Irwin (2; UCD), VI-29-62, R.M. Bohart (1; UCD), VII-1-1964, M.E. Irwin (1; UCD), VII-5-62, M.E. Irwin (4; UCD); Truckee, 2 mi N, on Haplopappus Bloomeri angustatus, IX-5-57, E.G. Linsley (1; UCB), 4 mi N, on Chrysothamnus viscidiflorus ssp. typicus, IX-5-57, E.G. Linsley (1; UCB). San Bernardino Co.: Barton Flat (S. Fork Camp), 1, 2, 21, 24/9/44, A.L. Melander (4; UCR); Buff Lake, 7-28-57, J.R. Northern (1; LACM); Camp O-ongo (nr Running Springs, S.[an] Bdno.[Bernardino] Mts.), 8–12 Aug 1966, C.L. Hogue (2; LACM); Cedarpines, 1 mi W, on Erysimum asperum, V-26-66, J.C. Hall (1; UCR); Fawn-skin, 28 Jul 1961, G.C. Eickwort (5; MSUEL), 29 Jul 1961, G.C. Eickwort (1; MSUEL); Lake Arrowhead, VIII-1-64, E.I. Schlinger (1; UCR); Sta.[Santa] Ana (S. Fork), 31 Jul 42, A.L. Melander (2, UCR), Sta.[Santa] Ana (S. Fks[Forks?]), 16/6/45 (1), 17/6/45 (1), 18/6/45 (2), 19/6/45 (1), A.L. Melander (5; UCR), Sta.[Santa] Ana Riv.[er], (Up), 5-IX-53, A.L. Melander, A.L. Melander Collection (1; USNM), 16/9/48, A.L. Melander (1; UCR).

San Mateo Co.: Portola, Corn.[ell] Univ.[ersity] Exped.[ition], Lot 542, Sub, IX-5-1917, R.C. Shannon (1; CU). Sierra Co.: Independence, VII-20-54, R.C. Blaylock (1; UCD); Webber Lake, VII-2-59, J.M. Linsley (1; UCB); Yuba Pass, VII-8-1952, M. Cazier, W. Gertsch, R. Schrammel (1; AMNH). Tuolumne Co.: Strawberry, Vi-21-1957, Donald L. Flaherty (1; UCR), VI-22-1957, W.T. Crites (2, UCD), VI-23-51, S.M. Kappos (1, UCD), VIII-28-60, E. Jessen (1; UCB). County not specified: Carnelian Bay (Lake Tahoe), VI-24-54, R.C. Blaylock (1; UCD); Fish Camp, VII-14-1948, H.M.G. & D. Townes (1, KU); Lake Tahoe, 21-6-53, A.L. Melander, A.L. Melander collection (1; USNM); Porcupine Flat, Yo.[semite] P[ar]k, VIII-3-62, R. & K. Dreisbach (1; MSUEL); Riverton, VI-28-1961, M.E. Irwin (1; UCD); Yosemite Park, Glac.[ier] P[oin]t. Road, 1-VII-47, A.L. Melander (1; UCR). IDAHO: [Franklin Co.:] Giveout, 6700 ft alt., About 42°24′N, 111 ° 10′W, F 4740, 7 Jul 1920 (1; AMNH).

MONTANA: Carbon Co.: E.[ast] Rosebud Cyn.[Canyon], 5700′, 30 Jun 1966, B. & C. Durden (1; AMNH). Rav[alli] Co.: Skalkaho Pass, 24 Jul 1949, C.B. Philip, McDermott (1; KU). OREGON: Bonner Co.: Sandpoint, VI-21-1955, R.M. Bohart (1; UCD). Deschutes Co.: Paulina Lake, elev.[ation] 6300 feet, 14 Jul 1962, R.W. Matthews (1), G.C. Eickwort (2), R.L. Fischer (1) (4; MSUEL); Sisters, VI-24-1954, J.C. Downey (1; UCD). Hood River Co.: Mt. Hood, 7-18-31, M.W. Sanderson (1; KU). Lake Co.: Middle Fork [of] Crooked Creek (Warner Mts.), VIII-3-1968, R.F. Denno, D.R. Miller (3; UCD); Silver Lake, 12 mi SW, 15 Jul 1962, G.C. Eickwort (1; MSUEL). Lane Co.: Oakridge, 10 mi NE, 15 Jul 1959, G.C. Kettunen (2; MSUEL). Linn Co.: Upper Soda, 6 mi E (Iron Mt), Elev.[ation] 5000 feet, 18 Jul 1962, G.C. Eickworth (1; MSUEL).

Additional localities recorded (775 specimens, 540, 235.

CANADA. BRITISH COLUMBIA: Bamberton Provincal Park (3 mi S Mill City, Vancouver Island), Creston, Fish Lake (Summerland), Fitzgerald, Oliver, Robson, Saanich, Salmon Arm, Vancouver Island, Victoria.

UNITED STATES. CALIFORNIA: Alameda Co.: Berkeley; Alpine Co.; Calaveras Co.: Camp Wolfboro, Dorrington, 8 mi NE; Eldorado Co.; Fresno Co.; Inyo Co.: Whitney Portal; Kern Co.: Mt. Pinos; Lassen Co.; Los Angeles Co.: Crystal Lake, San Gabriel Mts. (Blue Ridge); Madera Co.: meadow near locked gate on road to Mark Mine, SE slope Green Mt.; Mariposa Co.: Miami Ranger Station; Modoc Co.; Mono Co.; Nevada Co.; Placer Co.; Plumas Co.; San Bernardino Co.; Santa Cruz Co.: Bear Valley, Santa Cruz Mts., Big Basin; Shasta Co.; Siskiyou Co.; Sierra Co.; Stanislaus Co.: Evergreen Road, 3.2 mi W Hwy 120; Tehama Co.: Government Flat; Trinity Co.: Big Flat (Coffee Creek), Fawn Lodge; Tulare Co.; Tuolumne Co.; Ventura Co.: Mt. Pinos. IDAHO: Boise Co.: Bannock Creek (5 mi SE Idaho City); Bonner Co.: Sandpoint, 7–8 mi E; Franklin Co.: Cub River Canyon, Willow Flat; Idaho Co.: Grangeville (Moose Creek Ranger Station); Shoshone Co.: Avery, 4 mi N; Valley Co.: Cascade, 7.4 mi E.

MONTANA: Carbon Co.: East Rosebud Lake; Fergus Co.: Lewiston, 15 mi SSW; Gallatin Co.: West Yellowstone; Granite Co.: Clinton, 16 mi S. NEVADA. Douglas Co.: Carson City; Washoe Co.: Mt. Rose. OREGON. Baker Co.: Big Creek (26 mi SE Union), Cornucopia; Boise Co.: Garden Valley, 3 mi NE; Deschutes Co.: Bend (10 mi W), Three Creeks Meadow (15 mi S Sisters); Grant Co.: Dixie Butte, Strawberry Mt.; Harney Co.: Antelope Butte; Hood River Co.: Government Camp, Mt. Hood (including Cloud Cap Inn, Cooper's Spur, Homestead Inn); Jackson Co.: Mt. Ashland; Klamath Co; Marion Co.: Silver Creek Park; Union Co.: Ladd Canyon (14 mi S La Grande), Union, 26 mi SE (Lower Lick Creek), 28 mi SE (Upper Lick Creek), 36 mi SE (Lower Goose Creek); Wallowa Co.: Tollgate, 20 mi N. UTAH. Box Elder Co.: Willard, Willard Peak; Cache Co.: Logan Canyon, Mantua (10 mi S), Tony Grove Canyon. WASHINGTON. Asotin Co.: Fields' Spring State Park; Pierce Co.: Mt. Rainier; Whitman Co.: Pullman. WYOMING. Fremont Co.: Lander, 11 mi S (Frye Lake), 28 mi SW (Louis Lake); Lincoln Co.: Smoot, 12 mi SE; Sheridan Co.: Mts. near Sheridan; Teton Co.: Jackson Hole, Jenny Lake.