Lasioglossum (Dialictus) cembrilacus Gardner & Gibbs 2020, sp. nov.

Lasioglossum (Dialictus) cembrilacus sp. nov. urn:lsid:zoobank.org:act: 082AC082-F9FB-47A1-9779-9867AF24F57D Figs 19–21, 92B Diagnosis Females of Lasioglossum cembrilacus sp. nov. can be easily recognized by the body mostly covered in extremely dense, long, yellowish, plumose hairs and tomentum, mesothorax shiny and densely punctate (i ≤ 1 pd), face relatively long (length/width ratio ~0.84), and metasomal terga sometimes with metallic green reflections. They are most similar to Lasioglossum albohirtum (Crawford, 1907) (see Gibbs 2010 for a redescription of this species). Females of L. albohirtum have the hair of the paraocular area shorter and sparser, scutum slightly more sparsely punctate (i= 1–2 pd), and metasoma and clypeus apical margin never red or orange. Males of L. cembrilacus sp. nov. can be recognized by the tomentum long and dense in the lower paraocular area and absent or very sparse over the rest of the body, red or orange colouration largely absent except on ventral surface of flagellum, propodeum dorsolateral slope shiny and distinctly punctate, flagellomeres relatively long (F2 about 2 times as long as F1), mesepisternum and metasomal terga relatively densely punctate (i ≤ 1 and i= 1–2 pd, respectively), and metasomal terga with weak metallic green reflections at least in basal half of T1. They are most similar to L. zephyrus (Smith, 1853), L. pictum, and L. decorum sp. nov. Males of L. zephyrus and L. pictum have the propodeum dorsolateral slope rugulose and face with more extensive tomentum. Males of L. decorum sp. nov. have the flagellomeres relatively short (F2 about 1.5 times as long as F1), face without tomentum, frons dull, and mesepisternum and metasomal terga more sparsely punctate (i= 1–2 and 1–4 pd, respectively). Etymology The specific epithet cembrilacus is formed from the New Latin noun ‘ cembra ’ (‘timber’, especially in reference to the tree Pinus cembra L.) plus the Latin genitive noun ‘ lacus ’ (lake; spelled identically in both nominative and genitive case). It is both a dedication to Philip Hunter Timberlake, and a reference to this species’ mountain habitat with its many pines and lakes. An appropriate translation would be Timberlake’s sweat bee. Material examined Holotype UNITED STATES – California • ♀; Mariposa Co., 1.7 mi. SE by E of Ostrander Rocks; 37.679° N, 119.567° W; 2091 m a.s.l.; 3 Jul. 2005; H. Ikerd leg.; PCYU. [Verbatim label: USA CA Mariposa Co. 1.7 mi. SEbyE Ostrander Rocks 2091 m 11S E273625 N4173300 3 Jul05 PnTrp fl ylw, H.W.Ikerd / BBSL613033 // 1845A10 // HOLOTYPE / Lasioglossum (Dialictus) cembrilacus Gardner and Gibbs] Paratypes UNITED STATES – California • 1 ♀; Mariposa Co., 1.8 mi. SE by E of Ostrander Rocks; 37.6768° N, 119.5669° W; 2096 m a.s.l.; 28–29 Jul. 2005; L. Fuerst leg.; PCYU • 2 ♀♀; Plumas Co., 14 mi. W of Johnsville; [39.76° N, 120.96° W]; 15 Jul. 1967; J. S. Buckett leg.; UCDC • 1 ♀; Amador Co., 2 mi. SW of Silver Lake; [38.67° N, 120.11° W]; 20 Aug. 1949; C.D. MacNeill leg.; EMEC • 1 ♀; El Dorado Co., 2 mi. S of Meyers; [38.83° N, 120.02° W]; 24 Jul. 1955; E.I. Schlinger leg.; UCDC • 1 ♀; Alta; [39.21° N, 120.81° W]; 29 Jun. 1933; BBSL • 1 ♀; Siskiyou Co., Ash Creek Ranger Stn, 9 mi. E of McCloud; [41.262° N, 121.95° W]; 1067 m a.s.l.; 13–16 Jun. 1974; D. Green leg.; EMEC • 1 ♀; same location as for preceding; 7–9 Jun. 1974; D. Green leg.; ex Ceanothus velutinus; EMEC • 1 ♀; same location as for preceding; 7–9 Jun. 1974; J. Powell leg.; ex Ceanothus cordulatus; EMEC • 1 ♀; same location as for preceding; 7–9 Jun. 1974; J. Powell leg.; EMEC • 1 ♀; same location as for preceding; 7–9 Jun. 1974; R. Coville leg.; ex Ceanothus cordulatus; EMEC • 3 ♀♀; same location as for preceding; 7–9 Jun. 1974; J. Chemsak leg.; EMEC • 1 ♀; Tehama Co., Battle Creek Meadows; [40.34° N, 121.6° W]; 1554 m a.s.l.; 17 Jun. 1967; R.F. Denno leg.; UCDC • 3 ♂♂; Plumas Co., Big Bear Lake; [39.685° N, 120.67° W]; 2103 m a.s.l.; 19 Aug. 1978; N.J. Smith leg.; UCDC • 2 ♀♀; Shasta Co., Big Spring; [40.643° N, 121.468° W]; 23 May 1941; C.D. Michener leg.; EMEC • 4 ♀♀; Glenn Co., Black Butte; [39.73° N, 122.87° W]; 1981–2134 m a.s.l.; 14 Jun. 1972; D. Veirs leg.; EMEC • 1 ♀; El Dorado Co., Blodgett Forest, 13 mi. E of Georgetown; [38.89° N, 120.65° W]; 1 Jul. 1967; W.J. Turner leg.; EMEC • 1 ♀; Placer Co., Brockway; [39.23° N, 120.01° W]; Jul. 1941; G.E. Bohart leg.; BBSL • 1 ♀; Plumas Co., Buck’s Lake; [39.87° N, 121.17° W]; 1 Jul. 1949; J.W. MacSwain leg.; EMEC • 1 ♀; same location as for preceding; 1 Jul. 1949; E.I. Schlinger leg.; UCDC • 2 ♀♀; Placer Co., Carnelian Bay, Lake Tahoe; [39.23° N, 120.08° W]; 8 Jul. 1964; C. Slobodchikoff leg.; CAS • 1 ♀; Carnelian Bay, Lake Tahoe; [39.23° N, 120.08° W]; 24 Jun. 1954; R.H. Goodwin leg.; EMEC • 2 ♀♀; same location as for preceding; 17 Jun. 1958; R.M. Bohart leg.; UCDC • 1 ♀; El Dorado Co., China Flat; [38.754° N, 120.269° W]; 28 Jun. 1948; P.D. Hurd leg.; EMEC • 1 ♀; Tuolumne Co., Chipmunk Flat; [38.325° N, 119.69° W]; 1 Jul. 1962; J. Powell leg.; EMEC • 1 ♀; same location as for preceding; 13 Jun. 1962; C.A. Toschi leg.; EMEC • 1 ♀; Cinder Cone, Lassen Nat. Park; [40.547° N, 121.32° W]; 19 Jun. 1941; ex Ribes; EMEC • 1 ♀; Nevada Co., Donner Pass; [39.32° N, 120.32° W]; 4 Jul. 1962; J. Powell leg.; EMEC • 1 ♀; Trinity Co., Eagle Creek; [41.13° N, 122.7° W]; 13 Jul. 1949; A.T. McClay leg.; UCDC • 1 ♀; same location as for preceding; 13 Jul. 1949; A.T. McClay leg.; UCDC • 1 ♀; Calaveras Co., Garnet Hill; [38.48° N, 120.25° W]; 16 Jun. 1957; H.K. Court leg.; UCDC • 3 ♀♀; Sierra Co., Gold Lake; [39.68° N, 120.64° W]; 26 Jul. 1921; C.L. Fox leg.; CAS • 2 ♀♀; Hat Lake, Lassen Nat. Park; [40.509° N, 121.466° W]; 3 Jun. 1941; P.D. Hurd leg.; ex Salix; EMEC • 3 ♀♀; same location as for preceding; 3 Jun. 1941; EMEC • 1 ♀; same location as for preceding; 3 Jun. 1941; C.D. Michener leg.; EMEC • 2 ♀♀; same location as for preceding; 3 Jun. 1941; C.D. Michener leg.; ex Salix; EMEC • 5 ♀♀; same location as for preceding; 3 Jun. 1941; C.D. Michener leg.; ex Arctostaphylos; EMEC • 15 ♀♀; Alpine Co., Hope Valley; [38.75° N, 119.94° W]; 22 Jul. 1955; E.E. Gilbert and N.A. Walker leg.; EMEC • 2 ♀♀; same location as for preceding; 9 Jul. 1948; J.W. MacSwain leg.; EMEC • 1 ♀; Fresno Co., Huntington Lake; [37.25° N, 119.2° W]; 4–5 Jul. 1919; F.E. Blaisdell leg.; CAS • 22 ♀♀; Sierra Co., Independence Lake; [39.45° N, 120.3° W]; 19 Jul. 1978; N.J. Smith leg.; UCDC • 1 ♀; Alpine Co., Indian Creek L.; [38.74° N, 119.78° W]; 15 Jun. 1979; G.E. Bohart leg.; BBSL • 1 ♀; Tulare Co., Jackson Meadow; [35.966° N, 118.626° W]; 27 Jun. 2000; J.S. Ascher leg.; AMNH • 1 ♀; Tulare Co., Jackson Meadow; 35.966° N, 118.626° W; 27 Jun. 2000; J.S. Ascher leg.; AMNH • 1 ♀; Lake Tahoe; [39.2° N, 120.1° W]; 1897 m a.s.l.; 16 Jul. 1949; E.G. Linsley leg.; ex Solidago sp.; EMEC • 1 ♀; Inyo Co., Lone Pine Canyon; [36.59° N, 118.23° W]; 16 Jul. 1952; BBSL • 1 ♀; Mariposa Co., Merced Lake Trail, 1.9 mi. E by N of Bunnell Pt.; 37.744° N, 119.432° W; 2141 m a.s.l.; 3 Jun. 2005; H. Briggs and E. Stephens leg.; PCYU • 1 ♀; Siskiyou Co., Mount Shasta; [41.34° N, 122.25° W]; 1829 m a.s.l.; 13 Jul. 1958; J. Powell leg.; EMEC • 1 ♀; Trinity Co., Mountain Meadow Ranch head Coffee Creek; [41.08° N, 122.94° W]; 1554 m a.s.l.; 8–10 Jul. 1969; C. Slobodchikoff leg.; EMEC • 2 ♀♀; Nevada Co., near Hobart Mills; [39.4° N, 120.18° W]; 18 Jun. 1962; F.D. Parker leg.; UCDC • 1 ♀; Shasta Co., Old Station; [40.675° N, 121.431° W]; 16 Jun. 1941; EMEC • 1 ♀; El Dorado Co., Pino Grande, SW of Lake Edson; [38.87° N, 120.62° W]; 29 Jun. 1967; J. Powell leg.; EMEC • 12 ♀♀; Glenn Co., Plaskett Meadows; [39.726° N, 122.845° W]; 1920 m a.s.l.; 14 Jun. 1972; J. Doyen leg.; ex Cistanthe umbellata; EMEC • 1 ♀; Glenn Co., Plaskett Meadows; [39.726° N, 122.845° W]; 1890 m a.s.l.; 3 Jul. 1960; J. Powell leg.; EMEC • 3 ♀♀; same location as for preceding; 3 Jul. 1960; J. Powell leg.; EMEC • 1 ♀; Nevada Co., Russell Vly; [39.43° N, 120.1° W]; 26 Jun. 1964; D.F. Veirs leg.; BBSL • 1 ♀; Nevada Co., Sagehen Creek; [39.432° N, 120.241° W]; 22 Jun. 1972; S.F. Casey leg.; UCDC • 3 ♀♀; Nevada Co., Sagehen Creek near Truckee; [39.432° N, 120.241° W]; 2–8 Jun. 2003; Schulmeister and Keating leg.; AMNH • 1 ♀; Nevada Co., Sagehen Creek, near Hobart Mills; [39.43° N, 120.2° W]; 29 Jun. 1962; M.E. Irwin leg.; UCDC • 1 ♀; Sagehen near Hobart Mills; [39.43° N, 120.2° W]; 25 Jun. 1954; R.H. Goodwin leg.; EMEC • 1 ♀; Mono Co., Sardine Creek; [38.32° N, 119.61° W]; 27 Jun. 1957; John M. Burns leg.; EMEC • 2 ♀♀; Fresno Co., Shaver Lake; [37.1° N, 119.3° W]; 27 Jul. 1968; J.B. Hoy leg.; EMEC • 1 ♀; Sonora Pass; [38.328° N, 119.637° W]; 2933 m a.s.l.; 9 Jul. 1957; R.M. Bohart leg.; UCDC • 1 ♀; Tuolumne Co., Strawberry; [38.2° N, 120.01° W]; 18 Jun. 1951; E.G. Linsley and J.W. MacSwain leg.; BBSL • 1 ♀; same collection data as for preceding; EMEC • 12 ♀♀; Placer Co., Summit; [39.2° N, 120.3° W]; 2134 m a.s.l.; W.M. Giffard leg.; CAS • 1 ♀; Placer Co., Tahoe National Forest, Blackwood Creek, 4 km W of Kaspian Rec. site, Lake Tahoe; [39.1° N, 120.2° W]; 19 Jul. 1983; Thomas W. Davies leg.; CAS • 2 ♀♀; El Dorado Co., Tallac; [38.94° N, 120.05° W]; 1829 m a.s.l.; W.M. Giffard leg.; CAS • 1 ♀; Siskiyou Co., Trinity Alps, Caribou Mt.; [41.03° N, 122.97° W]; 1920–2134 m a.s.l.; 9 Jul. 1969; J. Powell leg.; EMEC • 2 ♀♀; Siskiyou Co., Trout Creek at Forest Service Rd 43N13 (17 air mi. NE of McCloud); [41.43° N, 121.904° W]; 10 Jun. 1974; J. Sorenson leg.; EMEC • 1 ♀; Nevada Co., Truckee; [39.33° N, 120.18° W]; 17 Aug. 1955; Joan Linsley leg.; ex Chrysothamnus; EMEC • 1 ♀; Trinity Co.; [40.5° N, 123° W]; 7 Jun. 1934; R.M. and G.E. Bohart leg.; CAS. – Nevada • 6 ♀♀; Lake Tahoe, Incline Village; [39.25° N, 119.95° W]; 20–25 May 1985; W.W. Middlekauff leg.; CAS • 1 ♀; Mount Rose; [39.34° N, 119.92° W]; 12 Aug. 1936; Bryant leg.; CAS • 1 ♀; Nevada; ANSP. Description Female COLOURATION. Head and mesosoma blue-green to golden-green; clypeus apica

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