Lasioglossum (Dialictus) helianthi

Lasioglossum (Dialictus) helianthi (Cockerell, 1916) Figs 30–32, 76G, 106B, 107B, 109B, 110A, 115A Halictus helianthi Cockerell, 1916: 77 (holotype, ♀, deposited in USNM, examined). Lasioglossum (Dialictus) imbrex Gibbs, 2010: 153 (holotype, ♀, deposited in PCYU, examined). Halictus (Chloralictus) helianthi – Michener 1936: 283 (male description). Lasioglossum (Chloralictus) tegulariforme – Michener 1951: 1118 (in part, synonymy by Timberlake, catalogue). Dialictus tegulariformis – Hurd 1979: 1929 (in part, catalogue). — Moure & Hurd 1987: 133 (in part, catalogue). Lasioglossum (Dialictus) helianthi – Gardner & Gibbs 2022: 6 (resurrection from synonymy, synonymy with L. imbrex). Diagnosis Females of L. helianthi have the tegula relatively small (maximum length about half or less ITS and reaching but not exceeding posterior margin of mesoscutum in dorsal view), with inner posterior margin weakly concave and a posterior point usually narrower than 0.5 OD, and usually densely punctate (IS ≤ 1 PD); mesoscutum finely, densely punctate (IS ≤ 1 PD in posterior half and 4–5 punctures between posterior end of parapsidal line and lateral edge of mesoscutum) and entirely tessellate; metapostnotum with coarse anastomosing rugae reaching posterior margin; T1–T2 discs moderately densely and uniformly punctate (IS = 1–2 PD); T1 anterior slope usually coriarious; T3 usually with sparse tomentum throughout disc, paraocular area punctures larger and sparser than frons punctures; and gena narrower than eye in lateral view. Females of L. helianthi are most similar to those of L. angelicum sp. nov., L. ellisiae, L. gaudiale, and L. tegulariforme, all of which (except L. tegulariforme) have T3 with tomentum limited to basolateral patches and, rarely, a sparse, medially interrupted subapical band. In addition, females of L. angelicum have the mesoscutum usually more coarsely or sparsely punctate (IS = 1–2 PD in posterior half and/or 2–3 punctures between posterior end of parapsidal line and lateral edge of mesoscutum), sometimes shiny, and tegula larger (maximum length more than half ITS and exceeding posterior margin of mesoscutum in dorsal view), with inner posterior margin strongly concave and a rounded posterior projection close to 1 lateral OD in size, and more densely punctate (IS <1 PD). Females of L. ellisiae have the mesoscutum sometimes shiny posteriorly and slightly more sparsely punctate (most IS = 1 PD). Females of L. gaudiale have the mesoscutum more coarsely punctate (as in L. angelicum), T1 anterior slope shiny, and gena about as wide as eye in lateral view. Females of L. tegulariforme have the tegula larger and more densely punctate (as in L. angelicum), paraocular area punctures as large and dense as frons punctures, and T1 with an impunctate median line about 1 OD wide. Males of L. helianthi have the tegula relatively small (as in the female); mesoscutum entirely densely punctate (IS <1 PD); metapostnotum usually shiny with strong anastomosing rugae; and discs of T1–T2 deeply and moderately densely punctate (IS = 1–2 PD) with some punctures extending onto apical rims. Males of L. helianthi are most similar to those of L. angelicum sp. nov., L. diabolicum sp. nov., L. ellisiae, and L. tegulariforme. Males of L. angelicum have the tegula larger (exceeding posterior margin of mesoscutum in dorsal view), with inner posterior margin strongly concave with a rounded posterior projection close to 1 lateral OD in size, and more densely punctate (IS <1 PD); and mesoscutum usually more sparsely punctate (IS = 1–2 PD). Males of L. diabolicum have the discs of T1–T2 finely and moderately sparsely punctate (IS = 1–2 PD) and the mesoscutum usually more sparsely punctate (IS = 1–2 PD). Males of L. ellisiae have the T1–T2 apical rims impunctate and metapostnotum usually with subparallel rugae. Males of L. tegulariforme have the tegula larger (as in L. angelicum) and discs of T1–T2 (especially T1 medially) more sparsely punctate (IS = 1–3 PD). Etymology Cockerell (1916) named this species after the sunflowers it was collected on, Helianthus lenticularis Douglas ex Lindl. (= Helianthus annuus L.). Material examined Holotype UNITED STATES – California • ♀; Orange; [33.79° N, 117.85° W]; 16 Aug. 1915; Cockerell leg.; ex Helianthus lenticulatus; USNM. Other material CANADA – British Columbia • 1 ♀; Haynes Lease Ecological Reserve; 49.0874° N, 119.5178° W; 11 May 2010; S. Elwell leg.; WRME SFU729331 • 3 ♀♀; ibid.; 24 May 2010; S. Elwell leg.; WRME SFU729043, SFU729092, SFU729224 • 2 ♀♀; ibid.; 8 Jun. 2010; S. Elwell leg.; WRME SFU731264, SFU731988 • 1 ♀; ibid.; 23 Jun. 2010; S. Elwell leg.; WRME SFU733517 • 1 ♀; Kennedy Bench Cons. Area; 49.2621° N, 119.5093° W; 10 May 2010; S. Elwell leg.; WRME SFU731005 • 1 ♀; ibid.; 8 Jul. 2010; S. Elwell leg.; WRME SFU734663 • 6 ♀♀; ibid.; 21 Jul. 2010; S. Elwell leg.; WRME SFU728265, SFU728292, SFU728307, SFU728317, SFU728334, SFU728337 • 1 ♀; Okanagan-Similkameen Reg. Dist., Osoyoos, Mount Kruger, Strawberry Creek Road; 49.0294° N, 119.4948° W; elev. 420 m; 14 Jun. 2008; Lincoln R. Best leg.; PCYU LRB-4507 • 1 ♀; Okanagan-Similkameen Reg. Dist., Osoyoos, Mount Kruger, Strawberry Creek Road; 49.0304° N, 119.4928° W; elev. 420 m; 24 Jul. 2008; Lincoln R. Best leg.; WRME 518950 • 1 ♀; Okanagan-Similkameen Reg. Dist., Osoyoos, Mount Kruger, Strawberry Creek Road; 49.0359° N, 119.5007° W; elev. 390 m; 1–2 May 2009; Lincoln R. Best leg.; PCYU LRB09-2646 • 1 ♀; Okanagan-Similkameen Reg. Dist., Osoyoos, Mount Kruger, Strawberry Creek Road; 49.0382° N, 119.5095° W; elev. 505 m; 15 Jun. 2008; Lincoln R. Best leg.; PCYU LRB-4712 • 1 ♀; Okanagan-Similkameen Reg. Dist., Osoyoos, Mount Kruger, Strawberry Creek Road; 49.0421° N, 119.5114° W; elev. 505 m; 16 Jul. 2008; Lincoln R. Best leg.; PCYU LRB-2325 • 2 ♀♀; Okanagan-Similkameen Reg. Dist., Osoyoos, Road 22, Okanagan River; 49.0895° N, 119.5358° W; elev. 280 m; 22 Apr. 2009; Lincoln R. Best leg.; PCYU • 1 ♀; Okanagan-Similkameen Reg. Dist., Osoyoos, Strawberry Creek Road; 49.0285° N, 119.4931° W; elev. 440 m; 1–3 May 2009; Lincoln R. Best leg.; PCYU • 1 ♀; Okanagan-Similkameen Reg. Dist., Summerland, Garnet Lake; 49.6879° N, 119.7761° W; elev. 650 m; 18 Jul. 2008; Lincoln R. Best leg.; PCYU • 1 ♂; Oliver, Atsiklak Creek; [49.183° N, 119.519° W]; 30 Jun. 1996; Gord E. Hutchings leg.; GEH • 1 ♀; Osoyoos, Inkameep L. R.; [49.04° N, 119.44° W]; 30 Jun. 1996; Gord E. Hutchings leg.; GEH • 1 ♀; Osoyoos, Mount Kobau; [49.11° N, 119.66° W]; elev. 560 m; 30 May–2 Jun. 1991; D. Blades, C. Maier leg.; RBCM ENT992-694 • 1 ♀; Penticton, West Bench pond, 5 km E of Mac’s Lake; [49.5° N, 119.6° W]; 28 Apr. 1988; C.S. Guppy leg.; RBCM ENT991-3465. UNITED STATES – California • 1 ♀; Alameda Co., Berkeley, 2601 Milvia Street; [37.8616° N, 122.2694° W]; 13 Jul. 1996; John S. Ascher leg.; AMNH • 1 ♀; Contra Costa Co., Bethel Island, Piper Slough; [38.04° N, 121.64° W]; 1 Sep. 2006; John S. Ascher leg.; AMNH • 4 ♂♂; Contra Costa Co., Urban Martinez; [38.02° N, 122.13° W]; 22 Aug. 2005; G.W. Frankie, M. Urbina, V. Wojcik, N.N. Lanni leg.; BBSL647249, BBSL647251, BBSL647252, BBSL647256 • 1 ♂; ibid.; 21 Sep. 2005; G.W. Frankie, M. Urbina, V. Wojcik, N.N. Lanni leg.; BBSL647112 • 1 ♀; El Dorado Co., Crocker Creek area; 38.7406° N, 121.0232° W; elev. 315 m; 17 Aug. 2018; D. Burge leg.; ex Helianthus californicus; SOUM • 1 ♀; El Dorado Co., Pine Hill; 38.7199° N, 120.9891° W; elev. 605 m; 6 Aug. 2017; D. Burge leg.; ex Centaurea solstitialis; SOUM • 1 ♀; ibid.; 4 Sep. 2017; D. Burge leg.; ex Ericameria arborescens; SOUM • 2 ♀♀; El Dorado Co., Salmon Falls area; 38.7601° N, 121.032° W; elev. 340 m; 17 Aug. 2018; D. Burge leg.; ex Perideridia kelloggii; SOUM • 3 ♀♀; Fresno Co., North of Jacolitos Creek; 36.054° N, 120.4758° W; 22 Apr. 1996; R.T. Griswold, S. Griswold, L. Griswold leg.; BBSL FaunalSurvey No. 000158779, FaunalSurvey No. 000158780, FaunalSurvey No. 000158782 • 1 ♀; Humboldt Co., Garberville; [40.1° N, 123.79° W]; 19 Apr. 1935; ex Cercocorpus betulifolius; UCMC • 1 ♀; Inyo Co., Surprise Canyon; [36.11° N, 117.15° W]; 5 May 1972; William P. MacKay leg.; NMSU • 1 ♀; Inyo Co., Surprise Canyon, Panamint Mountains; [36.11° N, 117.15° W]; 24Apr. 1957; P.D. Hurd leg.; ex Eriogonum inflatum; EMEC • 1 ♀; Kern Co., Sand Canyon 3 miles west of Brown; [35.78° N, 117.9° W]; 7 Apr. 1966; R. M. Bohart leg.; UCDC • 3 ♀♀; Kern Co., Short Canyon; 35.7093° N, 117.9112° W; elev. 1200 m; 21–29 May 2008; M.E. Irwin leg.; BBSL FDP151834, FDP151839, FDP151877 • 1 ♀; Kern Co.; 35.5971° N, 118.5056° W; 1 Jun. 2018; A. Anderson, A. James leg.; CUIC • 3 ♀♀; Lake Co., Siegler Canyon Creek, 0.5 miles west Lower Lake; 38.9073° N, 122.6235° W; 29–31 Aug. 2017; Paul A. Rude leg.; EMEC • 1 ♀; Los Angeles Co., Charmlee Wilderness; 34.0613° N, 118.8781° W; elev. 410 m; 12 Apr. 2018; S.B. Lerman leg.; ASUHIC LA-REF-CW-BB-1 848 • 15 ♀♀, 1 ♂; Los Angeles Co., Chatsworth; 34.26° N, 118.601° W; 1–8 Jul. 2017; LACM • 3 ♀♀, 3 ♂♂; Los Angeles Co., Claremont; 34.0894° N, 117.7111° W; 1–8 Jul. 2016; LACM • 4 ♀♀, 2 ♂♂; ibid.; 1–8 Aug. 2016; LACM • 1 ♀; Los Angeles Co., Eagle Rock; 34.13° N, 118.23° W; elev. 169.9 m; 15–21 Jul. 2018; Hannah Hayes leg.; LACM ENT 380964 • 4 ♀♀; Los Angeles Co., Eagle Rock; 34.13° N, 118.23° W; 15–21 Jul. 2018; Hannah Hayes leg.; LACM • 1 ♂; Los Angeles Co., Elysian Park; 34.078° N, 118.234° W; 31 May–7 Jun. 2014; Eric Harding, Victoria Harding leg.; LACM ENT 394544 • 1 ♀; Los Angeles Co., Elysian Park; 34.08° N, 118.23° W; elev. 147.9 m; 18–20 Jul. 2018; Hannah Hayes leg.; LACM ENT 376841 • 1 ♀; Los Angeles Co., Elysian Park; 34.08° N, 118.23° W; 18–20 Jul. 2018; Hannah Hayes leg.; LACM • 1 ♀; Los Angeles Co., Glendale; 34.15° N, 118.22° W; 19–21 Jul. 2018; Hannah Hayes leg.; LACM • 1 ♀; Los Angeles Co., Highland Park; 34.13° N, 118.19° W; 20–22 Jul. 2018; Hannah Hayes leg.; LACM • 4 ♀♀, 5 ♂♂; Los Angeles Co., Hollywood sign; [34.13° N, 118.32° W]; LACM • 1 ♂; Los Angeles Co., Larchmont; 34.

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