Lasioglossum (Dialictus) mesillense

Lasioglossum (Dialictus) mesillense (Cockerell, 1898) Figs 55–57, 90G, 101B, 108B Halictus nymphalis race mesillensis Cockerell, 1898b: 47 (lectotype designated herein, ♀, deposited in EMEC, examined). Halictus clarissimus Ellis, 1914b: 222 (holotype, ♀, deposited in USNM, examined) syn. nov. Halictus (Chloralictus) perexiguus Sandhouse, 1924: 26 (holotype, ♂, deposited in USNM, examined) syn. nov. Halictus mesillensis – Cockerell 1906: 429 (key). Halictus (Chloralictus) clarissimus – Sandhouse 1924: 4 (key). Halictus (Chloralictus) mesillensis – Sandhouse 1924: 4 (key). Lasioglossum (Chloralictus) clarissimum – Michener 1951: 1112 (catalog). Lasioglossum (Chloralictus) mesillense – Michener 1951: 1115 (catalog). Lasioglossum (Chloralictus) perexiguum – Michener 1951: 1116 (catalog). Dialictus clarissimus – Hurd 1979: 1965 (catalog). — Moure & Hurd 1987: 95 (catalog). Dialictus mesillensis – Hurd 1979: 1968 (catalog). — Moure & Hurd 1987: 112 (catalog). Dialictus perexiguus – Hurd 1979: 1969 (catalog). — Moure & Hurd 1987: 120 (catalog). Diagnosis Females of Lasioglossum mesillense can be recognized by the face short (length/width ratio ~0.8), frons with very fine and dense but distinctly separated punctures, clypeus with distinct apicolateral denticles, mesepisternum with dense punctures (i ≤ 1 pd) becoming crowded and weakly rugulose on the dorsal margin, T2–4 with dark spiracular spots, T1 anterior surface usually shiny, metasomal terga usually with some dense basolateral tomentum, and mesoscutum long (length/width ratio usually ±0.84). They are most similar to L. minckleyi sp. nov., L. austerum sp. nov., and L. imbriumbrae sp. nov. Females of L. minckleyi sp. nov. have the frons with crowded and indistinct punctures, mesepisternum more densely punctate ventrally (i <1 pd), T1 anterior surface coriarious, metasomal terga without tomentum, and mesoscutum broad (length/width ratio usually ≤ 0.8). Females of L. austerum sp. nov. have the head and mesosoma with more extensive dull microsculpture, mesepisternum more sparsely and distinctly punctate dorsally (i ≤ 1 pd), T1 anterior surface coriarious, and metasomal terga without tomentum. Females of L. imbriumbrae sp. nov. have the frons with crowded indistinct punctures (nearly rugulose) medially, and mesepisternum and hypoepimeron usually with dense but distinctly separated punctures throughout (i <1 pd). Males of L. mesillense can be recognized by the flagellomeres relatively long (F2 about 2 times as long as F1 and 1.6 times as long as broad), face short (length/width ratio ~0.84) and covered in dense tomentum below the ocelli, mesepisternum shiny and moderately densely punctate (i =1–2 pd), metapostnotum with relatively weak rugae not reaching the posterior margin or extending onto the dorsolateral slope, T2–3 often with basolateral tomentum, and clypeus apical margin and labrum orange to yellow. They are most similar to L. minckleyi sp. nov., L. austerum sp. nov., and L. clematisellum. Males of L. minckleyi sp. nov. have the flagellomeres relatively short (F2 about 1.6 times as long as F1 and 1.25 times as long as broad), frons with crowded and indistinct punctures, and T2–3 never with basolateral tomentum. Males of L. austerum sp. nov. have the flagellomeres relatively short (F2 about 1.75 times as long as F1 and 1.4 times as long as broad) and face with sparse tomentum. Males of L. clematisellum have the clypeus apical margin, labrum, and metasoma black, metapostnotum with strong rugae reaching the posterior margin and extending onto the dorsolateral slope, and T2–3 never with basolateral tomentum. Etymology Cockerell (1898b) named this species after the Mesilla Valley in New Mexico, where the type series was collected, plus the Latin adjectival suffix ‘- ensis ’, indicating association with a place. Material examined Lectotype UNITED STATES – New Mexico • ♀; Las Cruces; [32.32° N, 106.76° W]; 5 Aug. 1893; Cockerell leg.; EMEC 530953. [Verbatim label: Las Cruces, NM / Aug. 5 1893 (Cockerell) // stultus? // Halictus mesillensis Cockerell // Stanford University // Halictus mesillensis Ckll / Ckll // UC Berkeley / EMEC 530,953] Other material MEXICO – Baja California • 1 ♂; 12 mi. S of Palacio; [30° N, 115° W]; Apr. 1939; C.D. Michener leg.; ex Prosopis; CAS. – Chihuahua • 1 ♀; Hidalgo del Parral; [26.93° N, 105.67° W]; 31 Jul. 1967; R.C. Gardner, C.R. Kovacic and K. Lorenzen leg.; UCDC. – Sonora • 2 ♀♀; 30 km E of Agua Prieta; 31.3294° N, 109.2547° W; 24 Jul. 2001; R.L. Minckley leg.; RLM • 1 ♀; same location as for preceding; 18 Jul. 2001; R.L. Minckley leg.; RLM • 1 ♀; 30 km E of Agua Prieta; 31.3097° N, 109.2778° W; 6 Aug. 2004; R.L. Minckley leg.; ex Chenopodium neomexicanum; RLM • 1 ♀; same location as for preceding; 8 Aug. 2004; R.L. Minckley leg.; ex Salsola iberica; RLM • 1 ♀; 30 km E of Agua Prieta; 31.3297° N, 109.2558° W; 3 Apr. 2002; A. Romero leg.; RLM • 1 ♀, 2 ♂♂; Cócorit; [27.58° N, 109.96° W]; 11 Jun. 1961; F.D. Parker leg.; UCDC • 1 ♀; Municipio de Agua Prieta, Rancho Nogalitos; 31.31177° N, 108.98622° W; 25 May 2008; RLM • 2 ♀♀; Rancho San Bernardino; 31.3294° N, 109.2547° W; 5 Sep. 2001; R.L. Minckley leg.; RLM • 1 ♀; Rancho San Bernardino; 31.3186° N, 109.2508° W; 5 Sep. 2001; R.L. Minckley leg.; RLM • 1 ♀; Rancho San Bernardino; 31.3303° N, 109.26° W; 8 Sep. 2001; R.L. Minckley leg.; RLM • 1 ♀; Rancho San Bernardino, 28 km E of Agua Prieta, cienega transect; [31.32° N, 109.26° W]; 27 Jul. 2000; K. Toal leg.; RLM • 2 ♀♀; Rancho San Bernardino, Bosque wet, Site 1; 31.33194° N, 109.27083° W; 10 Aug. 2006; RLM • 1 ♀; Rancho San Bernardino, Bosque wet, Site 6, Transect 3; 31.32957° N, 109.25462° W; 18 Sep. 2001; RLM • 1 ♀; Rancho San Bernardino, Bosque wet, Site 7, Transect 2; 31.31007° N, 109.25348° W; 16 Aug. 2005; RLM • 1 ♀; Rancho San Bernardino, Cafe Transect 5, Elia Thesis Study; [31.32° N, 109.26° W]; 3Aug. 2001; RLM • 1 ♀; Rancho San Bernardino, Grassland, Site 3; 31.30222° N, 109.26694° W; 12 Aug. 2006; RLM • 1 ♀; Rancho San Bernardino, Loma Transect 2, Elia Thesis Study; [31.32° N, 109.26° W]; 2 Aug. 2001; RLM • 1 ♀; Rancho San Bernardino, Loma Transect 3, Elia Thesis Study; [31.32° N, 109.26° W]; 2Aug. 2001; RLM • 2 ♀♀; Rancho San Bernardino, Los Ojitos, Lebuhn, Bee Diversity; 31.30025° N, 109.2625° W; 3 May 2002; RLM • 1 ♀; Rancho San Bernardino, Pollination Site 12, Lesquerella, Silver Creek, upstream of Big Dam; 31.3259° N, 109.28802° W; 13 Apr. 2006; ex Physaria gordonii; RLM • 1 ♀; Rancho San Bernardino, Pollination Site 22, Sphaeralcea, field 3; 31.32222° N, 109.27778° W; 6 Aug. 2006; ex Laennecia coulteri; RLM • 1 ♀; Rancho San Bernardino, Pollination Site 24, Lesquerella, Hay Hollow; 31.31333° N, 109.25028° W; 5 Apr. 2007; ex Salix gooddingii; RLM • 1 ♀; Rancho San Bernardino, Pollination Site 27, Horse Corral, 70 m N of main ranch house; 31.32556° N, 109.26667° W; 9 Sep. 2007; ex Antennaria sp.?; RLM • 2 ♀♀; same location as for preceding; 9 Sep. 2007; ex Gaura mollis; RLM • 3 ♀♀; Rancho San Bernardino, quarry, at road crossing; 31.32042° N, 109.2681° W; 2 Sep. 2003; RLM • 1 ♀; Rancho San Bernardino, quarry, general area; 31.3195° N, 109.27028° W; 18 Aug. 2003; ex Mentzelia pumila; RLM • 1 ♀; same location as for preceding; 27 May 2004; ex Mentzelia pumila; RLM • 1 ♀; Rancho San Bernardino, quarry, gravel pit; 31.31964° N, 109.26926° W; 18 Aug. 2003; RLM • 1 ♀; Rancho San Bernardino, quarry, W roadside; 31.31948° N, 109.2701° W; 18 Aug. 2003; RLM • 2 ♀♀; same location as for preceding; 19 Aug. 2003; RLM • 2 ♀♀; Rancho San Bernardino, Riparian 3; 31.31389° N, 109.25028° W; 25 Aug. 2003; RLM • 1 ♀; Rancho San Bernardino, Riparian, Site 2; 31.33194° N, 109.25833° W; 20 Aug. 2003; ex Baccharis sarothroides; RLM • 2 ♀♀; Rancho San Bernardino, Riparian, Site 2, Transect 1; 31.33168° N, 109.25817° W; 20 May 2004; RLM • 1 ♀; Rancho San Bernardino, Riparian, Site 4, Transect 1; 31.32965° N, 109.25587° W; 8 May 2002; RLM • 1 ♀; same location as for preceding; 30 Apr. 2004; RLM. UNITED STATES – Arizona • 1 ♀; Cochise Co., 3 mi. W of Portal; [31.91° N, 109.19° W]; 24 Aug. 1973; R. Coville leg.; EMEC • 1 ♀; Cochise Co., 4 mi. E. Willcox; [32.25° N, 109.76° W]; 17 Aug. 1994; J.G. Rozen and J.S. Ascher leg.; AMNH • 1 ♀; Cochise Co., 4 mi. ESE of Willcox; [32.23° N, 109.77° W]; 29 Aug. 2005; J.S. Ascher leg.; AMNH • 1 ♀; Cochise Co., 5.25 km ESE of Willcox; 32.2366° N, 109.7782° W; 11 Apr. 2019; J. Gardner leg.; ex yellow mustard; WRME • 1 ♀; Cochise Co., 6 mi. S of Willcox; [32.16° N, 109.83° W]; 23 Aug. 1986; R.J. McGinley and B.M. Norden leg.; USNM • 1 ♀; Cochise Co., 9 mi. SE of Willcox; [32.16° N, 109.73° W]; 10 Jul. 1975; E.G. and J.M. Linsley leg.; EMEC • 1 ♀; Cochise Co., Chiricahua Mts, Cave Crk. Canyon; [31.89° N, 109.17° W]; 1524 m a.s.l.; 4 Aug. 1986; D.R. Corr leg.; MTEC • 1 ♀; Cochise Co., Chiricahua Mts, Portal to Ranger Stn; [31.91° N, 109.15° W]; 4 Aug. 1986; D.R. Corr leg.; MTEC • 1 ♀; Cochise Co., Coronado NF, Barfoot Meadow; 31.9176° N, 109.2793° W; 2536 m a.s.l.; 1 Jul. 2017; M.P. Argueta leg.; ex Erigeron divergens; UCRC • 1 ♂; Cochise Co., Douglas; [31.34° N, 109.51° W]; 27 Jul. 1975; E.G. and J.M. Linsley leg.; ex Tamarix chinensis; CUIC • 1 ♀; Cochise Co., 12.5 mi. N of Portal; 32.0649° N, 109.1804° W; 1 Sep. 2009; T.L. Griswold leg.; BBSL • 1 ♀; Cochise Co., Southwestern Research Station 5 mi. W of Portal; [31.884° N, 109.206° W]; 1646 m a.s.l.; 4 Jul. 1963; A.R. Moldenke and J.A. Woods leg.; AMNH • 1 ♀; same location as for preceding; 7 Oct. 1962; Vincent Roth leg.; AMNH • 1 ♀; same location as for preceding; 18 Apr. 1963; Vincent Roth leg.; AMNH • 1 ♀; Cochise Co., San Bernardino NWR; 31.335° N, 109.2528° W; 18 Jul. 2001; R. Minckley leg.; PCYU • 1 ♀; Cochise Co., San Bernardino NWR; 31.3353° N, 109.2514° W; 30 Mar. 2002; R.L. Minckley leg.; PCYU • 1 ♀; Cochise Co., San Bernardino NWR; 31.3381° N, 109.2606° W; 8 Sep. 2001; R.L. Minckley leg.; PCYU • 2 ♀♀; same location as for preceding; 8 Sep. 2001; R.L. Minc

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