Lasioglossum (Dialictus) sheffieldi Gibbs

• Main Author: Gibbs, Jason
• Format: Text
• Language: unknown
• Published: Zenodo 2011
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Insecta; Hymenoptera; Halictidae; Lasioglossum; Lasioglossum sheffieldi; Canada; Sheffield; Newfoundland
• Online Access: https://dx.doi.org/10.5281/zenodo.5699454; https://zenodo.org/record/5699454

Lasioglossum ( Dialictus ) sheffieldi Gibbs Lasioglossum ( Dialictus ) sheffieldi Gibbs, 2010 b: 302. Ƥ 3. Holotype. Ƥ CANADA, Nova Scotia, Kings Co., Avonport, N 45.1198 W064.2730, 18.vii. 2002 (C. Sheffield); [PCYU]. Diagnosis. Female L . sheffieldi can be recognised by the following diagnostic combination: head moderately long (length/width ratio = 1.00– 1.01); mesoscutum tessellate, punctures dense except medially (Fig. 13 B); mesepisternum shining, irregularly punctate; metapostnotum with strongly anastomosing rugae; T 1 acarinarial fan complete dorsally; metasomal terga polished with faint metallic reflections; and T 3 –T 4 with moderately dense tomentum. They are similar to L . perpunctatum , which has a wider head (length/width ratio = 0.95–0.96) and dense mesoscutal punctures medially (Fig. 13 A). Male L . sheffieldi can be recognised by the following diagnostic combination: head long (length/width ratio = 1.06– 1.08), dense facial tomentum limited to lower paraocular area, flagellomeres relatively short (length/width ratio = 1.20– 1.62), mesoscutal punctures sparse between parapsidal lines (i= 1–3 d), mesepisternum with distinct punctures, tegula with weak posterior angle, and apical impressed areas of metasomal terga pale translucent yellow, distinctly punctate. They are similar to L . perpunctatum , which has a wider head (length/width ratio = 1.00– 1.03). Range. Coastal dunes of Nova Scotia, southern Newfoundland, west to Quebec. Disjunct individuals from western coast of Lake Michigan and Manitoba dunes. USA : WI. CANADA : MB, NB, NF, NS, PQ. DNA Barcode. Available. Multiple sequences. Comments. Locally common. Lasioglossum sheffieldi is a sand dune specialist. : Published as part of Gibbs, Jason, 2011, Revision of the metallic Lasioglossum (Dialictus) of eastern North America (Hymenoptera: Halictidae: Halictini), pp. 1-216 in Zootaxa 3073 on pages 176-177, DOI: 10.5281/zenodo.1049595 : {"references": ["Gibbs, J. (2010 b) Revision of the metallic species of Lasioglossum (Dialictus) in Canada (Hymenoptera, Halictidae, Halictini). Zootaxa, 2591, 1 - 382."]}