Lasioglossum (Dialictus) reasbeckae Gibbs, 2010

Gardner, Joel & Gibbs, Jason, 2022, New and little-known Canadian LasIOGLOssum (DIaLICTus) (Hymenoptera: Halictidae) and an emended key to species, The Canadian Entomologist (e 3) 154 (1), pp. 1-37 : 23

Lasioglossum (Dialictus) reasbeckae Gibbs, 2010

Figure 12

Diagnosis. Males of L. reasbeckae can be recognised by the combination of mesosoma shiny with large, coarse punctures, basal margins of T2–T3 strongly depressed, clypeus apical half black or brown and becoming brassy in basal half, and metasomal terga with discs sparsely punctate (IS = 1–4 PD) and apical rims entirely impunctate. They are most similar to L. dashwoodi and L. punctatoventre . Males of L. dashwoodi have the metasomal terga metallic blue–green. Males of L. punctatoventre have the metasomal terga densely punctate (IS = 0.5–2 PD) including the apical rims in part. All of these species occur sympatrically in British Columbia, Canada and Washington, United States of America, but only L. punctatoventre and L. reasbeckae are known from Oregon and western California, United States of America, and only L. dashwoodi is known from east of the Cascade and Sierra Nevada ranges, United States of America.

Comments. Gibbs (2010) described and diagnosed the female of L. reasbeckae , but the male was unknown. A series of males at UCRC were associated with some females of L. reasbeckae by morphology and geographical co-occurrence. It is now evident that L. reasbeckae is more common at relatively high elevations and ranges as far south as the San Bernardino Mountains in California, United States of America, whereas the similar and closely related L. punctatoventre is more common at lower elevations.