Andrena (Micrandrena) Ashmead, 1899

Dardón, María José, Torres, Félix & Ornosa, Concepción, 2014, The subgenus Andrena (Micrandrena) (Hymenoptera: Andrenidae) in the Iberian Peninsula, Zootaxa 3872 (5), pp. 467-497 : 473

Andrena (Micrandrena) Ashmead, 1899

Andrena (Micrandrena) Ashmead 1899:89

TYPE SPECIES: Micrandrena pacifica Ashmead, 1899 = Andrena melanochroa Cockerell, 1898 , by original designation. Andrena (Andrenella) Hedicke 1933:210

TYPE SPECIES: Melitta minutula Kirby, 1802 , by original designation.

Diagnosis. The Andrena (Micrandrena) are small bees (4.5–10 mm) with black or dark brown integument. The propodeal corbicula is incomplete, and the basal area of propodeum has a rugulose surface that sometimes appears to be finely granular. The metasomal terga have distinct PPs between the microsculptures (in some species are shiny with a stronger PP). Additionally, the process of labrum is complete, although it is clearly bilobate in the female of one species, and weakly bilobate in the males of several species; however, an incomplete propodeal corbicula identifies them.