CORYNURINA, ENGEL, 2000

ENGEL, MICHAEL S., 2000, Classification Of The Bee Tribe Augochlorini (Hymenoptera: Halictidae), Bulletin of the American Museum of Natural History 2000 (250), pp. 1-89 : 51-52

CORYNURINA , NEW SUBTRIBE

TYPE GENUS: Corynura Spinola, 1851 present designation.

DIAGNOSIS: This is the most primitive group of Augochlorini and is restricted to southern South America. The species are generally small, although females of at least one species, R. inflaticeps , can be moderately large. Most species are dull metallic (except Callistochlora ) or nonmetallic in coloration. The presence of a strong galeal comb, the short galea that extends posteriorly only halfway to the stipital base, and the short median process on the premental apex all serve to separate this group from the larger and more diverse Augochlorina .

DESCRIPTION: Female. Epistomal sulcus forming an obtuse or nearly linear angle. Premental apex with median process as long as or shorter than lateral processes. Strong galeal comb present (figs. 24, 25); galeal apex rounded (fig. 24); galeal base extending only halfway to stipital base (fig. 21). Marginal cell apex acute. Integument frequently dull metallic. Male. Distal process of labrum frequently absent (except in Rhinocorynura ). Apical margins of S4–S5 unmodified.