Ctenoplectrella

ENGEL, MICHAEL S., 2001, A Monograph Of The Baltic Amber Bees And Evolution Of The Apoidea (Hymenoptera), Bulletin of the American Museum of Natural History 2001 (259), pp. 1-1 : 1-

Key to Species of CTENOPLECTRELLA

1. Crossvein 2rs­m strongly and doubly arcuate, thus second submarginal cell more strongly produced toward wing apex along its posterior margin (fig. 43); medioapical margin of clypeus straight................. 2

– Crossvein 2rs­m relatively straight and therefore second submarginal cell not more strongly produced toward wing apex along its posterior margin (fig. 41); medioapical margin of clypeus gently convex (fig. 40).............. C. viridiceps Cockerell

2. Mesoscutum and scutellum punctate...................... C. cockerelli , n. sp.

– Mesoscutum and scutellum impunctate..................... C. grimaldii , n. sp.