Neocoelioxys

Coelioxys

Subgenus Neocoelioxys Mitchell, 3 taxa

Key to females of Coelioxys subgenus Neocoelioxys

1. Vertex between lateral ocellus and compound eye completely or almost impunctate, shining; scutellum almost impunctate medially, with a large rounded projection posteriorly; sixth metasomal tergum blunt or truncate; wings blackish-brown; large bee (13-16mm).. Coelioxys dolichos Fox

Vertex moderately to closely punctured; scutellum closely, evenly, and deeply punctured, but with no projection; sixth metasomal tergum usually rounded..2

2. Thoracic and metasomal fasciae dense, conspicuous. Basal metasomal segment ferruginous, remaining segments black.. C. slossoni arenicola Crawford

Thoracic and metasomal fasciae narrow, inconspicuous. Metasomal segments largely ferruginous.. C. slossoni slossoni

Key to males of Coelioxys subgenus Neocoelioxys

1. Metasomal tergum 3-5 with longitudinal, median ridge; vertex with scattered punctures; scutum practically impunctate on disc; scutellum impunctate medially with a large, rounded projection posteriorly; wings blackish-brown; large bee (10-14mm).. Coelioxys dolichos Fox

Metasomal terga 3-5 without longitudinal, median ridge; vertex variably punctured; scutellum evenly, closely, deeply punctured on dorsal surface; carina separating dorsal and posterior surfaces incomplete laterally, only a small median portion raised above level of dorsal surface; thoracic and metasomal fasciae narrow, inconspicuous..2

2. Thoracic and metasomal fasciae dense, conspicuous. Basal metasomal segment ferruginous, remaining segments black.. C. slossoni arenicola Crawford