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1 Ocelli depressed; inner orbits essentially parallel as a rule, usually about as broad above as below
2
1’ Ocelli or ocellar scars not depressed below surrounding surface of face, inner orbits essentially parallel or diverging below 3
2 Clypeus moderately to strongly and evenly convex, midocellar plane usually broader than long, male midfemur with interior edge irregularly carinate to serrate
Stictiella
2’ Clypeus rather low, convexity often irregular and with beveled area near tentorial pits; male midfemur entire; midocellar plane not broader than long
Glenostictia
3 Palpal formula 5-3, 4-2, or 3-1, less than 6-4 4
3’ Palpal formula 6-4 5
4 Marginal cell in distal half slightly bent away from wing margin, tergum VII of male without a spiracular lobe Microbembex
4’ Marginal cell in distal half adhering to wing margin, tergum VII of male with a spiracular lobe
Bembix
5 Lateral angles of propodeum projecting backward, tergum VII of male without spiracular lobe Bicyrtes
5’ Lateral angles of propodeum not projecting backward, tergum VII of male with a spiracular lobe Stictia
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