Key to the Family-Group of the Japanese Bees, Based on Adult Females

Modified key of Michener (2000)

4

History 1 => 2 => 3 => 4
4-1(2) 4-2(1)
Focial fovea rather small and shallow but well defined, hairless and shining Large image Facial fovea absent or vaguely defined Large image
Two subantennal sutures well separated on clypeal margin below each antenna Large image One subantennal suture below each antenna or if two, then the two nearly meeting on clypeal margin; one subantennal suture below each antenna Large image
[Apex of marginal cell truncate or sometimes obliquely cut off and thus pointed, but apex well separated from wing margin] Large image