Children (17 direct children, 853 direct and indirect children):
Osmia
(tree size 407)
Mason bees
Chelostoma
(tree size 54)
Ashmeadiella
(tree size 69)
Haetosmia
(tree size 3)
Heriades
(tree size 146)
Hofferia
(tree size 2)
Ochreriades
(tree size 2)
Protosmia
(tree size 32)
Subgenus chelostomopsis
Stenoheriades
(tree size 12)
Wainia
(tree size 10)
Pseudoheriades
(tree size 8)
Othinosmia
(tree size 12)
Hoplosmia
(tree size 19)
Afroheriades
(tree size 7)
Stenosmia
(tree size 10)
Noteriades
(tree size 12)
Atoposmia
(tree size 31)