|Slender bodied wasps with elongate mouth-parts. Commonly seen on flowers. They are parasitic on bees or vespid wasps. The metasoma is attached to the propodeum well above the hind coxae [picture] [162 Aust. species]|
Insects of Australia (Chapter 42: Hymenoptera)
CSIRO, Division of Entomology
1137pp (2 volumes), Melbourne University Press, 2nd Edition 1999.