Basibuyuk, H. H., D. L. J. Quicke, A. P. Rasnitsyn, and M. G. Fitton. 2000c. Morphology and sensilla of the orbicula, a sclerite between the tarsal claws, in the Hymenoptera. Annals of the Entomological Society of America 93 (3): 625-636.
catalog of information about evanioid wasps
Basibuyuk, H. H., D. L. J. Quicke, A. P. Rasnitsyn, and M. G. Fitton. 2000c. Morphology and sensilla of the orbicula, a sclerite between the tarsal claws, in the Hymenoptera. Annals of the Entomological Society of America 93 (3): 625-636.