Host-parasite relationships in six species of Sphecodes bees and their halictid hosts: nest intrusion, intranidal behavior, and Dufour's gland volatiles (Hymenoptera: Halictidae)
Sick, M., Ayasse, M., Tengö, J., Engels, W., Lübke, G., Francke, & W (1994). Host-parasite relationships in six species of Sphecodes bees and their halictid hosts: nest intrusion, intranidal behavior, and Dufour's gland volatiles (Hymenoptera: Halictidae). Journal of Insect Behavior, 7, 101-117.