The workers in question remain within the nest, suspended by their feet, and serve as living honey-pots for the colony, becoming so distended by the supplies of honey poured into their mouths by their foraging comrades that their abdomens become sub-globular, the pale intersegmental membrane being tightly stretched between the widely-separated dark sclerites.
female abdomens, showing short d, Male from side.
The insects included in this order differ from those of the two preceding orders in their more condensed abdomens which bear no cerci, while the number of Malpighian tubes is reduced to four.
hairless mice injected into their abdomens with S. aureus to find the LD50.
The Pelecinidae - included here by Ashmead - are large insects with remarkably elongate abdomens and undivided trochanters.