Abstract
Antepipona biguttata, an Asian potter wasp, is distributed in China, India, Korea, Laos, Malaysia, Myanmar, Taiwan, Thailand and Vietnam. Despite a large geographical distribution, not much is known about its biology. Here, I describe the sleeping gregarious behavior of A. biguttata (Fabricius) for the first time. Seventeen individuals of the wasp, including 11 males and 6 females, were found gregariously sleeping on a bunch of panicles of the jungle rice Echinochloa colona. The wasps grasped the plants tightly with their mandibles, their fore and mid legs grasping at panicles, their hind legs either resting on the substrate or free backwards, and their head mostly orientating upwards. The wasps held their body parallel to the perch, with their antennae raised forwards and their wings usually extended at an angle of about 45 degrees. Brief comments on the sleeping behavior of A. biguttata are presented.
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