Batrisodes abdominalis

Diagnosis
The new species can be separated from other Chinese Batrisodes species by the following combination of characters: all antennomeres longer than wide; antennomeres X and XI each with a small denticle on the ventral side; mesofemur with a long protuberance near base, sternite V with a small spine at middle, and the slender, asymmetrical aedeagus with an elongate dorsal lobe.

Distribution
China

Biology
Ant host: Ectomomyrmex The new species was collected from an ant colony nesting under a stone.