Antlions (usubakagerou) are so called because their young prey on ants, which they catch by constructing pitfall traps in sandy soil, lying in wait at the bottom with their mandibles open. The adults feed on pollen and nectar. This one flew into my office (in Tagawa) and perched up on the ceiling.

Myrmeleon formicariusMyrmeleon formicarius

Neuroptera: Myrmeleontidae
Myrmeleon formicarius (?) = ko-usubakagerou