noun
swift moth; Endoclita excrescens
Refers to moths of the family Hepialidae, especially the species Endoclita excrescens found in Japan. Typically written in katakana in biological contexts.
コウモリガの幼虫は樹木に穴をあける害虫として知られている。
The larvae of the swift moth are known as pests that bore holes in trees.
Compound of 蝙蝠 (こうもり, 'bat') and 蛾 (が, 'moth'), referring to a moth that is active at dusk like a bat. The exact derivation is uncertain.