noun
gall wasp
Any insect of the family Cynipidae; a rare term in everyday Japanese, mostly encountered in biological contexts.
没食子蜂は植物に虫こぶを作ることで知られている。
Gall wasps are known for creating galls on plants.
Compound of 没食子 (gallnut) or 五倍子 (gallnut) and 蜂 (wasp, bee). The exact historical derivation is uncertain; the spelling is conventionally associated with the insect's gall-forming behavior.