虫ちゅうえい

noun

gall; plant gall

Refers to abnormal plant growths caused by insects, such as those on leaves or stems. A technical term used in botany and entomology.

• この葉はにできた虫ちゅうえいは、タマバエの幼よう虫ちゅうが原げん因いんです。

  The gall on this leaf is caused by gall midge larvae.