成せい虫ちゅう

noun

adult insect; imago

Entomological term for the final, fully developed stage of an insect after metamorphosis. Contrasts with 幼虫 (larva) and 蛹 (pupa).

• 幼よう虫ちゅうがさなぎになり、やがて成せい虫ちゅうになった。

  The larva became a pupa and eventually turned into an adult insect.

• 成せい虫ちゅうの寿じゅ命みょうは種しゅ類るいによって大おおきく異ことなる。

  The lifespan of an adult insect varies greatly depending on the species.