成せい幼よう虫ちゅう

noun

adult and larval stages

Technical term in entomology referring collectively to both adult and larval forms, often used in contexts like pest control or life cycle descriptions.

• この殺さっ虫ちゅう剤ざいは成せい幼よう虫ちゅうの両りょう方ほうに効こう果かがある。

  This insecticide is effective against both adult and larval stages.

• 成せい幼よう虫ちゅうの形けい態たいの違ちがいを観かん察さつした。

  We observed the morphological differences between the adult and larval stages.