吸血昆虫 blood-sucking insect

悪党面(あくとうづら)とは、人間だけでなく昆虫にも使えそうです。
でも、私達は善人面をした悪党を見抜く目を養わなくてはいけませんね。

The word "villainous apearance" can be used not only for humans but also for insects.
Yet, regardless of appearance, it is important that we need to have an eye that distinguishes the bad guys who pretend to be good.