Question: what is elytra in insects?
Answer: An elytron (/ˈɛlaɪtrɒn/; from Greek ἔλυτρον "sheath, cover"; plural: elytra /-trə/) is a modified, hardened forewing of certain insect orders, notably beetles (Coleoptera) and a few of the true bugs (Hemiptera) such as the family Schizopteridae; in most true bugs, the forewings are instead called hemelytra (sometimes ...