el·y·tron
(
ĕl
i-tr
ŏn
′)
n.pl. el·y·tra(-tr
ə)
Either of the leathery or chitinous forewings of a beetle or a related insect, serving to encase the membranous hind wings used in flight.Also called wing case.
[New Latin, fromGreekelutron, sheath; see wel-2 in the Appendix of Indo-European roots.]
ely·troid′(-troid′)adj.

elytron