prescutum
[/prɛˈskjuːtəm/]
Definitions
1. noun
the surface or part of a wing of an insect, especially a beetle, between the elytra and the wing itself
“The entomologist studied the prescutum of the beetle specimen.”
2. noun
a similar surface or part of an insect’s wing
“The prescutum of the moth’s wing is a distinctive feature.”