Excurrent: attenuate, narrowly prolonged.
Excurved: curved outwards.
Ex larva: from or out of the larva: usually applied to specimens that have been bred from collected larvae.
Exochorion: that part of the chorion derived from the ectoderm: the outer layer of the chorion.
Exochorium: Heteroptera; a narrow marginal part of the hemelytra.
Exoderm: the outer skin or crust.
Exoloma: the apical margin of the wings.
Exophytic: relating to the outside of plant tissue.
Exoskeleton: the entire body wall, to the inner side of which muscles are attached.
Exotic: not a natives of the place where found: an introduced species: also any species occurring in any country outside of the limits of the country whose fauna is under consideration.