Exotoky: is applied to that form of reproduction where the eggs are developed outside of the body of the insect and without care by the mother see endotoky.
Ex ova: from or out of the egg: applied to specimens that have been bred from the egg stage.
Expanded: spread or flattened out: applied to Lepidoptera when set for the cabinet.
Expanse: the distance between the apices or other widest point of the wings when fully spread.
Expansio alarum: the wing stretch; see expanse.
Expiratory: relating to the act of expiration, when the abdomen is contracted and the air contained in the abdominal tracheae is presumably forced out of them.
Explanate: spread out and flattened; applied to a margin.
Explicate: unfolded; open; without folds or plica.
Exsculptate -tus: a surface with irregular, more or less longitudinal depressions, as if carved.
Exscutellate: having no scutel.