Erecto-patent: the wings of Hesperids when at rest; primaries erect, secondaries horizontal.
Eremochaetus: Diptera in which there is a general absence of bristles.
Ergatandrous: applied to ants with worker-like males.
Ergatogynous: applied to ants with worker-like females.
Ergatoid: sexually capable, wingless ants, resembling workers.
Ericeticolous: living in poor, sandy or gravelly places.
Eroded -sus: gnawed; a margin with irregular teeth and emarginations.
Eruca: broadly a larva: more specifically a caterpillar.
Eruciform: like a caterpillar in form or appearance.
Erucina: the caterpillar-like larvae of sawflies and the like.