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chorion

Edited by Ralph Harbach on Mon, 03/22/2010 - 23:37

Abbreviation:

C

Definition:

The outer covering or shell of the insect egg secreted by the follicular epithelium and consisting of one or more layers. In mosquito eggs, usually consisting of two layers, the inner and outer chorions, but a delicate middle layer, lamellate membrane, occurs in Stegomyia aegypti and perhaps other species.

Synonyms:

covering, egg-capsule, eggshell, egg shell, shell
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