instar noun - life stage of an arthropod after molting, and shedding of skin. In larvae (immature insects with complete metamorphosis), the instars are numbered--the first instar being the stage after the hatching of the egg and before the first molt, etc.
Contributed by Cotinis on 24 May, 2007 - 8:04pm Last updated 26 May, 2007 - 2:58am
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