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Question mark

Polygonia interrogationis


Larvae of the question mark butterfly, like all lepdiopteran larvae, mature through a series of stages called instars. Near the end of each instar, the larva undergoes a process called apolysis, in which the cuticle, a tough outer layer made of a mixture of chitin and specialized proteins, is released from the softer epidermis beneath, and the epidermis begins to form a new cuticle beneath. At the end of each instar, the larva moults the old cuticle, and the new cuticle expands, before rapidly hardening and developing pigment. Development of butterfly wing patterns begins by the last larval instar. - excerpt from wikipedia

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New York, USA

Lat: 42.27, Long: -74.72

Spotted on Sep 4, 2017
Submitted on Sep 5, 2017

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