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In a preserved aquatic sample collected in freshwater stream
a pupa 16 mm length end to end

two extremities different
like an egg on a flat surface, the contact surface is planar and breaks the curvature of the egg (the bottom)

The egg "chitinous" is segmented. Its ends are different. On the one hand, a pair of small protrusions as spiracles and on the other side, ends such as a small spatula
Contains a larva that I have not observed yet



merci
SDS