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Hi

There is very little written about the early stages of European Lauxaniidae. Very well done on for finding and rearing these.

It's a male. The acrostichals between anterior dorsocentrals are in six rows, and blue green iridescence would point strongly to Calliopum aeneum, but one would need to see genitalia.

When dead, make sure both the pupal case and specimen are stored together on the same pin.

Mark