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Thanks to Sarah for welcoming me in this new nice site.

The pupae have been collected from a carcass found in a ground hole, during the last Jun. Unfortunately, no adults have emerged from my pupae till now. Thanks to Paul Beuk and thanks to Tony Irwin for his information about the fact that my pupa is a Muscina one.
Please, may I have a new information? In the Muscina case, do posterior spiracles modify in significantly way during the change of the insect from the larva stage to the pupa stage? Some specimens of Muscina stabulans that I have found have posterior spiracles very different from those I can observe on the relevant pupae.

Many thanks again for your kind help!

Gabriella