Diptera: Flies - Alex Wild Photography
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Musca domestica

Musca domestica

Young house flies (Musca domestica) fill an inflatable structure- the ptilinum- with hemolymph to break free from the hard shell of the puparium. Once free, the ptilinum collapses back into the head. Urbana, Illinois, USA

ptilinummetamorphosisdipterabiologyinsects