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Fossil Fly Sex
A pairing pair of strashilids , fossil insects from the Jurassic that resemble modern aquatic flies .
Male Fly
A manly strashilid fly with grasping tree branch from the Jurassic , found in Inner Mongolia .
Male and Female Flies
A reconstruction of the manly strashilid fly front ( right ) and the distaff ( unexpended ) .
Winged Male
This fossil strashilid , a male , reveals its large , membrane-forming flank .
Fly Ecology
This example captures the likely ecology of Jurassic strashilids , from the larval stage to winged maturity . Finally , the flies shed their wings and return to the water to mate and die .
