A mating pair of strashilids, fossil insects from the Jurassic that resemble modern aquatic flies.
A male strashilid fly with grasping limbs from the Jurassic, found in Inner Mongolia.
A reconstruction of the male strashilid fly (right) and the female (left).
This fossil strashilid, a male, reveals its large, membranous wing.
This illustration captures the likely ecology of Jurassic strashilids, from the larval stage to winged adulthood. Finally, the flies shed their wings and return to the water to mate and die.