Fossil Fly Sex
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.
Male and Female Flies
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.
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Stephanie Pappas is a contributing writer for Live Science, covering topics ranging from geoscience to archaeology to the human brain and behavior. She was previously a senior writer for Live Science but is now a freelancer based in Denver, Colorado, and regularly contributes to Scientific American and The Monitor, the monthly magazine of the American Psychological Association. Stephanie received a bachelor's degree in psychology from the University of South Carolina and a graduate certificate in science communication from the University of California, Santa Cruz.