Strepsipterans

^jp here are 8 families and 560

_ specics in the order Strepsiptera.

Male strepsipterans have large, fan-shaped hindwings and tiny, straplike forewings. The hindwings have a twisted appearanee, giving rise to the other common name for this order - twisted-winged parasites. The grublike females are wingless and, typically, legless. They usually live as endoparasitcs, inside the bodies of other insects. Strepsipterans use species from many different orders as hosts but favor bugs, wasps, and bees.

Males detect mates by the sexual phcromones that females emit and then cling to the host's body and mate with the female inside. Metamorphosis is complete. Kggs hatch inside the female. Hundreds or thousands of tiny, six-legged larvae (triungulins) emerge from the host, and each goes in search of its own host. Once a host is found, the larva uses an enzyme to get inside and molts to become a legless endoparasite, feeding on the host's body fluids and tissues. Pupation occurs inside the host. Males emerge and fly off, killing the host in the process, but females remain inside the live host.

Some species of strepsipterans are useful control agents of pests such as crickets and planthoppers.

Mali

Sty lops SPECIES have a highly distinctive shape. They have an interesting biology that has led to them being used as the emblem of a major entomological society.

hindwings have slightly twisted appearance

Most huh female stylopid inside host bee projects partly from between segments of the bee's abdomen

Order STREPSIPTERA

Family stylopidae

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