Caddis Flies - Life Cycle
Caddis Flies of
Ontario
Caddisflies or sedge-flies (Order Trichoptera, from Greek trich, "hair", and ptera, "wings") Caddis are small moth-like insects that have two pairs wings. They are closely related to Lepidoptera (moths and butterflies) which have scales on their wings, and the two orders together form the superorder Amphiesmenoptera. Caddisflies have aquatic larvae and are found in a wide variety of habitats such as streams, rivers, lakes, ponds, spring seeps, and temporary waters (vernal pools). The larvae of many species make protective cases of silk decorated with gravel, sand, twigs or other debris. Many species of caddisfly larvae enter a stage of inactivity called
Caddisfly pupation occurs much like pupation of Lepidoptera. That is, caddisflies pupate in a cocoon spun from silk. Caddisflies which build the portable cases attach their case to some underwater object, seal the front and back apertures against predation though still allowing water flow, and pupate within it. Once fully developed, most pupal caddisflies cut through their cases with a special pair of mandibles, swim up to the water surface, cast off skin and the now-obsolete gills and mandibles,
The adult stage of caddisflies, in most cases, is very shortlived,
Caddisflies in most temperate areas complete their lifecycles Article Sources:
Photo Sources:
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