It is spun by glands placed on the labium (the same part of the head as dragonflies modified into hunting mask). The constructions are spliced together and glued down to the substrate by a silken thread. Adults roost in shrubs and other plants during the day and fly at night. Collectors/filterers – omnivorous larvae feed on algae, detritus and small invertebrates that get caught in the net. Some species of microscopic zooplankton can enter diapause for several hundred years.) How to identify Adult caddisflies resemble moths, but with their wings folded back along the body. The larvae of many species build protective cases over their bodies using available bits of sand, twigs and other debris. But unlike moths, caddisflies spend most of their lives living in the water as larvae, which look like little worms. What do plants make which helps wildlife? Caddisfly larvae are aquatic, slender, with a segmented abdomen that is usually hidden within a portable protective case. Most of the caddisflies are herbivorous--that is, they eat decaying plant tissue and algae. The “caseless” larvae Habitat: Size: Life cycle: Movement: Caddisflies undergo complete metamorphosis. The adults are mothlike, holding their wings rooflike over their backs. Larvae crawl among the stones and sediments, or lurk for a prey in clumps of moss and algae. Net-spinning larvae are among the most abundant caddisfly larvae in running waters. Brachycentridae (Case-building caddisfly larvae) These creatures are vital links in the aquatic food chain, and their presence and numbers tell us a lot about water quality. Case-building caddisfly larvae use the silk to construct various portable shelters. True or False: it is good for river beds to be covered in a layer of soil? Leptoceridae (Case-building caddisfly larvae) Habitat: Subsequently creates the cocoon of silk around the body. Odontoceridae (Case-building caddisfly larvae) Feeding: Some caddisfly larvae enter diapause for a few weeks to several months. Caddisfly larvae can take a year or two to change into adults. Retreats are equipped with trapping nets, positioned perpendicular to the current, in order to capture organic particles and even small animals drifting in a stream. Dead alderfly larvae are used as bait in fishing. When the larvae are fully grown and ready to pupate, they fortify the retreats with additional material and seal the entrance. Their life cycle includes four stages – egg, larva, pupa and adult. Larvae continuously clean their nets by picking off inorganic pieces and consuming organic matter. At least one specie ( Phylloicus bromeliarum Müller, 1880) is recorded living in water retained in bromeliad tanks. There are about 50 species of mosquitoes in our state. As adults, they usually only live for a few weeks, do not eat, and focus only on reproduction. When the larva is fully grown, it enters the pupal phase. Movement: They drag the case with them as they move, with only their front ends and legs sticking out. Some aquatic plants developed modification involving the use of air chambers in the leaves (in order to be held in vertical position). Others prefer lakes, ponds, and other quiet waters, including marshes. Legs can have modifications as like sharp endings, hooks, or rows of setae. It turned out that caddisfly larvae were the only predator that dared eat the eggs. What does the caddisfly larvae like to eat? Hydropsychidae (Net-spinning caddisfly larvae) Life Cycle: Adult caddisflies are short lived and spend most of their time mating or laying eggs. They protect soft abdomen from predators and abrasion from coarse particles drifting in stream. Climbers or crawlers resembling hermit crabs. Their purpose is to help the larvae in movement, building the shelter, or collecting food. These larvae make a silken net on top of rocks and feed on the algae and diatoms that are swept by the current into their nets. Caddisflies are closely related to moths (order Lepidoptera), which they are often mistaken for. Among the more than 1,000 species of caddisflies in North America, the food habits vary. Many species live in tubes or cases they construct from sand, pebbles, leaves, and wood, held together by an adhesive substance that the larvae secrete. Larvae of some species move under the rocks, where they build solid shelters of sand and stones to protect the transforming pupae. Consequently, species depending on algae use smaller mesh size than the species specializing on animal prey. The net, which is stretched across the plant stems, stones, or arms constructed by the larvae, can be in the form of extension of the shelter or placed aside. Size: 0.2-0.5 inch (6-12 mm). 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