What Do They Eat? Caddisfly larvae obtain oxygen dissolved in water through thin and soft skin. Caddisflies, members of the order Trichoptera, are aquatic as larvae, but terrestrial as adults. Once they become adults, caddisflies stop feeding to concentrate on breeding, then die after a few weeks. The adults are 1.5 to 2.5 cm (0.6 to 1 in) long. Adults have wings shaped like a tent, segmented bodies without tails, and antennae that give a moth-like appearance. But unlike moths, caddisflies spend most of their lives living in the water as larvae, which look like little worms. Adult caddisflies resemble moths, but with their wings folded back along the body. Immatures are found in water, usually in flowing water. Individual species can be difficult to identify. Caddisfly is a type of riverfly and they live where water is clean. They eat small aquatic vascular plants, nymphs, and larvae. Larvae undulate their body to create a flow of oxygenated water through the case. Caddisflies are perhaps the most underappreciated aquatic insect family. Habitat and Food Source(s): Adults do not feed and have vestigial mouth parts; larval stages have chewing mouthparts. Fifteen or so species, occur in the Low Arctic, but only one species, Apatania zonella, is common in the High Arctic.Other common arctic caddisflies include Agrypnia straminea and Chilostigmodes areolatus.One arctic species, Sphagnophylax meiops, is an unusual caddisfly … However, when food is relatively abundant, it will pick off the dead organic matter from the net to increase filtering and capturing efficiency for live animal prey. Why then are caddisfly imitations so under utilized and why are caddisflies so under rated as a trout food? As larvae, these tiny creatures forage through the leaf litter and mosses of the woodland floor, feeding on decaying plant matter, slime molds and algae. two adult caddisfly imitations hidden among many mayfly imitations. Caddisfly larvae go through a big change to become adults with wings. They eat small aquatic vascular plants, nymphs, and larvae. About 4500 species exist worldwide; some 1000 species are known in North America. Larvae are scavengers, herbivores or predaceous. See what you can find and help the caddisfly larvae make a coat. Caddisflies make shells … Most, but not all, caddisfly … What do land caddisflies eat? If you study the food that trout eat, you will discover that they eat at least as many caddisflies as they do mayflies, maybe more. They help keep these bodies of water clean by feeding on fallen leaves and other detritus, while also acting as a source of food for predators. Some species have very long antennae. Caddisflies serve as a possible food source for a whole host of animals including: Spiders; Birds; Fish; Pupal stage shells/casings. The wings of caddisflies are covered with small hairs, distinguishing them from the scaled wings typical of moths. Unlike moths, they have a fine set of hairs on their wings instead of scales. Caddisfly, common name for certain aquatic insects that resemble small moths. Predators. Caddisfly larvae are more readily identified, with many having distinctive cases. Before they can do this, they need to build a protective coat from things they find in the river. When food is scarce, a caddisfly will eat about any organic matter (living or dead) it encounters on the net, attached to its retreat, or living close to the net. Some species have branched gills or humps on the sides of the body (in order to increase the body surface). They can spin silk and use it to form nets to strain material from the water to eat or to form cases in which to … To many non-anglers, they look like little moths. The rivers and streams that carry … Little worms many mayfly imitations 1 in ) long the caddisfly larvae go through big. Readily identified, with many having distinctive cases vestigial mouth parts ; larval have. 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