Which insect belongs to the order Trichoptera?

• A. Caddisfly
• B. Camel Cricket
• C. Carpenter Bee
• D. Carpet Beetle

Answer: (A)

Trichoptera are the insects commonly called caddisflies. A key feature is their aquatic larvae, which construct protective cases out of sand, plant matter, and silk—these cases are a strong clue to this order. As adults, caddisflies look like small moths with hairy, unscaled wings held roof‑like over the body, and they have long antennae. This combination of a case-building aquatic larval stage and hairy-wing adults sets them apart from the others listed. Camel crickets belong to Orthoptera, often wingless or with short wings; carpenter bees are Hymenoptera and resemble large bees; carpet beetles are Coleoptera with hard wing covers. So the insect that belongs to Trichoptera is the caddisfly.