Nanocladius
Nanocladius is a genus of non-biting midges of the bloodworm family Chironomidae. Larvae either live commensally on or as parasites of aquatic insects in nymphal stages; hosts include mayflies, stoneflies, dobsonflies, or damselflies. The larvae attach to their hosts by forming silken tubes which they later pupate in. They feed on the hemolymph of their host.