Case-making-larvae
Guides
Hydroptila
microcaddisflies
Hydroptila is a large genus of microcaddisflies (family Hydroptilidae) with worldwide distribution. Adults are small, typically collected using ultraviolet light traps near freshwater habitats. Larvae are known as "purse-case makers" that construct portable cases from silk and environmental materials such as filamentous algae. The genus exhibits substantial species diversity, with numerous regional endemics documented across Europe, Asia, and the Americas.