Snow-midge
Guides
Diamesa nivoriunda
winter midge, snow midge
Diamesa nivoriunda is a species of non-biting midge in the family Chironomidae. Adults are active during winter months and have been observed walking on snow during warm spells. Like other members of the genus Diamesa, this species does not feed as an adult. The larvae develop in cold, running water where they feed on organic debris. The species belongs to a group commonly referred to as "winter midges" or "snow midges" due to their cold-season activity pattern.