Blephariceromorpha

Deuterophlebiidae, commonly known as the mountain midges, are a small family of nematocerous flies represented today by a single extant genus, Deuterophlebia. Adults have broad, fan-shaped wings, and males possess extraordinarily long antennae, which they use in territorial displays above swift mountain streams while awaiting emerging females.

The Blephariceromorpha are an infraorder of nematoceran flies, including three families associated with fast-flowing, high-mountain streams, where the larvae can be found.

The Nymphomyiidae are a family of tiny (2 mm) slender, delicate flies (Diptera). Larvae are found among aquatic mosses in small, rapid streams in northern regions of the world, including northeastern North America, Japan, the Himalayas, and eastern Russia. Around a dozen extant species are known, with two fossil species found in amber, extending back to the Mid Cretaceous. Under an alternative classification, they are considered the only living representatives of a separate, suborder called Archidiptera (or Archaediptera) which includes several Triassic fossil members. The family has char