Torrential-streams
Guides
Oreoleptidae
Oreoleptid Flies
Oreoleptidae is a monotypic family of flies established in 2005 based on the single species Oreoleptis torrenticola. The family was discovered in the Rocky Mountains where larvae inhabit torrential streams and groundwater wells. Adults were reared from larvae after decades of larval collections that could not be matched to any known adult stage. The family shows morphological affinities to both Pelecorhynchidae and Athericidae/Tabanidae, with distinctive male genitalia linking it to the latter group.
Oreoleptis torrenticola
Oreoleptis torrenticola is the sole species in the monotypic genus Oreoleptis and family Oreoleptidae, a family of flies established in 2005 based on this single species. The species was described from specimens collected in the Rocky Mountains, where its larvae inhabit torrential streams and have also been found in groundwater wells. This enigmatic dipteran represents a distinct lineage whose larval morphology shows similarities to Athericidae and Tabanidae but possesses distinctive abdominal prolegs.