Oreogetonidae

Oreogetonidae is a family of flies in the order Diptera, belonging to the superfamily Empidoidea. The family comprises a single genus, Oreogeton, with 36 described species. These flies are widely distributed across North America, Europe, Asia, Australia, New Zealand, and particularly South America, where the majority of species are found.

==Description== Oreogetonidae are small to medium-sized, slender flies characterized by broad wings with a large anal lobe. Their wing venation includes distinctive patterns: the radial vein branches into four, the medial vein into three, and a large, irregular pentagonal discal cell is present in the wing's center. The two anal veins are weak and do not reach the wing margin. Additional features include a head with large compound eyes and a prolonged proboscis, antennae with three or fewer segments (often with a stylus or arista), and a thorax with bristles primarily on the notopleural and scutellar regions. The legs vary in form, occasionally modified, and the abdomen may be elongated or short depending on the species.