This page represents the following TreeOfLife-200M taxonomic path.[1]
Apsilocephalidae is a family of flies within the superfamily Asiloidea. The group includes both extant and extinct representatives. Extant genera include Apsilocephala (found in North America), Clesthentia and Clesthentiella (found in Tasmania), and Kaurimyia (found in New Zealand).[2]
Based on observations of specimens in the TreeOfLife-200M dataset, members of this family exhibit a distinct body form typical of the group.[1] Morphological characteristics include a specific body shape, wing venation featuring a closed m3 cell and a long cup cell, and a horizontal bm-cua1 cross vein. Additionally, the hind legs are notably longer and thicker than the other pairs.[2]
The fossil record of Apsilocephalidae is well-represented in mid-Cretaceous Burmese amber, with several described genera including Burmapsilocephala, Kumaromyia, Myanmarpsilocephala, Irwinimyia, and Cascomixticus. The genus Cascomixticus is particularly noted for its elongate, porrect proboscis, which is longer than the head, as well as a long tubular hypopharynx and a sharply pointed labrum. These features suggest specialized feeding adaptations, potentially for imbibing nectar or plant exudates.[2]