| Periscelis occidentalis | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Diptera |
| Family: | Periscelididae |
| Genus: | Periscelis |
| Species: | P. occidentalis |
| Binomial name | |
| Periscelis occidentalis Sturtevant, 1954 | |
Periscelis occidentalis is a species of fly in the family Periscelididae. [1] [2] [3] [4]
Flies are insects with a pair of functional wings for flight and a pair of specialized hindwings called halteres for balance. They are classified as an order called Diptera, that name being derived from the Greek δι- di- "two", and πτερόν pteron "wings". The order Diptera is divided into two suborders, with about 110 families divided between them; the families contain an estimated 1,000,000 species, including the familiar housefly, horse-fly, crane fly, and hoverfly; although only about 125,000 species have a species description published. The earliest fly fossils found so far are from the Triassic, about 240 million years ago; phylogenetic analysis suggests that flies originated in the Permian, about 260 million years ago.
Periscelididae is a family of flies.
