|Bibio pomonae, female|
|Bibio pomonae, male|
Bibio pomonae can reach a length of about 10–13 millimetres (0.39–0.51 in), while the length of the wings reaches 8–12 millimetres (0.31–0.47 in). The basic body color is shiny black, with a black long abdomen, deep crimson-red femurs and dark tibiae and tarsi. Front tibia show a pair of large spurs. Wings are milky-white with darkened veins on the costal area and a dark spot on the leading edge. The 10-segmented antennae are relatively short and thick. Males and females are very different, as the holoptic males show very large eyes and a flattened abdomen, while the females have small head and eyes and a sharp abdomen. The larvae are reddish brown.
Adults are late summer flyers, but they occur from May to October.  In Norway's Hardangarvidda it has been observed that they appear in large numbers every third year, which suggests the larvae take three years to develop.
This fly occurs in hedge rows of hill countries, on moorland and mountain birch forests, in woodland edges, fields and in wetlands.
- Freeman, Paul; Lane, Richard P. (1985). "Bibionid and Scatopsid flies, Diptera: Bibionidae & Scatopsidae". Handbooks for the identification of British insects. 9 (7). London: Royal Entomological Society of London: 74.
- Wildlife Trust
- Triplethorne & Johnson (2004). Borror's Introduction to the Study of Insects, Brooks-Cole. 715-716
- Key to Highland Bibionids
- Borgstrøm, Reidar and Skartveit, John, Russefluga (Bibio pomonae): Eit viktig insekt i høgfjellsøkosystemet, Naturen, p.20-24 DOI: 10.18261/issn.1504-3118-2018-01-04
- Fauna Europaea