Bibio leucopterus


This is a medium-sized (wing length to 8mm), spring-flying Bibio with very milky-white wings in the male and uniformly dark wings in the female. Dwarf specimens of B. marci can superficially resemble leucopterus in the field, but leucopterus has a unique character in the almost equal-length spurs of the fore tibiae.

Identification difficulty

In woodlands and wetlands. 

When to see it

The flight period usually peaks in May.

UK Status

Bibio leucopterus is widespread and locally common, sometimes reaching impressive levels of abundance.

VC55 Status

Status in Leicestershire and Rutland unknown, probably under recorded.

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Leicestershire & Rutland Map


Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015

UK Map