Allacma fusca


It is a large dark brown springtail reaching 3.5 mm in length. The fourth antennal segment (ant4) is divided into 16 subsegments; some setae on ant3 are longer than others. There are other similar species and certain identification requires detailed examination, if we cannot be certain that an image is Allacma fusca but it is likely to be this species, it is highlighted in a red box.

Identification difficulty

Found in a variety of moist habitats near to the ground surface.

When to see it

Peak of activity is from spring to autumn.

UK Status

Fairly common and quite widespread in Britain particularly in the southern half of the country.

VC55 Status

Fairly frequent in Leicestershire and Rutland.

be our species champion

Leicestershire & Rutland Map


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

UK Map