Nagurus nanus (Budde-Lund, 1908)


GB IUCN status: Not applicable (non-native)

ID Difficulty


Nagurus nanus is a small woodlouse (to 5 mm body length) with an oval outline. The body is dark brown with two patches of pale yellow mottling situated either side of a broad dark brown central stripe (rather akin to that seen in our native Trachelipus rathkii). It has five pairs of pleopodal lungs. It is readily identified from male pleopods. 

A brief description of this species, with figures, is given in Gregory (2014).

Steve Gregory
Steve Gregory

Distribution and Habitat

A single specimen of Nagurus nanus was collected from a heated glasshouse in Belfast Botanic Gardens in 1911 (Sutton, 1972).  No additional observations were made until several specimens were collected from Eden Project (Rainforest Biome), Cornwall, in 2004 and 2005. It has not been refound during subsequent surveys. 


Specimens were collected from leaf-litter samples by Tullgren funnel extraction.

This species has been widely introduced throughout the tropics where it typically occupies disturbed habitats.

This account is taken from Gregory (2014).


Gregory, S. (2014) Woodlice (Isopoda: Oniscidea) from Eden Project, Cornwall, with descriptions of species new to Britain, and poorly known British species. Bulletin of the British Myriapod & Isopod Group 27: 3-26. 

BRC code