DIPLOPODA (millipedes) > CHORDEUMATIDA > Craspedosomatidae

This relatively large brown species, that averages around 17-20mm long, has well-developed paranota and, as such, could be mistaken for a Polydesmus flat-backed millipede at first sight, except that it has 30 rather than 20 body segments. When viewed from above you can clearly see the dorsal groove and the paranota, which have well-rounded rather than square-cut front corners. Nanogona polydesmoides also has conspicuous eyes comprising numerous well-pigmented ocelli whereas Polydesmus species completely lack eyes. The possible confusion with Polydesmus has resulted in the common name of False Flat-back.

They are a widespread and quite common species particularly in deciduous woodland, but can also occur in other habitats including gardens and on waste ground, as well as having a strong association with caves. Adults have been found throughout the year, but are more frequently recorded through the autumn and winter months. In woodland environments they'll typically be found under deadwood or felled logs, or amongst damp leaf litter.