Distribution and Habitat
P. muscorum is an abundant species in lowland England and Wales, but becomes increasingly sparse in northern England and becomes restricted to coastal sites and low-lying river valleys in Scotland.
It has a strong preference for grassy sites of all sorts, and tends to avoid dense woodland (a habitat more suited to the recently discovered P. affinis). Although often numerous within grassland swards, it is most easily found beneath refuge sites, such as dead wood, stones or even dried cowpats.
This summary is based on the detailed account in Gregory (2009).