GB rarity status: Nationally Rare
Distribution and Habitat
Although apparently very rare, it is very elusive and additional sites must await discovery. The majority of known sites are coastal, the majority in south Wales, but it is capable of surviving away from maritime influences (such as Oxford City - BISG newsletter 28, pg1).
It seems to favour sites with a high degree of disturbance, either synanthropic or natural, and the presence of damp, highly organic, friable soil. It can be found under stones and dead wood, often several centimetres down within the underlying substrate. It is usually associated with soil-dwelling trichoniscids, typically Haplophthalmus mengii (with which it may be overlooked) and Trichoniscus pygmaeus.
This summary is based on the detailed account in Gregory (2009).