Stenophiloscia glarearum Verhoeff, 1908


Stenophiloscia zosterae Verhoeff, 1928


  • GB IUCN status: Vulnerable
  • GB rarity status: Nationally Rare

ID Difficulty


Stenophiloscia glarearum is a small slow moving species, reaching 6mm in length.  Live specimens appear pinkish, somewhat reminiscent of a large pale Trichoniscus pusillus agg. or a pale immature Porcellio scaber. It has a stepped body outline and antennae with three flagella segments.

John Walters
John Walters
John Walters
Steve Trewhella
Steve Trewhella
Keith Lugg
Keith Lugg
Keith Lugg


Apparently very rare in Britain, Stenophiloscia glarearum is only known from a handful of southern coastal sites from Cornwall (BMIG Newsletter 39, pg.7) to Norfolk. However, it has proved extremely elusive, even at known sites, and is certainly very under-recorded. It has not been recorded from Ireland. 


Specimens have been collected from the storm drift line and above on unvegetated or sparsely vegetated shores composed of shingle or sand, either in pit-fall traps or clinging beneath strandline driftwood. At Cole Point, Essex, it was found with Trichoniscus pusillus, Philoscia muscorum, Porcellio scaber and Armadillidium album (Gregory, Whiteley & Wilde, 2001).

This summary is based on the detailed account in Gregory (2009).


Gregory, S. (2009) Woodlice and Waterlice (Isopoda: Oniscidea & Asellota) in Britain and Ireland.  Field Studies Council/Centre for Ecology & Hydrology.

Gregory, S., Whiteley, D, & Wilde, I (2001) Some observations of Stenophiloscia zosterae (Verhoeff, 1928) at Colne Point NNR, North Essex.  Bulletin of the  British Myriapod & Isopod Group 17: 79-80. 

BRC code