Common Pygmy Woodlouse Trichoniscus pusillus (Brandt, 1833)
An extremely common and very small Woodlouse, with a length of just 4mm at maximum. These are often found under logs in most damp habitats, but there is one other visually identical species of which the male needs examining under a microscope to identify. Trichoniscus pusillus was once considered to consist of two visually identical forms, both of which have been elevated to full species level, leaving us with the ‘true’ Trichoniscus pusillus Brandt, 1833 and Trichoniscus provisorius Racovitza, 1908.
Nottinghamshire (VC56) distribution of Trichoniscus pusillus
The records for the Nottinghamshire distribution map are currently provided by the following contributors - Trevor and Dilys Pendleton. Keith and Belinda Lugg. Darren Matthews. Derek Whiteley. Peter Kirby (Bentinck Tip & Void Invertebrate survey 2007). NBGRC. Peter Kirby (Ploughman Wood Invertebrate survey 1998 on behalf of the Nottinghamshire Wildlife Trust). Meg Skinner. Barry Lygo. David Shaw. Brian Wetton. Steve Gregory.

You can contribute your own records to help us gain an accurate status of this species in Nottinghamshire. Send an Excel spreadsheet of your records via the 'contact us' link at the top of the homepage.

Updated January 2024

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