A pseudoscorpion (Neobisium maritimum)

Distribution data supplied by the Ocean Biodiversity Information System (OBIS). To interrogate UK data visit the NBN Atlas.Map Help



Neobisium maritimum is approximately 3.2 mm long and is similar in appearance to a tiny tail-less scorpion. It has two-pairs of eyes positioned at the front of the cephalothorax.

Recorded distribution in Britain and Ireland

South and west coasts only. There are scattered records of the species in south west Cornwall, south west Wales, the Isle of Man, the Isle of Wight, Anglesey and the coasts of Ireland.

Global distribution

In Europe, Neobisium maritimum has been recorded on the Atlantic coasts of Ireland, England and western France.


Neobisium maritimum is found in rock crevices and under stones from the top of the upper shore to the splash zone,

Depth range


Identifying features

  • Cephalothorax with four eyes.
  • Galea a low or rounded tubercle.
  • Male genital armature consisting of a simple ring-like lateral apodema frame with no additional processes.
  • Lateral genital sacs weakly to moderately developed.
  • Female genitalia without spermathecal pockets.

Additional information

No text entered

Listed by

- none -


  1. Hayward, P.J. & Ryland, J.S. (ed.) 1995b. Handbook of the marine fauna of North-West Europe. Oxford: Oxford University Press.

  2. Hayward, P.J. & Ryland, J.S. 1990. The marine fauna of the British Isles and north-west Europe. Oxford: Oxford University Press.

  3. Legg, G. & Jones, R. E. 1988. Pseudoscorpions. Avon: The Bath Press. [Synopses of the British Fauna No. 40.]


  1. Cofnod – North Wales Environmental Information Service, 2018. Miscellaneous records held on the Cofnod database. Occurrence dataset: https://doi.org/10.15468/hcgqsi accessed via GBIF.org on 2018-09-25.

  2. Fenwick, 2018. Aphotomarine. Occurrence dataset http://www.aphotomarine.com/index.html Accessed via NBNAtlas.org on 2018-10-01

  3. NBN (National Biodiversity Network) Atlas. Available from: https://www.nbnatlas.org.

  4. OBIS (Ocean Biodiversity Information System),  2024. Global map of species distribution using gridded data. Available from: Ocean Biogeographic Information System. www.iobis.org. Accessed: 2024-04-23


This review can be cited as:

Mayhew, E.M. 2008. Neobisium maritimum A pseudoscorpion. In Tyler-Walters H. and Hiscock K. Marine Life Information Network: Biology and Sensitivity Key Information Reviews, [on-line]. Plymouth: Marine Biological Association of the United Kingdom. [cited 23-04-2024]. Available from: https://www.marlin.ac.uk/species/detail/1894

Last Updated: 17/04/2008