Proasellus meridianus (Racovitza, 1919)
Common name
One-spotted Waterlouse
One-spotted Water-slater
Synonyms
Asellus meridianus Racovitza, 1919
Status
GB IUCN status: Least Concern
ID Difficulty
2
Identification
This species can usually by distinguished from Asellus aquaticus by the continuous pale band along the posterior margin of the head. However, care is needed since the two species are frequently confused. The shape of the male first pereopod is diagnostic.
Distribution and Habitat
P. meridianus occurs throughout the British Isles, but in many areas it is much less frequently recorded than A. aquaticus.
Although found in similar places to A. aquaticus, it is rarely found in garden ponds, and is much less tolerant of pollution.
Distribution
Reference
Gregory, S. (2009) Woodlice and Waterlice (Isopoda: Oniscidea & Asellota) in Britain and Ireland. Field Studies Council/Centre for Ecology & Hydrology.
idBmigTaxa
91
BRC Code
Cru_1640
Centipedes 
Millipedes
Woodlice & Waterlice 
Landhopper