The distinction between Isotomurus palustris and unifasciatus is that Isotomurus unifasciatus has a continuous dark line down its midline but is otherwise uniformly pale, while Isotomurus palustris has a slightly discontinuous dorsal line and mottled patterning on the sides of its abdomen.
Damp or wet places.
All year round.
Isotomurus unifasciatus is probably widespread in Britain but records are hopelessly mixed with Isotomurus palustris.
Status in Leicestershire and Rutland not known.
Leicestershire & Rutland Map
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