Abstract
The genus Paraxenylla so far has nine described species (Queroz & Deharveng 2008). All the species, except one, live in marine littoral environments and probably feed on algae and diatoms (Palacios-Vargas & Janssens 2006). One species is cosmopolitan, the others are living in warm parts of the world (Peru, Cuba, Mexico, New Caledonia, Gambia, Japan). P. sooretamensis Queiroz & Deharveng, 2008 was described from an inland forest in Brazil. The cosmopolitan species, P. affiniformis (Stach, 1930), is found north to the German coast. A new Norwegian species breaks both the southern distributional pattern and the morphological conformity of the genus.
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