Marinogammarus obtusatus ( Dahl, 1938 )

Vader, Wim & Tandberg, Anne Helene Solberg, 2019, Gammarid amphipods (Crustacea) in Norway, with a key to the species, Fauna norvegica 39, pp. 12-25 : 21

15. Marinogammarus obtusatus ( Dahl, 1938)

Synonyms: Chaetogammarus obtusatus auct.; Eulimnogammarus obtusatus auct.; Echinogammarus obtusatus auct.

Description and illustrations: Dahl 1938, p. 127 ( as Gammarus o.), figs 11-21; Stephensen 1935 -42, figs 45-46pp; Sexton & Spooner 1940, p. 650, fig.5; Pinkster & Stock 1970, p. 207, figs 2 a-g ( Eulimnogammarus o.); Lincoln 1979, p. 273, fig. 126 ( Eulimnogammarus o.).

Ecology and habitat: Under stones in the lower intertidal, preferably on a substrate of sand, gravel, or shells; occurs also on intertidal pebble beaches. Tolerates some freshwater flow, but not much fine sediment. Penetrates less far into fjords than? M finmarchicus : in Hardanger to Samlafjorden (Brattegard 1966), in the Sognefjord to Lavik ( Vader 1977a)

Distribution in Norway: Probably occurs along the entire Norwegian coast, but absent in Svalbard.