Invasion

Invasion Description

None

Geographic Extent

Morko, Stockholm Archipelago/Sweden/Baltic Sea (Hedman et al. 2011, 59 2.29' N, 17 41.45'E); in the Hanko/Finland/Archipelago Sea (Audzijonyte et al. 2014, Species A and B); Tvarrminne/Finland/Archipelago Sea (Smith 1955)