| Reference no. | Westman, K., R. Savolainen and M. Julkunen, 2002 |
| Ecosystem | Northern European Seas |
| Status | native |
| Abundance | common (usually seen) |
| Lifestage | adults |
| Regional database | |
| Remarks | Slickolampi Lake populations disappeared in the 1930s and in the 1960s due to the crayfish plague (Ref 80916). The species was unexpectedly caught again in test trappings in autumn 1971 and remained unexploited until 1979. |