| Reference no. | Greve, W., 1975 |
| Ecosystem | North Sea |
| Status | native |
| Abundance | |
| Lifestage | adults |
| Regional database | |
| Remarks | Known throughout the North Sea, Skagerrak and Kattegat (Ref. 1094, p. 5), and from Western Dutch Wadden Sea (Ref. 1509). Exhibits a single dominant population maximum each year from mid May until end of June (Ref. 3031). Also in Ref. 3593. |