Polycera quadrilineata - Harlequin - Harlekijnslak

Polycera quadrilineata  (O.F. Müller, 1776)

Harlequin - Harlekijnslak

Zeelandbrug, the Netherlands, 14-4-2016. In vitro photo specimen A, L: 37 mm, 19-4-2016.

Zeelandbrug, the Netherlands, 14-4-2016. In vitro photo specimen A, 19-4-2016.

Zeelandbrug, the Netherlands, 14-4-2016. In vitro photo specimen A, 19-4-2016.

Gorishoek, the Netherlands, 7-5-2016. In vitro photo specimen B, L: 36 mm, 8-5-2016.

Gorishoek, the Netherlands, 7-5-2016. In vitro photo specimen C, L: 23 mm, 8-5-2016.

Gorishoek, the Netherlands, 7-5-2016. In vitro photo specimen B (bottom) and C (top), 8-5-2016.

Kattendijke, the Netherlands, 24-1-2023. In vitro photo specimen D, L: 27 mm, 1-2-2023.

Kattendijke, the Netherlands, 24-1-2023. In vitro photo specimen E, L: 31 mm, 1-2-2023.

Kattendijke, the Netherlands, 24-1-2023. In vitro photo specimen F, L: 25 mm, 1-2-2023.

Kattendijke, the Netherlands, 24-1-2023. In vitro photo specimen F (left) and E (right), 1-2-2023.

Kattendijke, the Netherlands, 24-1-2023. In vitro photo specimen E (left) and D (right), 1-2-2023.

Kattendijke, the Netherlands, 24-1-2023. In vitro photo specimen F, 1-2-2023.

Kattendijke, the Netherlands, 24-1-2023. In vitro photo specimen F, 1-2-2023.

Kattendijke, the Netherlands, 30-12-2023. In vitro photo specimen G, L: 32 mm, 1-1-2024.

Kattendijke, the Netherlands, 30-12-2023. In vitro photo specimen G, 1-1-2024.

Kattendijke, the Netherlands, 30-12-2023. In vitro photo specimen G, 1-1-2024.

Zeelandbrug, the Netherlands, 12-6-2018.

Zeelandbrug, the Netherlands, 14-4-2016.

Zeelandbrug, the Netherlands, 14-4-2016.

Zeelandbrug, the Netherlands, 25-8-2018.