Harpacticoida species (order) Sars, G.O., 1903 *
Ritthem - Strandje, the Netherlands, 28-5-2025. In vitro photo specimens A, length excluding tail 0.7 mm, 30-5-2025. In adhering water of a group of washed ashore Tubularia indivisa (Oaten pipe hydroid - Penneschaft).