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There are 2 species of Fucellia known from The Netherlands: F. maritima and....F. fucorum :)
The latter species had been recorded for the first time for our country from Schiermonnikoog, an Island next to Ameland, were I caught this larva. The number of lobes on the anterior spiracle is (in many larva) a bit variable and I guess it's within the range for this species.

edit: unfortunately I do not have this Ferrar-book, just a few copies of some families.