Hi, I'm working with samples of the Portuguese Continental Shelf; I found few specimens of Capitellidae with 11 thoracic segments, in which the first is achaetigerous and the other 10 with only capillary chaetae. The first chaetigerous segment is incomplete with just notopodium. I had a table with some Capitellidae genera and the most similar is Capitellethus, but I'm not able to find any description of C. dispar (the only NE Atlantic species).
Could you help me?