Anatomical description and biology of the splanchnotrophid splanchnotrophus gracilis hancock & norman, 1863 found parasitizing the doridacean nudibranch trapania tartanella ihering, 1886 at the ría de ferrol (Galicia, NW Iberian Peninsula)

1. Abad, M.
2. Díaz-Agras, G.
3. Urgorri, V.