@thomaseverest I don't see the rationale behind the unacceptance of this subspecies by WoRMS citing a reference which did not use material from this population. There is however another reference which proposes this unacceptance: Almada F., Levy A. & Robalo J.I. (2016). Not so sluggish: the success of Felimare picta complex (Gastropoda, Nudibranchia) crossing Atlantic biogeographic barriers. PeerJ. 4: e1561 (https://peerj.com/articles/1561/). But this conclusion is apt for discussion: I'd like to see a Felimare picta from the Azores with the more typical patterns found elsewhere. Likewise I'd like to see the distinctive patterns of F. picta azorica elsewhere. DNA shows it's not a different species but this population is clearly distinctive.
Bottom line: I'd like to see further work done with this population but for now we should follow WoRMS even though its argument is not correct.