sp. nov. (Nudibranchia, Trinchesiidae), a corallivorous pest species in the aquarium trade.

(Nudibranchia: Trinchesiidae) is a novel species that feeds on corals in the genus (Scleractinia: Acroporidae) which are economically important in the aquarium industry. Nuclear-encoded H3, 28SC1-C2, and mitochondrial-encoded COI and 16S markers were sequenced. Phylogenetic analysis, Automatic Barcode Gap Discovery (ABGD), morphological data, and feeding specialization all support the designation of as a distinct species.