The taxonomic status of Hymenodora (Crustacea: Oplophoroidea): morphological and molecular analyses suggest a new family and an undescribed diversity deep in the sea Author Lunina, Anastasiia Author Kulagin, Dmitry Author Vereshchaka, Alexander alv@ocean.ru text Zoological Journal of the Linnean Society 2024 Zool. J. Linn. Soc. 2023-08-14 200 2 336 351 http://dx.doi.org/10.1093/zoolinnean/zlad077 journal article 296805 10.1093/zoolinnean/zlad077 a5f57d75-9b7c-46dc-b11f-ee2fc4200e29 0024-4082 11239996 E48CE650-52B3-4853-9249-D228B9E00306C Superfamily Oplophoroidea Dana, 1852 Diagnosis (after Chace 1986 , amended): Rostrum immovably attached to carapace; antennular flagella simple, without accessory branches; mandible with palp, molar and incisor processes not deeply separated; third maxilliped elongate, five-segmented, with well-developed exopod; all pereopods with well-developed exopod, pereopods 1–3 with strap-like epipod, pereopods 1 and 2 with well-developed chela and undivided carpus, pereopods 3–5 moderately long, carpus shorter than propodus; pleopods bearing appendices interna.