Oplophoridae Dana, 1852

Lunina, Anastasiia, Kulagin, Dmitry & Vereshchaka, Alexander, 2024, The taxonomic status of Hymenodora (Crustacea: Oplophoroidea): morphological and molecular analyses suggest a new family and an undescribed diversity deep in the sea, Zoological Journal of the Linnean Society (Zool. J. Linn. Soc.) 200 (2), pp. 336-351 : 346

Family Oplophoridae Dana, 1852

Diagnosis ( Fig. 7F–J ): rostrum dentate both dorsally and ventrally; second maxilla with proximal endite bearing reduced papilla and submarginal lamina; first maxilliped with three-segmented endopod (if two-segmented then as long as distal endite); second maxilliped with distal segment suboval and attached almost transversely to preceding joint.

Figures

Figure 7. Morphological characters distinguishing three families of Oplophoroidea.A–E, Hymenodoridae (Hymenodora frontalis, St. 7497 d271) mandibles (A), second maxilla (B), proximal endite of second maxilla (C), first maxilliped (D) and second maxilliped (E). F–J, Oplophoridae (Systellaspis debilis, 179RT 23.1) mandibles (F), second maxilla (G), proximal endite of second maxilla (H), first maxilliped (I) and second maxilliped (J). K–O, Acanthephyridae (Acanthephyra quadrispinosa Kemp, 1939, AMK87 7277-D13) mandibles (K), second maxilla (L), proximal endite of second maxilla (M), first maxilliped (N) and second maxilliped (O). All scale bars:1 mm.