The family Opisidae (Crustacea: Amphipoda: Lysianassoidea) in Australasian waters Author Stoddart, H. E. Author Lowry, J. K. text Zootaxa 2010 2010-05-20 2479 1 22 38 https://biotaxa.org/Zootaxa/article/view/zootaxa.2634.1.5 journal article 10.11646/zootaxa.2634.1.5 1175-5326 10094183 Normanion whoi sp. nov. ( Figs 3 , 4 ) Type material . HOLOTYPE , female, 3.2 mm , MV J61508 , south of Point Hicks , Victoria , Australia , 38°17.70'S 149°11.30'E , 400 m , coarse sand, gravel and mud with many sponges, WHOI epibenthic sled, 24 July 1986 , M.F. Gomon et al. , RV Franklin , stn SLOPE 40 . PARATYPES : 1 female , MV J14615 and 2 females , AM P.81162, same data as holotype ; 1 female , MV J61509 , off Freycinet Peninsula , Tasmania , Australia , 41°58.60'S 148°38.80'E , 500 m , coarse shell, WHOI epibenthic sled, 27 July 1986 , M.F. Gomon et al. , RV Franklin , stn SLOPE 47 . Type locality . South of Point Hicks , Victoria , Australia , 38°17.70'S 149°11.30'E , 400 m depth . Etymology . The species is named for the epibenthic sled, WHOI, developed at the Woods Hole Oceanographic Institute, Massachusetts , USA . Diagnostic description . Antenna 1 callynophore present. Eyes present. Mouthpart bundle subconical. Mandible left incisor with strongly convex margin, smooth, right with slightly convex margin, smooth; lacinia mobilis absent; molar present, setose; palp attached midway, article 2 longer than article 3. Maxilla 1 outer plate with 11 setal teeth in an 8/3 crown arrangement, outer row with cusps in 1 row; palp apical margin serrate, with apical robust setae. Maxilliped palp 4-articulate, article 4 vestigial. Gnathopod 1 weakly chelate; ischium long; carpus posterior margin not produced, curved; propodus subovate, proximal margin produced into strong posteroproximal lobe, palm serrate, posterodistal corner produced into a short acute spine with 3 robust setae. Gnathopod 2 minutely chelate; carpus longer than propodus (about 1.5x); palm obtuse. Pereopod 4 coxa posteroproximal excavation large. Pereopods 5–7 basis with smooth posterior margin; [dactylus not known]. Epimeron 3 posterior margin smooth, posteroventral corner broadly rounded. [ Uropod 3 unknown.] Telson about as long as broad, entire, distally emarginate, without dorsal robust setae. Male not known. Remarks . Unfortunately all specimens lack the distal articles of pereopods 5–7 and uropod 3. Normanion whoi is similar to N. amblyops , N. abyssi and N. hipposideros in having a vestigial article 4 on the maxillipedal palp. It differs from N. amblyops and N. abyssi in its strongly serrate gnathopod 1 palm and from N. hipposideros in having 11 setal teeth on maxilla 1 outer plate, each with only one set of cusps, and a weakly chelate gnathopod 1. It is interesting to note that the female MV J14615 has the right gnathopod 1 extended and rotated between merus and carpus so that the propodus is inverted as in species of Trischizostoma which are parasitic on fishes. The left gnathopod 1 is tucked in under the coxae and is not inverted. Distribution . South-eastern Australia ; 400–500 m depth.