Normanion whoi, Stoddart & Lowry, 2010

Stoddart, H. E. & Lowry, J. K., 2010, The family Opisidae (Crustacea: Amphipoda: Lysianassoidea) in Australasian waters, Zootaxa 2479 (1), pp. 22-38 : 27-28

publication ID 10.11646/zootaxa.2634.1.5


persistent identifier

treatment provided by


scientific name

Normanion whoi

sp. nov.

Normanion whoi sp. nov.

( Figs 3, 4)

Type material. HOLOTYPE, female, 3.2 mm, MV J61508 View Materials , 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 GoogleMaps . PARATYPES: 1 female, MV J14615 View Materials and 2 females, AM P.81162, same data as holotype GoogleMaps ; 1 female, MV J61509 View Materials , 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 GoogleMaps .

Type locality. South of Point Hicks , Victoria, Australia, 38°17.70'S 149°11.30'E, 400 m depth GoogleMaps .

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 View Materials 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.


University of Montana Museum


Woods Hole Oceanographic Institution


Collection of Leptospira Strains


Australian Museum