Amaryllis keablei, Lowry & Stoddart, 2002

Lowry, J. K. & Stoddart, H. E., 2002, The Amaryllididae of Australia (Crustacea: Amphipoda: Lysianassoidea), Records of the Australian Museum 54, pp. 129-214 : 150-152

Amaryllis keablei n.sp.

Figs. 17–19

Amaryllis macrophthalma .– Chilton, 1921: 55 (in part).–J.L.

Barnard, 1972: 262, fig. 156 (in part, figs. of female “n”). Amaryllis sp. 1 .– Hutchings et al., 1989: 362.

Type material. HOLOTYPE, female, 20.5 mm, ovigerous (23 eggs), NMV J3765 , 23 km east of Cape Rochon , Three Hummock Island , central Bass Strait , Tasmania, Australia, 40°22.2'S 145°17'E, 40 m, sand, epibenthic sled, M. Gomon & G. C. B. Poore, 3 November 1980, FRV Sarda , stn BSS 112. 3 PARATYPES, female, NMV J 13946 ; 3 PARATYPES, female, AM P 37100 ; 9 km SSW of Cape Adansan, Three Hummock Island , central Bass Strait, Tasmania, Australia, 40°30.9'S 144°56'E, 27 m, very coarse sand, epibenthic sled , M. Gomon & G. C. B. Poore , 2 November 1980, FRV Sarda , stn BSS 109 .

Additional material. NEW SOUTH WALES: 1 specimen, NMV J 13947 , Port Stephens, [approx. 32°42'S 152°06'E], O. A. Sayce Collection. 2 specimens, AM P 37101, Port Jackson. 1 specimen, AM P 37180, Port Jackson [was part of Amaryllis brevicornis syntype series, AM G5417 ]. 2 specimens, AM P 36700, Quarantine Bay side of Murrumbulga Point , Twofold Bay , 37°04.7'S 149°53.1'E, 3 m, subtidal breakwater wall, S. Keable & P. Hutchings , 17 September 1985, stn FIRTA Q9 - Q11 . 1 male (illustrated), AM P 37102, Munganno Point, Twofold Bay , 37°06.2'S 149°55.7'E, 7 m, sublittoral rock platform, P. Hutchings, 10 October 1984, stn FIRTA M3 . VICTORIA: 2 females, NMV J 13948 , Crawfish Rock, Western Port, 14 m. 4 specimens, NMV J 13949 , Western Port. 2 females, NMV J3789 , Western Port , 28 April 1968, stn D/1/11. 1 specimen, NMV J 13950 , Crib Point , Western Port , 38°20.83'S 145°13.49'E, 13 m, sandy gravel, 23 March 1965, stn CPBS 32N. 3 females, NMV J3241 , Port Phillip Bay , stn 25. 1 ovigerous female, NMV J 13951 , Port Phillip Bay , stn 26. 1 female, NMV J3262 , mouth of Werribee River to centre of Bay, Port Phillip Bay , W. Williams, 20 March 1963, stn 25, area 9 to 19. 1 specimen, AM P 38945, Ricketts Point, Port Phillip Bay , [approx. 37°58'S 144°54'E], 2 m, rock shelf, N. Coleman, 21 June 1979, AMPI Crust No. 899. BASS STRAIT: 1 specimen, NMV J 13952 , 33 km S of Deal Island , Tasmania, Central Bass Strait , 39°47.3'S 147°19.3'E, 60 m, muddy sand, epibenthic sled, R. Wilson, 14 November 1981, RV Tangaroa , stn BSS-161 . TASMANIA: 1 specimen, AM P 37103, Derwent Estuary, D’Entrecasteaux Channel , March 1940, Tasmanian Biological Survey, Fisheries Department, stn OL81 . 1 specimen, AM P5913 , Tasmanian Coast, FIS Endeavour . SOUTH AUSTRALIA: 1 specimen, SAMA C5980 , Dangerous Reef, Spencer Gulf, [approx. 34°49'S 136°12'E], dredged, K. Sheard. 1 specimen, NMV J 13953 , The Hotspot Reef , W of Flinders Island , 33°40.8'S 134°22.5'E, 21 m, erect hard bryozoan on vertical rock face, G. C. B. Poore , 20 April 1985, stn NMV SA-71 . 2 females, AM P 37104, Marino, Gulf St Vincent, [approx. 35°03'S 138°30'E], W. H. Baker, 1910. 1 specimen, AM P 37105, Port Adelaide , Gulf St Vincent, [approx. 34°50'S 138°30'E], H. M. Hale, 1924. 1 female, AM P 37106, 19 km from Mount Young toward Wallaroo, Spencer Gulf, [approx. 33°18'S 137°31'E], 18 m, K. Sheard, 8 March 1938, FL Whyalla .

Type locality. 23 km east of Cape Rochon , Three Hummock Island, central Bass Strait, Tasmania, Australia, 40°22.2'S 145°17'E, 40 m depth .

Description. Based on holotype female, 20.5 mm, NMV J3765. Head much deeper than long, anterior margin with notch extended into a slit; rostrum absent; eye present, elongate, reniform. Antenna 1 peduncular article 1 not ballshaped proximally, distal margin with small medial spine; peduncular article 2 medium length; flagellum without callynophore, calceoli absent. Antenna 2 flagellum about as long as that of antenna 1, without calceoli. Mouthpart bundle subconical. Epistome/upper lip with strong midanterior angle (lateral view). Mandible lacinia mobilis a stemmed, distally-cusped blade; accessory setal row with intermediate setae; palp article 2 without posterodistal setae, article 3 without A3-seta. Maxilliped outer plate with distal margin smooth, medial margin deeply notched.

Gnathopod 1 carpus subequal in length to propodus; propodus, posterior margin without robust setae. Gnathopod 152 Records of the Australian Museum (2002) Vol. 54 2 palm slightly acute, with 3–4 lateral robust setae, 4 medial robust setae. Pereopods 3 and 4 merus and carpus without setal fringe. Pereopod 4 coxa with anterior and posterior margins subparallel, anteroventral corner rounded. Pereopods 5–7 with distal articles elongate, dactyls short and stocky. Pereopod 5 basis expanded posteriorly, rounded. Pereopod 7 basis subrectangular, posteroventral corner subquadrate, posteroventral margin straight.

Epimeron 3 posterior margin serrate, without notch. Uropod 1 peduncle dorsolateral margin with 17 robust setae; outer ramus without large spines between robust setae. Uropod 2 inner ramus slightly constricted. Uropod 3 rami lanceolate; without plumose setae; outer ramus 1-articulate. Telson moderately cleft (about 37%).

Male (sexually dimorphic characters). Based on male, 5.8 mm, AM P37102 (probably not fully mature). Antenna 1 flagellum with callynophore. Antenna 2 flagellum with calceoli. Mandible palp article 2 with 3 posterodistal setae.

Etymology. Named for Stephen Keable in recognition and appreciation of his meticulous work in producing illustrations of amphipods.

Remarks. Amaryllis keablei is similar to other Amaryllis species with a serrate posterior margin on epimeron 3, such as A. carrascoi , A. croca , A. dianae and A. migo . It is most similar to A. croca in that the serrations extend to the posteroventral corner. Amaryllis keablei differs from A. croca in having a strong mid-anterior angle on the epistome/ upper lip, a small medial spine on pedunclar article 1 of antenna 1, no posterodistal setae on mandibular palp article 2 of the female and 3 to 4 lateral robust setae on the palm of female gnathopod 2.

Distribution. Southeastern and southern Australia, from Port Stephens on the east coast to the South Australian Gulfs; 2–60 m depth.