Amaryllis kamata, 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 : 147-150

Amaryllis kamata n.sp.

Figs. 14–16

Amaryllis macrophthalma . Stebbing, 1910a: 569 (in part).

Type material. HOLOTYPE, female, 9.2 mm, ovigerous (14 eggs), AM P 37107; 1 PARATYPE, male, 6.2 mm, AM P 37108 ; 44 PARATYPES, AM P 37109 ; E of Long Reef , NSW, Australia, 33°46'S 151°43'E, dredged, 176 m, 5 December 1977, FRV Kapala , stn K77-23 - 01 .

Additional material. NEW SOUTH WALES: 11 specimens, AM P2468 , 6.5–10.5 km off Manning River , [approx. 31°57'S 152°46'E], 40 m, fine grey sand, trawl, 5 March 1898, HMCS Thetis, stn 28. 10 specimens, AM P 37110 , E of Newcastle, 32°53'S 152°35'E, 165 m, 15 August 1985, FRV Kapala , stn K85-12 - 23 . 28 specimens, AM P 59045 , NE of Broken Bay , 33°22'S 152°04'E to 33°24'S 152°04'E, 181– 112 m, benthic trawl, 11 February 1986, FRV Kapala stn K86-01 - 04 . 1 specimen, AM P 37111 , NE of Broken Bay , 33°29'S 152°06'E to 33°30'S 152°04'E, 492–523 m, trawl, 11 February 1986, FRV Kapala , stn K86-01 - 05 . 2 specimens, AM P 37395 , SE of Broken Bay , 33°36'S 151°30'E to 33°37'S 151°29'E, 71– 75 m, 10 February 1986, FRV Kapala , stn K86-01 - 02 . 1 specimen, P 37112 , NE of Long Reef Point , 33°41'S 151°53'E, 366 m, 5 December 1977, FRV Kapala , stn K77-23 - 03 . 114 specimens, AM P 37113 , E of Long Reef Point , 33°43'S 151°46'E to 33°44'S 151°56'E, 174 m, 20 December 1985, FRV Kapala , stn K85-21 - 08 . 10 specimens, AM P 37114 , E of Bondi , 33°52'S 151°23'E, 80 m, 11 December 1980, FRV Kapala , stn K80-20 - 11 . 2 specimens, AM P2469 , 8 – 9.5 km off Coogee, [approx. 33°57'S 151°21.5'E], 90–91 m, fine sand, trawl, E. R . Waite, 15 March 1898, HMCS Thetis, stn 44. 1 specimen, AM P 58759 , Cape Banks, 34°00'S 151°16'E, 45–50 m, The Ecology Lab, November 1990, stn S2 T3 . 2 specimens, AM P5427 , 4– 6 km E of Botany Bay , [approx. 34°01'S 151°19'E], 60–102 m, trawl, F. A . McNeill & A . Livingstone, August 1921, ST Goonambee. 26 specimens, AM P2466 , 2– 3 km off Port Hacking , [approx. 34°03.5'S 151°12.5'E], 40–69 m, sandy, trawl, E. R . Waite, 10 March 1898, HMCS Thetis, stn 35. 34 specimens, AM P2464 and 10 specimens, AM P2465 , 3– 4 km off Botany Bay , [approx. 34°05'S 151°15'E], 91–95 m, mud, trawl, E. R . Waite, 11 March 1898, HMCS

east of Long Reef, NSW. Scales for A 1, 2 represent 0.1 mm; remainder represent 0.05 mm.

Thetis, stn 37. 64 specimens, AM P2467 , 5.5–6.5 km off Wata Mooli [now Wattamolla], [approx. 34°10'S 151°11'E], 108– 99 m, mud, trawl, E. R. Waite, 22 March 1898, HMCS Thetis, stn 57. 1 specimen, AM P 37115, NE of Montague Island, 35°58'S 150°30'E to 36°03'S 150°27'E, 384 m, 21 November 1979, FRV Kapala , stn K79-18 - 07 . BASS STRAIT: 7 specimens, AM P 58116, eastern Bass Strait, 38°56.5'S 148°19.3'E, 80– 85 m, benthic sled, P. B. Berents, 27 August 1994, FRV Southern Surveyor , stn 05/94/59. 6 specimens, AM P 58117, eastern Bass Strait , 38°59.1'S 148°31.6'E, 125 m, benthic sled, P. B. Berents , 27 August 1994, FRV Southern Surveyor , stn 05/94/60. TASMANIA: 1 specimen, AM E6526 , Tasmanian coast, FIS Endeavour Collection .

Type locality. East of Long Reef , NSW, Australia, 33°46'S 151°43'E, 176 m depth .

Description. Based on holotype female, 9.2 mm, AM P37107. 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 moderate midanterior angle with small depression above angle (lateral view). Mandible lacinia mobilis a stemmed, distally-cusped blade; accessory setal row with intermediate setae; palp article 2 with 2 posterodistal setae, article 3 without A3- 150 Records of the Australian Museum (2002) Vol. 54 seta. Maxilliped outer plate with distal margin smooth, medial margin without notch.

Gnathopod 1 carpus subequal in length to propodus (0.9×); propodus, posterior margin without robust setae. Gnathopod 2 palm slightly acute, with 1 lateral robust seta, 1 medial robust seta. 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 rounded posteriorly, posteroventral corner rounded, posteroventral margin straight.

Epimeron 3 posterior margin smooth, with notch well above rounded posteroventral corner. Uropod 1 peduncle dorsolateral margin with 8 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 43%).

Male (sexually dimorphic characters). Based on paratype male, 6.2 mm, AM P 37108.Antenna 1 flagellum with callynophore, with calceoli. Antenna 2 flagellum with calceoli. Mandible palp article 2 with 9 posterodistal setae. Gnathopod 2 palm with no lateral robust setae and 1 medial robust seta .

Etymology. The specific name is contrived and has no special meaning.

Remarks. Amaryllis kamata belongs to the group of species with a smooth posterior margin on epimeron 3 and a rounded posteroventral corner on the basis of pereopod 7. Within this group it is most similar to A. brevicornis but differs in the shape of the epistome/upper lip and the length of the gnathopod 1 carpus.

Habitat. Amaryllis kamata is known from sand and mud bottoms off the New South Wales coast. It is the deepestoccurring species (50 to 525 m depth) of Amaryllis known from Australian waters.

Distribution. Southeastern Australia; 40–523 m depth.