Amaryllis moona, 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: 160-163

publication ID

2201-4349

persistent identifier

http://treatment.plazi.org/id/783187C3-FFDA-FFBF-18D4-F6439549FC1E

treatment provided by

Felipe

scientific name

Amaryllis moona
status

n.sp.

Amaryllis moona   n.sp.

Figs. 26, 27

Type material. HOLOTYPE, female, 8.2 mm, AM P 37243 View Materials ; 2   PARATYPES, male, AM P 37371 View Materials ; Summercloud Bay , Wreck Bay, New South Wales, Australia, 35°10'S 150°42'E, 9–15 m, sponges, ascidians and algal holdfasts on underside of rocks GoogleMaps   , P. Hutchings , 29 November 1971, stn NSW-228. 1   PARATYPE, male, 4.8 mm, AM P 37372 View Materials , off Moona Moona Creek , Jervis Bay   , NSW, Australia, Tasman Sea, 35°03.5'S 150°41'E, 8 m, algae and sponge on sandy rocks and mussels GoogleMaps   , J. K. Lowry, 19 June 1982, stn NSW-113   .

Type locality. Summercloud Bay , Wreck Bay, NSW, Australia, 35°10'S 150°42'E, 9–15 m depth GoogleMaps   .

Description. Based on holotype female, 8.2 mm, AM P37243 View Materials . 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 almost straight (lateral view). Mandible lacinia mobilis a stemmed cuplike blade; accessory setal row without intermediate setae; palp article 2 with 1 posterodistal seta, article 3 without A3-seta. Maxilliped outer plate with distal margin serrate, medial margin without notch.

Gnathopod 1 carpus longer than propodus (1.2×); propodus, posterior margin without robust setae. Gnathopod 2 palm slightly   acute, without lateral robust setae, 1 medial robust seta. Pereopods 3 and 4 merus and carpus without 2, P3–7 represent 0.5 mm; remainder represent 0.1 mm.

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 curved.

Epimeron 3 posterior margin smooth, with notch well above rounded posteroventral corner. Uropod 1 peduncle dorsolateral margin with 7 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 34%).

Male (sexually dimorphic characters). Based on paratype male, 4.8 mm, AM P 37372 View Materials . Antenna 1 flagellum with callynophore. Antenna 2 flagellum with calceoli. Mandible palp article 2 with 7 posterodistal setae   .

Etymology. Named for Moona Moona Creek.

Remarks. Amaryllis moona   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 similar to A. brevicornis   in having a nearly straight upper lip, but A. moona   has significantly less robust setae at the corner of the palm of gnathopod 2 than does A. brevicornis   . Amaryllis moona   and A. quokka   are the only two Amaryllis species   with a cup-shaped lacinia mobilis; A. moona   can be distinguished from A. quokka   by the serrate distomedial margin of the maxilliped outer plate and the slightly acute palm on gnathopod 2.

Habitat. Amaryllis moona   has been found only rarely, among mixed algae and sedentary invertebrates.

Distribution. Known only from the Jervis Bay area on the southeast coast of Australia; 8–15 m depth.

AM

Australian Museum

P

Museum National d' Histoire Naturelle, Paris (MNHN) - Vascular Plants

NSW

Royal Botanic Gardens, National Herbarium of New South Wales

J

University of the Witwatersrand

K

Royal Botanic Gardens