Amaryllis quokka, 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: 169-172

publication ID

2201-4349

persistent identifier

http://treatment.plazi.org/id/783187C3-FFED-FFB6-18FF-F5A092A4F9E7

treatment provided by

Felipe

scientific name

Amaryllis quokka
status

n.sp.

Amaryllis quokka   n.sp.

Figs. 35–37

Type material. HOLOTYPE, female, 13.4 mm, ovigerous, AM P 37373 View Materials ; 1   PARATYPE, male, 8.0 mm, AM P 37374 View Materials ; Cathedral Rock, Rottnest Island, Western Australia, eastern Indian Ocean , 32°01.5'S 115°27'E, 3 m, orange tunicates under limestone rock overhangs GoogleMaps   , J. K. Lowry , 21 December 1983, stn WA-247   .

Additional material. SOUTH AUSTRALIA: 10 specimens, AM P 57867 View Materials , Blanche Harbour, Spencer Gulf, [approx. 32°42'S 137°46'E], 9 m, K. Sheard , 8 March 1938 GoogleMaps   , FL Whyalla. 7 specimens, AM P 57868 View Materials , behind Lowly Point, Spencer Gulf, [approx. 33°S 137°46'E], 18 m, K. Sheard , 7 March 1938 GoogleMaps   , FL Whyalla. 1 specimen, SAMA C5985, Dangerous Reef, Spencer Gulf, [approx. 34°49'S 136°12'E], dredged, K. Sheard GoogleMaps   . 1 specimen, AM P 57869 View Materials , Nepean Bay, Kangaroo Island, 35°42'S 137°37'E, dredged, F. Moorhouse , May 1938 GoogleMaps   . 1 specimen, SAMA C5986, Nepean Bay, Kangaroo Island, [approx. 35°42'S 137°37'E], dredged, F. Moorhouse , 7–9 May 1938 GoogleMaps   . 3 specimens, AM P 57870 View Materials , Gulf St Vincent, Fulton , 1902   . WESTERN AUSTRALIA: 2 specimens, NMV J 13980 View Materials , N side of Cape Riche, 34°37'S 118°47'E, 6 m, sponges on vertical rock face, G. C. B. Poore & H. M. Lew Ton , 14 April 1985 GoogleMaps   , stn SWA-47. 1 specimen, NMV J 13981 View Materials , N end of Little Beach, Two Peoples Bay, 34°58.4'S 118°11.7'E, 6 m, tufted algae on boulders, G. C. B. Poore & H. M. Lew Ton , 5 April 1985 GoogleMaps   , stn SWA-11. 1 specimen, AM P 37375 View Materials , Vancouver Peninsula, near Mistaken Island, King George Sound , 35°04'S 117°56'E, 2 m, sponges, J. K. Lowry , 13 December 1983 GoogleMaps   , stn WA-103. 10 specimens, AM P 37376 View Materials , off Possession Point, King George Sound, 35°02'S 117°55'E, 7 m, brown algae, bryozoans and sponge, R. Springthorpe & J. K. Lowry , 14 December 1983 GoogleMaps   , stn WA-133. 9 specimens, AM P 37377 View Materials , same locality, 7 m, mixed sponges and algae, J. K. Lowry , 14 December 1983 GoogleMaps   , stn WA-135.

Type locality. Cathedral Rock , Rottnest Island, Western  

Australia, eastern Indian Ocean , 32°01.5'S 115°27'E, 3 m depth GoogleMaps   .

Description. Based on holotype female, 13.4 mm, AM P37373 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 with callynophore (vestigial), calceoli absent. Antenna 2 flagellum about as long as that of antenna 1, without calceoli. Mouthpart bundle subconical. Epistome/upper lip with broad mid-anterior bulge (lateral view). Mandible lacinia mobilis a stemmed, cup-like blade; accessory setal row with intermediate setae; palp article 2 with 3 posterodistal setae, article 3 without A3-seta. Maxilliped outer plate with distal margin smooth, medial margin without notch.

Gnathopod 1 carpus subequal in length to propodus; propodus, posterior margin without robust setae. Gnathopod 2 palm transverse, without lateral robust setae, with 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 curved.

Epimeron 3 posterior margin smooth, with notch well above rounded posteroventral corner. Uropod 1 peduncle dorsolateral margin with 9 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 46%).

Male (sexually dimorphic characters). Based on paratype male, 8.0 mm, AM P37374 View Materials . Antenna 1 flagellum with callynophore. Mandible palp article 2 with 11 posterodistal setae.

Etymology. The species name quokka   is a reference to the small marsupials that inhabit Rottnest Island.

Remarks. Amaryllis quokka   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 ( A. brevicornis   , A. kamata   , A. moona   , A. olinda   ). Within this group it differs from all other species in the transverse palm of gnathopod 2.

Habitat. Amaryllis quokka   has been collected on sedentary invertebrates, most often sponges.

Distribution. Southern and southwestern Australia, from the South Australian Gulfs to Rottnest Island; 3–18 m depth.

AM

Australian Museum

P

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

J

University of the Witwatersrand

K

Royal Botanic Gardens

SAMA

South Australia Museum

F

Field Museum of Natural History, Botany Department

NMV

Museum Victoria

N

Nanjing University

G

Conservatoire et Jardin botaniques de la Ville de Genève

C

University of Copenhagen

B

Botanischer Garten und Botanisches Museum Berlin-Dahlem, Zentraleinrichtung der Freien Universitaet

H

University of Helsinki

M

Botanische Staatssammlung München

R

Departamento de Geologia, Universidad de Chile