Bamarooka tropicalis Lowry & Stoddart, 2002

Lowry, J. K. & Stoddart, H. E., 2009, Amaryllididae *, Zootaxa 2260 (1), pp. 128-131: 128-131

publication ID 10.11646/zootaxa.2260.1.5


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Bamarooka tropicalis Lowry & Stoddart, 2002


Bamarooka tropicalis Lowry & Stoddart, 2002  

( Figs 1 View FIGURE 1 , 2 View FIGURE 2 , Pl. 1A)

Bamarooka tropicalis Lowry & Stoddart, 2002: 192   View Cited Treatment , figs 58–60. –– Lowry & Stoddart, 2003: 44.

Type locality. North-west of Port Hedland, North West Shelf, Western Australia, eastern Indian Ocean (19°29'S 118°52'E) GoogleMaps   .

Material examined. 1 unsexed, AM P37094 View Materials (JML 17-10-2); 1 unsexed, AM P37095 View Materials (JML 81-26-11-4); 1 unsexed, AM P37092 View Materials (QLD 21); 4 unsexed, AM P37093 View Materials (QLD 27/28); 1 unsexed, AM P70987 View Materials , 1 unsexed, AM P71010 View Materials , 3 unsexed, AM P71143 View Materials and 1 male, 4.0 mm, AM P78940 View Materials (QLD 1707); 2 unsexed, AM P71114 View Materials (QLD 1710); 3 unsexed, AM P78499 View Materials (QLD 1852); 2 unsexed, AM P78498 View Materials (QLD 1869); 1 unsexed, AM P78497 View Materials (QLD 1893); 1 unsexed, AM P75656 View Materials (QLD 1918); 1 unsexed, AM P75655 View Materials (QLD 1920)   .

Description. Based on male, 4.0 mm, AM P78940 View Materials .

Head. Head much deeper than long, anterior margin with notch extended into a slit; rostrum absent; eye elongate, reniform. Antenna 1 peduncular article 1 not ball-shaped proximally, distal margin with small medial spine; peduncular article 2 medium length; flagellum with weak 1-field callynophore, calceoli absent. Antenna 2 flagellum about as long as that of antenna 1, with calceoli on proximal articles. Mouthpart bundle subconical. Epistome/upper lip almost straight in lateral view. Mandible lacinia mobilis a stemmed, distallycusped blade; accessory setal row with intermediate setae; palp article 2 with 1 posterodistal seta, article 3 without A3-setae. Maxilliped outer plate with distal margin smooth, medial margin without notch.

Pereon. Gnathopod 1 carpus shorter than (0.8 x) propodus; propodus, posterior margin without robust setae. Gnathopod 2 palm slightly acute, with no lateral robust setae, 1 medial robust seta. Pereopods 3 and 4 merus and carpus without setal fringe. Pereopod 4 coxa with anterior margin slightly obtuse, posterior margin rounded, anteroventral corner rounded. Pereopods 5–7 with distal articles elongate, dactyli short and stocky. Pereopod 5 basis expanded posteriorly, rounded with sloping posteroproximal shoulder. Pereopod 7 basis rounded posteriorly, posteroventral corner rounded, posteroventral margin straight.

Pleon. Epimeron 3 posterior margin smooth, with notch well above rounded posteroventral corner. Uropod 1 peduncle dorsolateral margin with 3 robust setae. Uropod 2 inner ramus slightly constricted. Uropod 3 rami lanceolate; without plumose setae; outer ramus 1-articulate. Telson   moderately cleft (about 36%).

Female (sexually dimorphic characters). Antenna 1 flagellum without callynophore. Mandible palp article 2 without posterodistal seta.

Habitat. Bamarooka tropicalis   has been found with algae, seagrasses, sediments, ascidians, bryozoans and hydroids, but most commonly among corals and coral rubble in 3–40 m depth.

Remarks. Bamarooka tropicalis   is a widespread species in tropical Australia. It is currently the only species of Bamarooka   known from the GBR. It can be separated from other GBR lysianassoids by its elongate head. Bamarooka anomala   and B. tropicalis   are the only species in the genus with elongate, reniform eyes. They are easily distinguished from each other by their fifth pereopods, which have a linear basis in B. anomala   and an expanded basis in B. tropicalis   .

The shape of pereopod 7 basis is slightly variable within the species. In populations from the North West Shelf the posteroventral margin is almost always rounded; in east coast populations it varies from rounded to almost straight (as in illustrated specimen).

Distribution. Australia. Queensland: Northwest Islet, Hammond Island and Goodes Island, Torres Strait (current study); Lizard Island ( Lowry & Stoddart 2002, current study). Western Australia: North West Shelf ( Lowry & Stoddart 2002). Northern Territory: Darwin, New Year Island, McCluer Island ( Lowry & Stoddart 2002).


Australian Museum














Bamarooka tropicalis Lowry & Stoddart, 2002

Lowry, J. K. & Stoddart, H. E. 2009

Bamarooka tropicalis

Lowry, J. K. & Stoddart, H. E. 2003: 44
Lowry, J. K. & Stoddart, H. E. 2002: 192