Microdeuteropus (sic) australis Haswell, 1879: 271 Microdeutopus australis Haswell, 1882: 263 Lemboides australis Stebbing, 1899: 350 Stebbing, 1906: 601 Bemlos australis Myers, 1988a: 188 Myers, 1988b: 278 Lowry & Stoddart, 2003: 67 Aoridae * Myers, Alan A. Zootaxa 2009 2009-10-08 2260 1 220 278 LGVM (Haswell, 1879) Haswell 1879 [151,551,1079,1105] Malacostraca Aoridae Bemlos Animalia Amphipoda 11 231 Arthropoda species australis  ( Figs 9, 10)      Microdeuteropus(sic) australis Haswell, 1879: 271, pl. 11, fig. 5.    Microdeutopus australis. —  Haswell, 1882: 263.    Lemboides australis. —  Stebbing, 1899: 350. —  Stebbing, 1906: 601.    Bemlos australis. —  Myers, 1988a: 188. —  Myers, 1988b: 278, figs 11–13. —  Lowry & Stoddart, 2003: 67(catalogue).   Material examined.  1 male, AMP70599 (QLD 1622);  2 males, 4 females, AMP70751 (QLD 1645);  1 male, 1 female, AMP70841 (QLD 1666);  1 male, 1 female, AMP70912 (QLD 1672),  1 male, AMP70934 (QLD 1688);  1 male, 1 female, AMP71335 (QLD 1778); 7 unsexed, AMP75576 (QLD 1900); many unsexed, AMP75577 (QLD 1922).    Typelocality. Port Jackson, New South Wales, Australia(~ 33°52'S 151°13'E).   Description.Based on male, 4.0 mm, AM P70751.  Head. Headlateral cephalic lobes apically truncate. Antenna 1flagellum with 20 or less articles; accessory flagellum multiarticulate. Antenna 2with few long setae. Lower lipwith fine setae and stout setae. Maxilla 1inner plate with 1 long pectinate apical seta. Mandible, palp article 3 longer than 2, posterior margin straight, with setae of two distinct lengths, long setae and an under-story of much shorter regularly spaced setae.  Pereon. Pereoniteswithout sternal spines. Gnathopod 1enlarged in males only; coxa weakly produced anterodistally, rounded; basis robust, twice as long as broad, posterodistal margin with one long seta; ischium anterior margin without flange, posterior margin with few setae; merus not greatly elongated, fused along its entire length with carpus, posterior margin with few setae without posterodistal spine; carpus one and one half length of propodus, with few setae, anterior margin with no spine, without an oblique row of long setae on inner face, posterior margin without spines; propodus anterior margin moderately setiferous, posterior margin straight, palm delimited from posterior margin, margin forming a broad excavate sinus, palm defined by strong posterodistal spine, without robust seta defining palm, with spine near base of dactylus, with subtriangular, apically subacute spine; dactylus less than half length of propodus, overlapping palm. Gnathopod 2subchelate; basis anterodistal margin with flange, posterodistal margin without robust setae; with few setae along length of basis; carpus and propodus subequal in length, with short sparse setae; propodus with short dense setae, without robust seta or spine defining palm. Pereopod 3without brush of long setae on merus. Pereopod 6basis not produced posterodistally. Pereopod 7more than 125% length of pereopod 6.   FIGURE 9.  Bemlos australis( Haswell, 1879), male, 4.0 mm, AM P70912, Cobia Hole, Lizard Island, Great Barrier Reef.  Pleon. Epimeron 3posterodistal margin rounded. Uropod 1rami subequal, peduncle much longer than broad, distoventral spine shorter than peduncle. Uropod 2biramous; peduncle with distoventral spine equal in length with peduncle. Uropod 3biramous, rami subequal, inner ramus less than twice length of peduncle.  Telsonwith distal fine setae only.  Female(sexually dimorphic characters). Based on female, 4.2 mm, AM P70751. Gnathopod 1carpus subequal in length with propodus; propodus palm defined by rounded corner, with robust seta defining palm; dactylus much more than half length of propodus. Gnathopod 2carpus shorter than propodus; propodus with robust seta defining palm.  Habitat.Among  Posidonia,algae, in coral rubble, fine sands, on a breakwater.   Remarks.This species resembles  B. triangulum Myers, 1988b, in male gnathopod 1 having the carpus longer than the propodus. It differs from that species however in its larger size, male gnathopod 1 with nonacute coxa, and uropod 2 with well developed distoventral spine.   Distribution.  Australia. Queensland: Lizard Island ( Myers 1988b; current study). New South Wales: Port Jackson ( Haswell 1879), Twofold Bay ( Myers 1988b). P70599 [402,795,1358,1384] AM 11 231 1 1 P70751 [806,1338,1358,1384] AM 11 231 6 4 2 P70841 AM 11 231 2 1 1 P70912 [586,1104,1397,1423] AM 11 231 2 1 1 P70934 AM 11 231 1 1 P71335, P75576, P75577 AM 11 231 2 1 1 [198,1119,1512,1539] Australia -33.866665 Port Jackson 1202 151.21666 11 231 1 New South Wales holotype