Siphonoecetini Just, 1983 (Crustacea, Amphipoda, Ischyroceridae) 13: Western Australian species of Bubocorophiina in Rhinoecetes, Cephaloecetes, Sinoecetes, Borneoecetes and Pararhinoecetes gen. nov. Just, Jean Zootaxa 2019 2019-02-08 4554 1 101 140 7ZL3Q Just, 2019 Just 2019 [151,391,476,502] Malacostraca Ischyroceridae Rhinoecetes GBIF Animalia Amphipoda 25 126 Arthropoda species setosus sp. nov.   Figures 17–18   Type fixation. Holotype, male, here designated.   Etymology.The species is named for the densely setose articles 4 and 5 of antenna 2 inadult males.   Material examined.   Holotype. ♂, 3.0 mm. Western Australia, Cape Range National Park, inside Ningaloo Reefoff Ned’s Camp, 21°59.5’S 113°54.5’E,  2 m, sand, J.K. Lowry, stn WA-347,  1 January 1984, AMP35077.    Paratypes. Samesample as holotype, AM P 101865(> 100 specimens).  Samesample as holotype, WAMC73464 (7, ♂and ♀).  Samesample as holotype, NHMD-233160 ( 8 specimens).  Western Australia, Cape Range National Park, inside Ningaloo Reefoff Ned’s Camp, 21°59.5’S 113°54’E,  2 m, small brown algae, R.T. Springthorpe,  1 January 1984, AMP34976 (2 small specimens). Western Australia, Cape Range National Park, inside Ningaloo Reefoff Ned’s Camp, 21°59.5’S 113°54.5’E, airlift, R.T. Springthorpe,  1 January 1984, AMP34977 (ca. 60 specimens).  Western Australia, Cape Range National Park, channel in Ningaloo Reefoff Ned’s Camp, 21°59’S 113°54.5’E,  6 m, rock scrapings, filamentous algae, sand, strong surge, J.K. Lowry, stn WA-325,  31 December 1983, AMP35075 (1 small specimen).   Description( holotype, ♂). Headas long as pereonites 1 and 2 combined along dorsal midline; mid-anterior depression moderately deep, encompassing approximately 0.5 head length. Rostrumstraight, acutely pointed, in dorsal view reaching beyond apices of eye lobes nearly entire length. Front margin lateral to rostrum with moderately overhanging ‘brows’. Eye lobesbroadly rounded in lateral view, with angular lower anterior corner; lower distal margin with a few simple setae.  Antenna 1approximately as long as head and pereonites 1–5 combined, reaching to proximal 0.25 of antenna 2 peduncle article 5; flagellum of 6+ articles, as long as peduncle articles 1–2 and half of 3 combined, peduncle article 1 medial and lateral margins parallel in dorsal view. Antenna 2approximately as long as head, all pereonites, and pleonites 1–3 combined; ventral projection of peduncle article 2 approximately as long as broad at base, tapering to rounded apex, with fringe of long simple setae laterally and apically; peduncle articles 4–5 with about 10 and 14 ventral tufts of long, simple densely set, somewhat curling setae; article 5 length about 0.9 of article 4; flagellum articles 1 and 2 with several slender robust setae.  Mouthparts,mandible palp article 1 with 2 medial, 3 ventral and 4 apical long setae; vestigial article 2 at center of article 1 apex.  Gnathopod 1propodus length 3.0 width, with 2 mid-posterior robust setae. Gnathopod 2propodus length 2.0 greatest width. Pereopods 3–4basis with scattered long and short setae along anterior margin, row of long setae in distal half of posterior margin; merus with single mid-anterior and anterodistal group of long setae, with row of medium length setae along distal half of posterior margin. Pereopods 5–6basis anterior margin with row of long setae in distal half, posterior margin with single short seta in distal half.  Uropod1 peduncle dorsolaterally with row of 2–3 robust setae, tuft of curved setae distally, ventral apical margin with corona of strong denticles; outer ramus approximately 0.6 length of peduncle, lateral margin with 3–4 robust setae, single simple seta mid-dorsally; inner ramus 0.8 length of outer ramus, straight. Uropod 2peduncle approximately half length of peduncle of uropod 1, with finely fimbriate corona, reaching to uropod 3 ramus; ramus 0.3 length of peduncle, almost entirely reaching beyond uropod 3 ramus. Uropod 3peduncle with rounded median projection carrying a few simple setae apically; ramus with 2–3 long simple setae.  Telsonwidth approximately 1.2 length, apex nearly straight.  Female.Much less setose than male, especially antennae. Uropods 1 with more robust setae on peduncle and outer ramus. Sternal papillae about twice as long as wide at base, forward curved with blunt apex.   FIGURE 17.  Rhinoecetes setosus  sp. nov.Holotype, ♂, except F, paratype, ♀. a2 flag, antenna 2 flagellum; cdv, cephalon dorsal view; clv, cephalon lateral view; md plp, mandible palp; vp, antenna 2 article 2 ventral projection. Scale for habitus and F: 1 mm.  Size.Largest ♂, 3.0 mm; largest ♀, 3.0 mm.  Colour and biology.No observations.   Distribution. Western Australia, Ningaloo at Cape Range,  2 m.   Remarks.  Rhinoecetes setosus  sp. nov.shares with  R. caetus  sp. nov.(above) 2–3 robust setae on uropod 1 peduncle and a distoventral corona with small denticles. It differs from  R. caetusby its straight rather than curved rostrum, the longer uropod 2 ramus reaching beyond uropod 3 ramus, and the much more setose male antenna 2. 2234227509 1984-01-01 AM J. K. Lowry Cape Range National Park 2 -21.991667 Ned's Camp 125 113.90833 Ningaloo Reef 25 126 1 1 Western Australia holotype 2234227550 [199,1036,726,751] AM Same 25 126 P101865 100 paratype 2234227429 WAM Same 25 126 2 1 1 holotype 2234227542 [413,1068,762,787] Same 25 126 8 holotype 2234227576 1984-01-01 AM R. T. Springthorpe & Ningaloo Reef & Ned's Camp Cape Range National Park 2 -21.991667 Ned's Camp 125 113.90833 Ningaloo Reef 25 126 60 Western Australia paratype 2234227524 1983-12-31 AM J. K. Lowry Cape Range National Park 6 -21.983334 Ned's Camp 929 113.90833 Ningaloo Reef 25 126 1 Western Australia paratype