Podocerus hanapepe J. L. Barnard 1970

Hughes, L. E., 2013, Podoceridae of Tropical Australia (Peracarida: Amphipoda), Records of the Australian Museum 65 (1), pp. 1-37 : 13-16

Podocerus hanapepe J. L. Barnard 1970

Figs 10–11

Podocerus hanapepe J. L. Barnard, 1970: 240 , Figs 158, 159.— Ledoyer, 1972: 266, pl. 73.— Myers, 1985: 60, Figs 45, 46.— Myers, 1986: 1391.— Ledoyer, 1986: 930–932, fig. 366.— Myers, 1990:149–157.— Horton, 2008: 846–847 .

Type locality. Waikiki Beach, Oahu , Hawaii .

Material examined. Hawaii. Many specimens, BPBM 12518 , Channel wreck, Kalihi , Honolulu Harbour , Oahu , 11 December 1997, coll. R. C. DeFelice & Co. (HH Station 16); 6 specimens, BPBM 12540 Keehi Lagoon, Airport Rescue Dock, Honolulu, Oahu, 11 December 1997, coll. R. C. DeFelice & Co. (HH Station 17); 1 specimen BPBM 12624 Kewalo Basin, Marine Mammal Laboratory, Honolulu, Oahu, 8 July 1998, Coll. R. C. DeFelice & Co. (HH Station 22); many specimens, BPBM 12760 Hilton Lagoon discharge pipe, Ala Wai Harbour, Honolulu, Oahu, 30 July 1998, coll. R. C. DeFelice & Co. (HH Station 29) .

Australia. Northern Territory. Male, 3.9 mm, dissected, 4 slides, AM P.87612, bommies at north-west end of McCluer Island (11°02'S 132°58'E), 8 m, yellow hydroid, 16 October 1982, coll. J. K. Lowry, (NT 45); female, 4.8 mm, dissected, 1 slide, AM P.87613, bommies at north-west end of McCluer Island (11°02'S 132°58'E), 8 m, yellow hydroid, 16 October 1982, coll. J. K. Lowry, (NT 45); male, 4.0 mm, dissected, 1 slide, AM P.87614, bommies at north-west end of McCluer Island (11°02'S 132°58'E), 8 m, yellow hydroid, 16 October 1982, coll. J. K. Lowry, (NT 45); male, 3.4 mm, SEM pin mount, AM P.85671, bommies at north-west end of McCluer Island (11°02'S 132°58'E), 8 m, yellow hydroid, 16 October 1982, coll. J. K. Lowry, (NT 45); many specimens, AM P.77904, bommies at north-west end of McCluer Island (11°02'S 132°58'E), 8 m, yellow hydroid, 16 October 1982, coll. J. K. Lowry, (NT 45); many specimens, AM P.78309, bommies, north-west end, McCluer Island (11°02'S 132°58'E), 6 m, brown algae, top of reef, 16 October 1982, coll. J. K. Lowry (NT 48); 4 specimens AM P.78307, bommies, north-west end, McCluer Island (11°02'S 132°58'E), 8 m, branching brown algae, 16 October 1982, coll. G. C. B. Poore (NT 32); 1 male specimen, dissected, 1 slide, AM P.87615, bommies, north-west end, McCluer Island (11°02'S 132°58'E), 8 m, branching brown algae, 16 October 1982, coll. G. C. B. Poore (NT 32); 1 male specimen, SEM pin mount, AM P.85673, bommies, north-west end, McCluer Island (11°02'S 132°58'E), 8 m, branching brown algae, 16 October 1982, coll. G. C. B. Poore (NT 32); 3 small specimens, AM P.78311, south end, McCluer Island (11°06'S 133°00'E), 8 m, red algae, 17 October 1982 coll. J. K. Lowry (NT 58) .

Queensland. 13 specimens, AM P. 77413, 200 m off the beach on the southern side of Thursday Island, Torres Strait (10°35'18"S 142°12'58 E), 2 m, low turfing brown algae on mooring rope, 30 September 2006, coll. J. K. Lowry & M. Capa (MI QLD 1894); 1 specimen, AM P. 77414, 200 m off the beach on the southern side of Thursday Island, Torres Strait (10°35'18"S 142°12'58"E), 2 m, low turfing brown algae on mooring rope, 30 September 2006, coll. J. K. Lowry & M. Capa (MI QLD 1894); 1 specimen, AM P. 77415, 200 m off the beach on the southern side of Thursday Island, Torres Strait (10°35'18"S 142°12'58"E), 2 m, low turfing brown algae on mooring rope, 30 September 2006, coll. J. K. Lowry & M. Capa (MI QLD 1894); 75 specimens, AM P.77408, Number One Reef, Katai Nab, North of Horn Island, Torres Strait (10°32'30"S 142°10'16"E), 6 m, submerged rope fibre caught on reef, encrusted with red epiphytic algae on tips, 28 September 2006, coll. J. K. Lowry (MI QLD 1846) ; 8 specimens, AM P.77409, Number One Reef, Katai Nab, North of Horn Island, Torres Strait (10°32'30"S 142°10'16"E), 0.5 m, turtle skeleton old and bleached, amphipod living in pores of bones, 28 September 2006, coll. J. K. Lowry & M. Capa (MI QLD 1847); 1 specimen, AM P.77410, Number One Reef, Katai Nab, North of Horn Island, Torres Strait (10°32'30"S 142°10'16"E), 5.6 m, coarse coral rubble, 28 September 2006, coll. L. E. Hughes (MI QLD 1849) ; 3 specimens, AM P.77411, Number One Reef, Katai Nab, North of Horn Island, Torres Strait (10°32'30"S 142°10'16"E), 8 m, large brick covered in fine sediment, epiphytes, brown algae Padina sp., low turfing algae, 28 September 2006, coll. J. K. Lowry & L. E. Hughes (MI QLD 1850) ; 1 specimen, AM P.77412, Number One Reef, Katai Nab, North of Horn Island, Torres Strait (10°32'30"S 142°10'16"E), 8 m, large brick covered in fine sediment, epiphytes, brown algae Padina sp., low turfing algae, 28 September 2006, coll. J. K. Lowry & L. E. Hughes (MI QLD 1851).

Cocos (Keeling) Islands. 5 specimens (4 males and 1 female), AM P.82180, between Direction Island and Prison Island (12°06'S 96°53'E), 4 m, coral head with encrusted algae in channel in rubble, 8 October 1979, coll. F. H. Talbot.

Papua New Guinea. Male, dissected, 2 slides, AM P.87616, east side of Pig Island, Madang Lagoon (5°09'S 145°49’ E), subtidal pools, red coralline algae Amphiroa sp. and other seaweeds, 1 May 1991, coll. J. D. Thomas ( JDT / PNG-82); many specimens, AM P.76404, east side of Pig Island, Madang Lagoon (5°09'S 145°49’ E), subtidal pools, red coralline algae Amphiroa sp. and other seaweeds, 1 May 1991, coll. J. D. Thomas ( JDT /PNG-82).

Fiji. Male , dissected, 2 slides, AM P.87617, Nukumbutho Reef , Viti Levu, Fiji (18°11'S 178°29'E), no depth, mixed red algae from reef crest, 8 August 1979, coll. A. A. Myers (Stn 8); 24 specimens, AM P.35312, Nukumbutho Reef , Viti Levu, Fiji (18°11'S 178°29'E), no depth, mixed red algae from reef crest, 8 August 1979, coll. A. A. Myers (Stn 8); 41 specimens, AM P.35317, Votualailai , Viti Levu, Fiji (18°10'S 177°32'E), no depth, brown algae Sargassum cristaefolium on reef crest, 9 August 1979, coll. A. A. Myers (Stn 12) .

Cook Islands. 1 specimen, AM P.39381, 2.5 km south of Aorangi village , Raratonga (21°15'06"S 159°43'54"E), 1 m, coral rubble from reef crest, 12 November 1986, coll. A. A. Myers (Stn 2) ; 6 specimens, AM P.39380, 2.5 km south of Aorangi village , Raratonga (21°15'06"S 159°43'54"E), 1 m, brown algae Turbinaria sp. from reef crest, 12 November 1986, coll. A. A. Myers (Stn 1) .

Remarks. Podocerus hanapepe is recorded from Australia for the first time. Material eXamined from McCluer Island in the Northern Territory, Torres Strait in Queensland, Cocos (Keeling) Islands in the Indian Ocean and additionally Papua New Guinea. With a distribution range from Hawaii, Fiji, Hong Kong and Madagascar, the new Australian and Papua New Guinea records provide an addition location within this geographic range. Several specimens in the collection from Australian waters differ slightly from that figured for Hawaii in having a 4-articulate antenna 1.

Material eXamined here from all locations also confirms the presence of studs on the palm medial surface on the male gnathopod 2, as illustrated by Ledoyer, 1986. This character is best observed with the palmar plumose setae removed. SEM images revealed a second unusual character, a discreet indentation or hole in the head above the rostrum, the function of this unique feature is unknown ( Fig. 10A,C ).

Distribution. Australia. Northern Territory, McCluer Island (current study). Cocos (Keeling) Islands. Prison Island (current study). Hawaii: Oahu (J. L. Barnard, 1970). Tonga ( Myers, 1990). Fiji. ( Myers, 1985). Niue Island ( Myers, 1986). Hong Kong ( Horton, 2008). Papua New Guinea: Madang Lagoon (current study). Madagascar ( Ledoyer, 1986).

Figures

Figure 10. Podocerus hanapepe J. L.Barnard, 1970, male, 3.4 mm, AM P. 85671, McCluer Island, Northern Territory.SEM photographs: A) head dorsal view (scale 100 µm); (B) whole animal lateral view (scale 200 µm); (C) head frontal view (scale 100 µm); (D) gnathopod 2 propodus palm plumose setae (scale 10 µm) and (E) whole animal dorsal view (scale 200 µm).

Figure 11.Podocerus hanapepe J. L.Barnard, 1970, male, 3.9 mm,AM P.87612, and female, 4.8 mm, AM P.87613, McCluer Island, Northern Territory (scale 0.1 mm).