The deep-sea scavenging genus Hirondellea (Crustacea: Amphipoda: Lysianassoidea: Hirondelleidae fam. nov.) in Australian waters Author Lowry, J. K. Author Stoddart, H. E. text Zootaxa 2010 2010-01-06 2329 1 37 55 https://biotaxa.org/Zootaxa/article/view/zootaxa.2329.1.3 journal article 10.11646/zootaxa.2329.1.3 1175-5326 Hirondellea kapala sp. nov. ( Figs 9–11 ) Type material. HOLOTYPE , male, 7.6 mm , AM P.68979, south-east of Broken Bay , New South Wales , Australia , 33°37’S , 152°04’E to 33°39’S , 152°02’E , 896–924 m , dredge, 10 December 1980 , R . Springthorpe on RV Kapala , stn K80-20-09 . PARATYPES : 1 male , AM P.68980, type locality ; 1 female , ovigerous, AM P.68981, type locality ; 1 female , non-ovigerous, with setose oostegites, P.68984, type locality; 1 specimen , AM P.68983, east of Broken Bay , New South Wales , Australia , 33°30’S 152°09’E to 33°33’S 152°11’E , 922– 1015 m , dredge, 12 February 1986 , RV Kapala , stn K-86-01-08 ; 6 specimens , AM P.68978, east of Broken Bay , New South Wales , Australia , 33°31’S 152°08’E to 33°33’S 152°07’E , 914 m , dredge, R . Springthorpe , 10 December 1980 , RV Kapala , stn K-80-20-08 ; 3 specimens , AM P.68982, north-east of Port Jackson , New South Wales , Australia , 33°44’S 151°57’E , 820–889 m , beam trawl, 11 February 1986 , RV Kapala , stn K-86- 01-07 . FIGURE 9. Hirondellea kapala sp. nov. Holotype male, 7.6 mm, AM P.68979. Additional material. 6 specimens , AM P.49813, north-east of Coffs Harbour , New South Wales , Australia , 30°10.88'S 153°32.21'E , 1000 m , baited trap , 12–13 August 1993 , 1030–0830 hrs, P. Berents , R . T . Springthorpe & W. Vader , MV Cheryl Lee , SEAS stn NSW-876. — 2 specimens , AM P.49833 and 2 specimens , AM P.56083, same data, SEAS stn NSW-877. — 21 specimens , AM P.43371, north-east of Coffs Harbour , New South Wales , Australia , 30°10.94'S , 153°32.27'E , 1000 m , baited trap , bottom temperature 7.4°C, 8–9 September 1994 , J.K. Lowry & K. Dempsey , MV Carrie Anne , SEAS stn NSW-1000. — 2 specimens , AM P.48099, north-east of Coffs Harbour , New South Wales , Australia , 30°10.94'S 15332.27'E, 963 m , baited trap , set 1215 hrs, P. Berents , R . T . Springthorpe & W. Vader on MV Cheryl Lee , 11–12 August 1993 , SEAS stn NSW-862. — 1 specimen , AM P.48118, same data, SEAS stn NSW-863. — 1 specimen , AM P.50072, north-east of Coffs Harbour , New South Wales , Australia , 30°10.94'S 153°32.27'E , 1000 m , baited trap , bottom temperature 7.4°C, 9–10 September 1994 , J.K. Lowry & K. Dempsey on MV Carrie Annee , SEAS stn NSW-1021. — 77 specimens , AM P.44366, off Wollongong , New South Wales , Australia , 34°33.41'S , 151°21.35'E , 1000 m , baited trap , 6–7 May 1993 , P. Freewater , S. Keable & W. Vader on MV Robin E , SEAS stn NSW-788. — 87 specimens , AM P.44375, same data, SEAS stn NSW-789. — 2 specimens , MV J60580 , south of Point Hicks , Victoria , Australia , 38°19.60'S 149°24.30'E , 930 m , rock, rubble, clay, sand, biogenic sediment, WHOI epibenthic sled, 23 July 1986 , M.F. Gomon et al. on RV Franklin , stn SLOPE 33 . — 8 specimens , MV J60581 , off Freycinet Peninsula , Tasmania , Australia , 42°0.20'S 148°37.70'E , 720 m , coarse shelly sand, WHOI epibenthic sled, 27 July 1986 , M.F. Gomon et al. on RV Franklin , stn SLOPE 46 . — 5 specimens , MV J60582 , off Freycinet Peninsula , Tasmania , Australia , 42°2.20'S , 148°38.70'E , 800 m , coarse shelly sand, WHOI epibenthic sled, 27 July 1986 , M.F. Gomon et al . on RV Franklin , stn SLOPE 45 . — 1 specimen , AM P.51358, east of Fortescue Bay , Tasmania , Australia , 43°08.96'S 145°15.36'E , 1000 m , baited trap 1, 9–10 April 1994 , J.K. Lowry & K. Dempsey on MV Martrudan , SEAS stn TAS-419. — 3 specimens , AM P.51390, same data, SEAS stn TAS-421. — 1 specimen , AM P.51384, same data, SEAS stn TAS-422. — 21 specimens , AM P.57980, same data, SEAS stn TAS-423. FIGURE 10. Hirondellea kapala sp. nov. Holotype male, 7.6 mm, AM P.68979. Scales represent 0.1 mm. Type locality. South-east of Broken Bay , New South Wales , Australia , 33°37’S 152°04’E to 33°39’S 152°02’E , 896–924 m depth. Etymology. The specific name refers to the vessel, FRV Kapala , from which the collections of the type specimens were made; used as a noun in apposition. FIGURE 11. Hirondellea kapala sp. nov. Holotype male, 7.6 mm, AM P.68979. Scales represent 0.1 mm. Diagnosis. Head lobe broadly rounded. Epistome weakly produced, broadly rounded. Gnathopod 1 propodus palm slightly acute, straight; dactylus strongly over-reaching palm, with 1 subterminal spine on inner margin. Gnathopod 2 minutely subchelate; propodus length 1.8 × breadth. Epimeron 1 anteroventral corner rounded. Epimeron 3 posteroventral corner broadly rounded. Uropod 2 inner ramus incised. Uropod 3 outer ramus article 2 long, 0.3 × article 1. Telson length 1.4 × breadth, cleft 51 %. Remarks. Hirondellea kapala is the only Australian species with a slightly acute palm on gnathopod 1, but other species in the genus, such as H. dubia Dahl, 1959 ; H. fidenter J.L. Barnard, 1966 ; H. gigas ( Birstein & Vinogradov, 1955 ) ; H. glutonis Barnard & Ingram, 1990 ; H. trioculata Chevreux, 1889 ; H. wolfendeni ( Tattersall, 1909 ) all have this character. Among these species only H. kapala , H. trioculata and H. wolfendeni have a straight margin on the palm. Hirondellea kapala and H. wolfendeni both have the gnathopod 1 dactylus strongly overlapping the palm. Gnathopod 2 is subchelate in H. kapala but minutely chelate in H. wolfendeni . Distribution. South-eastern Australia in 720–1000 m depth.