A generic review of the lysianassoid family Uristidae and descriptions of new taxa from Australian waters (Crustacea, Amphipoda, Uristidae) Author Lowry, J. K. Author Kilgallen, N. M. text Zootaxa 2014 2014-09-26 3867 1 1 92 journal article 3965 10.11646/zootaxa.3867.1.1 e5bb465f-e713-45c1-8e0f-2c6125494b44 1175-5326 5585734 B7C6EC5F-5AA3-43B1-BD3D-D8111E0EC3A7 Uristes Dana, 1849 ( Fig. 49 , 50 ) Uristes Dana, 1849: 136 .— Dana, 1852: 209 .— Dana, 1853: 917 .— Bate, 1862: 89 .— Stebbing, 1906: 63 .— Stephensen, 1929: 64 .—J.L. Barnard, 1962: 35 .— Hurley, 1963: 91 .—J.L. Barnard, 1969: 367 .— Ledoyer, 1986: 816 .— Barnard & Karaman, 1991: 538 .— Lowry & Stoddart, 2003: 284 (catalogue). Uristoides Schellenberg, 1931: 27 .— Barnard & Karaman, 1991: 539 (in part). Type species. Uristes gigas Dana, 1852 , monotypy. Included species. Uristes contains 2 species: U. gigas Dana, 1849 ; U. subchelatus ( Schellenberg, 1931 ) . Incertae sedis . Uristes abyssi ( Norman, 1900 ) (family unknown); U. albinus (K.H. Barnard, 1932 ) (family unknown); U. dawsoni Hurley, 1963 (family unknown); U. entalladurus J.L. Barnard, 1963 ( Lysianassidae , Tryphosinae ); U. georgianus ( Schellenberg, 1931 ) (family unknown); U. natalensis K.H. Barnard, 1916 (family unknown); U. paramoi ( Schellenberg, 1931 ) . Removals. Uristes perspinis J.L. Barnard, 1967 to the tryphosine genus Cedrosella Barnard & Karaman, 1987 based on gnathopod 1 with a tapering first coxa and a short carpus, a non-constricted inner ramus on uropod 2 and a moderately cleft telson. Uristes abyssalis ( Stephensen, 1925 ) is tentatively removed to the tryphosine genus Gronella Barnard & Karaman, 1991 , based on mandible molar triturating, gnathopod 1 coxa is slightly tapering, carpus short, propodus margins subparallel and the telson moderately cleft . The condition of the male antenna 2 peduncle (with or without brush setae) and the condition of the inner ramus of uropod 2 (constricted or not) needs to be verified to confirm the generic placement. Uristes barbatipes ( Stebbing, 1888 ) is removed the tryphosine genus Tasmanosa Lowry & Kilgallen, 2014 based on the well-developed antenna 1 accessory flagellum and the triturating molar, maxilla 2 inner plate slightly shorter than outer, the distinctive carpus and propodus of gnathopod 1. Uristes serratus Schellenberg, 1931 and U. yamana Chiesa & Alonso de Pina, 2007 appear to be congeneric, and belong to a yet to be described genus in the Uristidae based on the absence of a callynophore in the female and apparently in the male, the compressed carpus of gnathopod 1 and the cleft telson. Uristes adarei ( Walker, 1903 ) ; U . antennibrevis J.L. Barnard, 1962 ; U . californicus Hurley, 1963 ; U. mediator J.L. Barnard, 1962 ; U. stebbingi ( Walker, 1903 ) ; U. sulcus Griffiths, 1974 are removed to the tryphosine genus Tryphosella Bonnier, 1893 based on the triturating molar, maxilla 1 with a 6/5 setal-tooth arrangement, the tapering coxa of gnathopod 1. Uristes velia J.L. Barnard, 1961 is removed to the tryphosine genus Cheirimedon Stebbing, 1888 based on the maxilla 1 setal-tooth arrangement; gnathopod 1 carpus short and propodus margins subparallel; pereopod 4 with weak posteroventral lobe; and telson deeply cleft . Diagnostic description. [based on type species] Antenna 1 peduncle article 1 without anterodistal lobe; accessory flagellum not forming cap covering callynophore or flagellum with an elongate article 1 (at least twice as long as article 2) partially covering callynophore. Antenna 2 without brush setae. Mandible molar ridge-like, narrow, setose with narrow distal triturating surface . Maxilla 1 outer plate a well developed 7/4 crown. Maxilla 2 inner plate slightly shorter than outer plate. Gnathopod 1 subchelate; coxa 1 large, about as long as coxa 2, subrectangular with straight anterior margin or distally subovate; ischium short (length less than 2 × breadth); carpus short (length 1 to 2 × breadth) to long (length 2 to 4 × breadth); propodus margins subparallel or slightly tapering. Uropod 2 inner ramus not constricted. Telson deeply cleft . FIGURE 49. Uristes gigas Dana, 1849 , male, 14.6 mm, AM P.38310; female, approx. 19 mm, BMNH 1889:5:15:6 (as Tryphosa antennipotens ); from off Heard Island, Southern Ocean. Scale bars: MP, MX1, 0.1 mm; remainder, 0.5 mm. FIGURE 50. Uristes subchelatus ( Schellenberg, 1931 ) , syntype female, 17.5 mm, ZMB 22726, from Bahia Inutil, Magellanic area. LM, EP3, whole G1, whole G2, P5, T after Schellenberg (1931) . Scale bars: 0.5 mm. Remarks. As Chisea & Alonso (2007) point out Uristes is in need of revision. The diagnosis provided here is based on the type species. Of the 23 species currently assigned to Uristes , only two remain. Eight of these species are so poorly described that they cannot be placed. Based on the subchelate first gnathopod with a large coxa with a straight anterior margin and a short carpus Uristes appears to be most similar to the Arctic/boreal genera Anonyx and Onisimus . It differs from both in having a ridge-like narrow setose molar with a distal triturating surface and in not having an accessory flagellum cap. Distribution. Southern Ocean and southern Australian waters.