Uristes Dana 1849

• Main Authors: Lowry, J. K., Kilgallen, N. M.
• Format: Text
• Language: unknown
• Published: Zenodo 2014
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Malacostraca; Amphipoda; Uristidae; Uristes; Arctic; Antarctic; Southern Ocean; Baja; De la Costa; Spence; Hurley; Lowry; Pina; Bonnier; Yamana; Antarc*
• Online Access: https://dx.doi.org/10.5281/zenodo.6319066; https://zenodo.org/record/6319066

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. 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. : Published as part of Lowry, J. K. & Kilgallen, N. M., 2014, A generic review of the lysianassoid family Uristidae and descriptions of new taxa from Australian waters (Crustacea, Amphipoda, Uristidae), pp. 1-92 in Zootaxa 3867 (1) on pages 80-83, DOI: 10.11646/zootaxa.3867.1.1, http://zenodo.org/record/5585734 : {"references": ["Dana, J. D. (1849) Synopsis of the genera of Gammaracea. 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