Tryphosa Boeck 1871

• Main Authors: Kilgallen, N. M., Lowry, J. K.
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2014
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Malacostraca; Amphipoda; Lysianassidae; Tryphosa; Northeast Atlantic
• Online Access: https://doi.org/10.5281/zenodo.4909758; http://treatment.plazi.org/id/03DE241FFF8DFF90F0A2F9C953B3ED88

Tryphosa Boeck, 1871 Tryphosa Boeck, 1871: 117.― Stephensen, 1925: 101 (in part). Orchomene .― Barnard & Karaman, 1991: 507 (in part). Tryphosella .―J.L. Barnard, 1969: 365 (in part). Type species. Anonyx nanus Krøyer, 1846a, by monotypy. Included species. Tryphosa includes two species: T. crenata (Chevreux & Fage, 1925); T. nana (Krøyer, 1846a). Diagnostic description. Antenna 1 flagellum article 1 lacking robust seta on distal margin; accessory flagellum forming cap. Antenna 2 flagellum article 5 slender (with dense brush setae on the anterior margin). Mandibular incisor slightly curved; molar a reduced column with convex triturating surface (button); palp attached midway. Maxilla 1 ST-7 serrate along most of curved medial margin; ST-D slender, serrate along the entire curved medial margin. Maxilliped outer plate apical setae present. Gnathopod 1 subchelate; coxa large, nearly as long as coxa 2, not tapering; carpus slightly shorter than propodus; propodus palm slightly acute, straight. Pereopod 4 coxa with well developed posteroventral lobe. Uropod 2 inner ramus constricted. Uropod 3 rami with plumose setae in male and female; inner ramus broad, lanceolate. Telson deeply cleft. Remarks. See d’Udekem d’Acoz & Havermans (2012) for a comprehensive summary of the historical taxonomic and nomenclatural treatment of Tryphosa . Tryphosa is easily separated from Orchomenella , with which it has long been associated, by the constricted inner ramus on uropod 2. Distribution. Northeast Atlantic, Mediterranean Sea, Adriatic Sea. Published as part of Kilgallen, N. M. & Lowry, J. K., 2014, The Tryphosa group (Crustacea: Amphipoda: Lysianassoidea: Lysianassidae: Tryphosinae), pp. 501-545 in Zootaxa 3768 (5) on pages 536-537, DOI:10.11646/zootaxa.3768.5.1, http://zenodo.org/record/4909684