Tryphosa Boeck 1871

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...

Full description

Bibliographic Details
Main Authors: Kilgallen, N. M., Lowry, J. K.
Format: Other/Unknown Material
Language:unknown
Published: 2014
Subjects:
Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Amphipoda
Lysianassidae
Tryphosa
Chevreux
Lowry
Seta
Northeast Atlantic
Online Access:https://zenodo.org/record/4909758
https://doi.org/10.5281/zenodo.4909758
Description
Summary: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

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