Sophrosyne cantractia Lowry & Stoddart 2010, sp. nov.

• Main Authors: Lowry, J. K., Stoddart, H. E.
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2010
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Malacostraca; Amphipoda; Sophrosynidae; Sophrosyne; Sophrosyne cantractia; Antarc*; Antarctica; aurora australis; Enderby Land; Southern Ocean
• Online Access: https://doi.org/10.5281/zenodo.5314952; http://treatment.plazi.org/id/03A86448963FFFD8FF34FBACCD3BA435

Sophrosyne cantractia sp. nov. (Figs 4, 5) Type material . HOLOTYPE, female, ovigerous (2 eggs), 5.8 mm, MV J38218, western part of MacRobertson Shelf, Antarctica (66°55.51'S 62°32.72'E to 66°55.33'S 62°32.16'E), 113 m, epibenthic sled, M. O'Loughlin on RSV Aurora Australis , 11 February 1993 (stn AA93-124). PARATYPES: 1 specimen, 4.2 mm, MV J38219, western part of MacRobertson Shelf, Antarctica (66°53.69'S 63°06.34'E to 66°53.67'S 63°05.51'E), 367–439 m, epibenthic sled, M. O'Loughlin on RSV Aurora Australis , 11 February 1993 (stn AA93-125); 2 juveniles, MV J60736 and MV J60737, off Enderby Land, Antarctica, Southern Ocean (65°56.40'S 50°52.10'E), 386–400 m, shelly mud, silt and bryozoan shell, epibenthic sled, M. Norman on MS Nella Dan , 15 November 1985 (stn HRD 010). Type locality. Western part of MacRobertson Shelf, Antarctica (66°55.51'S 62°32.72'E to 66°55.33'S 62°32.16'E), 113 m. Etymology . The specific name is contrived as an anagram of the specific name of the neighbouring species, Sophrosyne antarctica . Diagnostic description . Head lateral cephalic lobe small, narrowly rounded; eyes apparently absent. Antenna 1 peduncular article 1 short, length 1.3 x breadth; accessory flagellum medium length, 0.5 x primary flagellum, article 1 short, 1.3 x article 2; flagellum 7-articulate, without callynophore. Antenna 2 peduncular article 3 0.6 x article 4; flagellum 7-articulate. Mandible incisors with straight margins; palp article 2 slender , 1 x article 3, with 2 submarginal posterodistal A2-setae, D2-setae present , article 3 length 7 x breadth, without D3-setae , with 3 apical E3-setae. Maxilla 1 outer plate with setal-teeth in a 2/3 arrangement . Maxilla 2 inner plate narrow, outer plate broader; inner plate length 0.66 x outer plate. Maxilliped inner plate subrectangular, with 1 apical, nodular robust setae; outer plate submarginal setae long, simple; palp article 2 broad , length 1.8 x breadth, 1.1 x article 3, article 3 slender, length 2.6 x breadth, dactylus with unguis vestigial. Gnathopod 1 basis ...