Sophrosyne cantractia Lowry & Stoddart 2010, sp. nov.

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

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 length 1.8 ...