Austrosignum Hodgson 1910

• Main Authors: Just, Jean, Wilson, George D. F.
• Format: Text
• Language: unknown
• Published: Zenodo 2021
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Malacostraca; Isopoda; Paramunnidae; Austrosignum; Antarctic; South Shetland Islands; Seta; Hodgson; Antarc*
• Online Access: https://dx.doi.org/10.5281/zenodo.4697821; https://zenodo.org/record/4697821

Key to species of Austrosignum 1. Pereionite 1–7 dorsal surface smooth, without ornamentation; eyestalks shaft before apex approximately parallel......... 2 - Pereionite 1–4 dorsal surface with transverse bumps (wrinkled appearance in dorsal view), with pair of low broad lobes or convexities; pereionite 5–7 dorsal surface with transverse ridges; eyestalks shaft before apex constricted proximally......................................................................... Austrosignum escandellae Castelló, 2004 2. Pleotelson posterior projection evenly curving into lateral margin; antennula article 1 shorter than article 2; antenna article 5 only slightly longer than article 4; pereiopod I merus posterior margin with only fine setae................................................................................................ Austrosignum glaciale Hodgson, 1910 - Pleotelson posterior projection set apart from lateral margins by concavity at level of uropods; antennula article 1 length subequal to, or longer than article 2; antenna article 5 distinctly longer than article 4; pereiopod I merus posterior margin with one robust seta on distal margin............................................................................. 3 3. Body dorsally with scattered fine simple setae; body widest in male at pereionite 2; pleotelson lateral margin with proximal neck before convex margins..................................................... Austrosignum latum sp. nov. - Body dorsal surface with scattered long simple setae; body widest in male at pereionite 3; pleotelson lateral margin convex, without proximal neck........................................................ Austrosignum pilosum sp. nov. : Published as part of Just, Jean & Wilson, George D. F., 2021, Redescriptions and new species in the ' Austrosignum-Munnogonium' complex sensu Just & Wilson (2007), mainly from the Southern Hemisphere (Crustacea Isopoda: Paramunnidae), pp. 401-447 in Zootaxa 4952 (3) on page 403, DOI: 10.11646/zootaxa.4952.3.1, http://zenodo.org/record/4690423 : {"references": ["Castello, J. (2004) Two new species of Paramunnidae (Crustacea, Isopoda, Asellota) from the South Shetland Islands. Antarctic Science, 16, 239 - 252. https: // doi. org / 10.1017 / S 0954102004002093", "Hodgson, T. V. (1910) Crustacea. IX. Isopoda. National Antarctic Expedition, Natural History, 5, 1 - 77."]}