Cryosignum Just & Wilson 2007

• Main Authors: Just, Jean, Wilson, George D. F.
• Format: Text
• Language: unknown
• Published: Zenodo 2021
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Malacostraca; Isopoda; Paramunnidae; Cryosignum; Antarctic; Hale; Charcot; Menzies; Joubin; Antarc*
• Online Access: https://dx.doi.org/10.5281/zenodo.4697824; https://zenodo.org/record/4697824

Key to species of Cryosignum 1. Pereionite 1–7 dorsal surface smooth; antennula article 1 length subequal to article 2, or longer than article 2............ 2 - Pereionite 1–7 dorsal surface with transverse ridges; antennula article 1 shorter than article 2......................... 3 2. Head frontal margin nearly straight with angular corners; pereionites 1–7 lateral margin rounded, smooth; pleotelson lateral margin with proximal neck before convex margin; antennula articles 3 and 5–6 of subequal length, longer than article 4............................................................................ Cryosignum nordenstami sp. nov. - Head front margin broadly convex, without angular corners; pereionite 1 lateral margin broadly rounded with small concavity; pereionite 1–4 lateral margins denticulate; pleotelson lateral margin convex; antennula articles 5–6 of subequal length, longer than articles 3–4....................................................... Cryosignum latifrons (Menzies, 1962) 3. Head frontal margin nearly straight laterally, with angular lateral corners adjacent to antennae; eyestalks shaft constricted proximally; pleotelson laterally rounded, with inflection between proximal and lateral margins.............................................................................................. Cryosignum incisum (Richardson, 1908) - Head frontal margin broadly rounded, without angular lateral corners adjacent to antennae; eyestalks shaft before apex approximately parallel; pleotelson laterally rounded with inflection and distinct neck between lateral and proximal margins............................................................................... Cryosignum lunatum (Hale, 1937) : 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 410, DOI: 10.11646/zootaxa.4952.3.1, http://zenodo.org/record/4690423 : {"references": ["Menzies, R. J. (1962) The zoogeography, ecology, and systematics of the Chilean marine isopods. Reports of the Lund University Chile Expedition 1948 - 49, Lunds Universitets Arsskrift, Neue Folge, Avd. 2, 57, 1 - 162.", "Richardson, H. (1908) Isopodes (2 e Memoire). In: Charcot, J. & Joubin, L. (Eds.), Expedition Francaise (1903 - 1905), commandee par le Dr Jean Charcot, Documents scientifiques de Science naturelle. Crustaces, Paris, 1908, pp. 1 - 8.", "Hale, H. M. (1937) Isopoda and Tanaidacea. Australasian Antarctic Expedition 1911 - 14. Scientific Reports, Ser. C 2, Zoology and Botany, 2 (2), 1 - 45."]}