Meridiosignum kerguelensis

• Main Authors: Just, Jean, Wilson, George D. F.
• Format: Other/Unknown Material
• Language: unknown
• Published: 2021
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Malacostraca; Isopoda; Paramunnidae; Meridiosignum; Meridiosignum kerguelensis; Kerguelen; Menzies; Southern Ocean
• Online Access: https://zenodo.org/record/4697830; https://doi.org/10.5281/zenodo.4697830

Meridiosignum kerguelensis (Vanhöffen, 1914) (Figs 10–11) Paramunna kerguelensis Vanhöffen, 1914: 574, fig. 105a, b.—Wolff, 1962: 252. Metamunna kerguelensis.— Wolff & Brandt, 2000: 130–131. Meridiosignum kerguelensis.— Just & Wilson, 2007: 3, 18. not Paramunna kerguelensis (Chile). — Menzies, 1962: 47; Wolff, 1962: 252. Type fixation. Lectotype, ovigerous ♀.—Here selected. Type locality. Kerguelen, Southern Ocean. Remarks on type material. Vanhöffen (1914) only illustrated a single female specimen that he referred to as “ type ”; we identified this specimen based on the configuration of the body and a missing flagellum on the antenna. Although Vanhöffen (1914:574) indicated that only 7 specimens were present, 2 vials from Gauss station 5I02 (5 January 1902) were found in the collection, and the vial containing his illustrated female specimen (also illustrated herein) had 8 specimens, 2 of which were mancas. We suspect that he overlooked one of the mancas when counting. Another vial in ZMB 17711 from the same Gauss station 5I02 (date 5 January 1902) contained an ovigerous female and an adult male, both of which are illustrated here. Material examined. Lectotype, ovigerous ♀, 1.5 mm, drawn “type” of Vanhöffen (1914), Kerguelen, Gauss station 5I02, ZMB 17711. Paralectotypes. Same data as lectotype, ZMB 32001 (adult ♂ illustrated herein, 1.7 mm, 2 ovigerous females, juvenile male, 3 juvenile females, 2 mancas). Other material (not listed by Vanhöffen). Kerguelen, Gauss stn 24I02 (ovigerous female) and Gauss stn 15II03 (ovigerous female). AM P60462. Description. Body ovate, width 0.55 length and widest at pereionite 3 in both sexes. Head length 0.40 width; length posterior to eyestalks in female 0.43 anterior length, 1.3 anterior length in male. Frontal margin shallow convex, almost straight medially with angular lateral margins adjacent to antennae (several denticles on lateral corners). Eyestalks in female length 1.5 width, male length 1.8 width, apex rounded, shaft slightly constricted proximally, long ...