Exosphaeroma studeri Vanhoeffen , 1914

Khalaji-Pirbalouty, Valiallah & Gagnon, Jean-Marc, 2023, Illustrated catalogue of sphaeromatoid isopods (Crustacea, Malacostraca) in the Canadian Museum of Nature (CMN), Zoosystematics and Evolution 99 (2), pp. 375-389 : 375

Exosphaeroma studeri Vanhoeffen, 1914

Fig. 3C, D

Exosphaeroma studeri Vanhöffen, 1914: 510-511, fig. 44; Menzies 1962a: 132-133, fig. 43; Nierstrasz 1931: 195; Bruce 2003: 369.

Sphaeroma calcarea .- Dollfus 1891: 64, pl. 8, fig. 7. [Not Sphaeroma calcarea Dana, 1853; misidentification, according to Menzies 1962a].

Type locality.

Punta Arenas, Chile.

Material examined.

Chile. 1 ♂ (17.1 mm), 1 ovigerous ♀ (14.5 mm); Banco de las Taeas , Isla, Navarino; 5 Feb. 1970; E.L. Bousfield leg.; CMNC 2023-0242. 1 ♂ (18 mm) 5 ♀♀ (up to 12 mm); Canal Beagle ; 19 Feb. 1970; E.L. Bousfield leg.; CMNC 2023-0243. 2 ♂♂ (9 mm), 3 ♀♀ (up to 6 mm) ; Isla Navarino ; 5 Feb. 1970; E.L. Bousfield leg.; CMNC 2023-0244. 1 ♂ (9.8 mm); Peninsula Scott ; W. Bank LW-HW; 20 Feb. 1970; E.L. Bousfield leg.; CMNC 2023-0245. 1 ♂ (15 mm), 2 subadult ♂♂ (13 mm), 3 ♀♀ (up to 13 mm); Islotes, Mamones, off Isla Lennox ; 6 February 1970; E.L. Bousfield leg.; CMNC 2023-0246. 2 ♀♀ (up to 9.1 mm); Punta Robalo , Isla, Navarino ; 29 Jan. 1970; E.L. Bousfield leg.; CMNC 2023-0247 .

Distribution.

Chile, Straits of Magellan (Menzies, 1962a).

Genus Gnorimosphaeroma Menzies, 1954

Figures

Figure 3. Exosphaeroma russellhansoni Wall, Bruce & Wetzer, 2015, male, (CMNC 1984 - 1465). A. Lateral view; B. Ventral view. Exosphaeroma studeri Vanhoeffen, 1914, male, (CMNC 023 - 0242); C. Dorsal view; D. Lateral view. Gnorimosphaeroma oregonense (Dana, 1853), male, (CMNC 1985 - 0715); E. Dorsal view; F. Lateral view. Ischyromene menziesi (Sivertsen & Holthuis, 1980), male, (CMNC 1985 - 0652); G. Dorsal view; H. Pleotelson, dorsal view.