Gnorimosphaeroma oregonense (Dana, 1853)

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

Gnorimosphaeroma oregonense (Dana, 1853)

Fig. 3E, F

Spheroma oregonensis Dana, 1853: 778, pl. 52x; Richardson 1899: 836; 1900: 223.

Sphaeroma olivacea .- Lockington, 1877: 45, pl. 1.

Exosphaeroma oregonensis .- Richardson, 1905: 296, figs 315, 316; Hatch, 1947: 213, Pl. 6, figs. 82, 83.

Neosphaeroma oregonense .- Monod, 1931: 76, fig. 74.

Gnorimosphaeroma oregonensis .- Miller, 1968: 12; Hoestlandt 1969: 325; Schultz 1969: 129, fig. 187; Kussakin 1971: 406-408, fig. 260-262; Hoestlandt 1975: 31; Brusca et al. 2007: 537, pl. 243; Wetzer et al. 2021: 32, figs 1-9 (Neotype designation).

Gnorimosphaeroma oregonensis lutea .- Menzies, 1954: 406, figs 1-4, 6A-P; Riegel 1959: 154-161, fig. 1A.

Gnorimosphaeroma oregonensis oregonensis .- Menzies, 1954: 406, figs 5, 7A-E, 12; Riegel 1959: 154-161, fig. 1B.

Note.

Latest synonymies to the species can be found in Wetzer et al. (2021).

Material examined.

Canada. 50 ♂♂ (up to 9.5 mm) , 7 ♀♀ (up to 6 mm); British Columbia, Sayward Land Distr., Gowlland Island ; 8 Jul. 1983; F. Rafi leg.; CMNC 1985-0715 . 16 ♂♂ (up to 9.5 mm), 42 ♀♀ (up to 7 mm); British Columbia, Nootka Land Distr. ; 13 June 1976; R.M. O’Clair leg.; CMNC 1987-0201 . 75 ♂ & ♀; British Columbia, Sayward Land Distr. ; 30 Aug. 1984; F. Rafi leg.; CMNC 1986-0206 . 6 ♂♂ (up to 9 mm), 10 ♀♀ (up to 6 mm); British Columbia, Comox Land Distr. ; 28 Jul. 1959; E. L. Bousfield leg.; CMNC 1987-0141 . 97♂ & ♀; Alaska, Juneau Borough ; 13 Jun. 1961; E. L. Bousfield leg.; CMNC 1987-0146 . USA. 21♂ & ♀; Washington, Mason Co. (WA); 17 Jul. 1966; E. L. Bousfield leg.; CMNC 1991-2543 .

Distribution.

Widely distributed in North America from Alaska, British Columbia, and Vancouver to Washington ( Kussakin 1979; Wetzer et al. 2021).

Genus Ischyromene Racovitza, 1908

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.