Spiniferomonas cuspidata (Balonov) Kapustin, 2024

Kapustin, Dmitry A., 2024, An updated checklist of the silica-scaled chrysophytes from Russia, Phytotaxa 669 (3), pp. 165-193 : 172

57. Spiniferomonas cuspidata (Balonov) Kapustin , comb. et stat. nov.

Basionym: Spiniferomonas trioralis f. cuspidata Balonov. 1978a . Bot. Zhurn. 11: 1646, pl. 5: 5–8.

Lectotype (designated here): [icon in] Botan. Zhurn. 11: pl. 5: 7. 1978a.

Registration: http://phycobank.org/104966

≡ Chromophysomonas trioralis f. cuspidata (Balonov) Preisig & D.J. Hibberd

Vologda region ( Balonov 1978a, 1980b); Sheksna Reservoir, Bolshezemelskaya tundra ( Balonov 1978a); Krasnoyarsk Territory ( Balonov & Kuzmina 1986 as C. trioralis f. cuspidata, Bessudova et al. 2018b ); Magadan Region ( Kuzmin et al. 1989 as C. trioralis f. cuspidata ); Lake Baikal ( Vorobyova et al. 1992, Bessudova et al. 2017); Boguchany Reservoir ( Bessudova & Likhoshway 2017); Republic of Buryatia ( Bessudova et al. 2018a,c); Republic of Yakutia ( Bessudova et al. 2019, 2021, 2022b, 2023a); Irkutsk Region ( Bessudova et al. 2023f).

Remark. Spiniferomonas trioralis f. cuspidata differs from Spiniferomonas trioralis f. trioralis in having three times longer (up to 12.3 µm) spine-scales. The spine length is an important taxonomic feature in Paraphysomonas ( Scoble & Cavalier-Smith 2014) . Thus, the raising of this form to a species rank is justified.