Paraphysomonas truncata (Preisig & D.J.Hibberd) Scoble & Cavalier-Smith

Kapustin, Dmitry A., Gusev, Evgeniy S., Lilitskaya, Galina G. & Kulikovskiy, Maxim S., 2020, Silica-scaled chrysophytes from the Ukrainian Polissia, Cryptogamie, Algologie 20 (12), pp. 121-135 : 125

Paraphysomonas truncata (Preisig & D.J.Hibberd) Scoble & Cavalier-Smith

( Fig. 1D )

DISTRIBUTION. — Great Britain ( Preisig & Hibberd 1982), Denmark ( VØrs et al. 1990), Finland ( Ikävalko 1994); rare species.

REMARKS

This species differs from other Paraphysomonas taxa in having truncate and tapering spine tip.

Figures

FIG. 1. — Chrysosphaerella Lauterborn, Paraphysomonas De Saedeleer emend. Scoble & Cavalier-Smith, Lepidochromonas Kristiansen and Spiniferomonas E.Takahashi species from the Ukrainian Polissia:A, Chrysosphaerella brevispina Korshikov,spine scale,TEM;B, Stomatocyst of Chrysosphaerella coronacircumspina Wujek & Kristiansen with broken spine scale and plate scales, SEM; C, Paraphysomonas acuminata Scoble & Cavalier-Smith, TEM; D, Paraphysomonas truncata (Preisig & D.J.Hibberd) Scoble & Cavalier-Smith, TEM; E, Paraphysomonas sp., scale with broken spine, SEM; F, Lepidochromonas sp., TEM; G, Spiniferomonas bourrellyi E.Takahashi,spine scale with plate scales attached to it, SEM;H, Spiniferomonas cf.trioralis E.Takahashi, spine scale,SEM;I, Chrysosphaerella longispina J.B.Petersen & J.B.Hansen, SEM. Scale bars: A, D, E, G, H, 1 µm; B, C, 2 µm; F, 0.5 µm; I, 5 µm.