Edvardsen, Eikrem & Probert, 2011.
Moestrup (1979: 68, figs 20–22), LeRoi & Hallegraeff (2004: 81, fig. 15)
Chrysochromulina ericina Parke & Manton, in Parke et al. (1956: 389, figs 1–19)
Cells ovoid to oblong, slightly flattened, 5–12 µm long, 4–10 µm wide, flagellar pole obliquely truncated, with a slight ±central depression, biflagellate; body covered in spinous unmineralised scales. Body scales of 2 types: spine scales 28–30 long, with a circular base-plate 1–1.4 µm diameter, marked with concentric lines on distal surface, with a spine 9–15 µm long and abruptly truncate; plate scales numerous, elliptical, 0.6–0.9 µm long, 0.5–0.7 µm wide, with a pattern of fine striae on one surface and a slightly raised rim. Flagella equal, c. 20 µm long, 2–2.5 times body length, arising from slightly off-centre of depression. Haptonema c. 53 µm long, 4–5 times body length when extended.
Southern Ocean, south of Australia; New Zealand, and also widely distributed in northern seas (Moestrup, 1979); 50°15’N 04°13’W (Parke et al., 1956).
Moestrup (1979) and Leadbeater (1972b) noted variability in the dimensions of the scales.
Chrysochromulina genus description: Cells have homodynamic flagella and a coiling haptonema, and electron microscopy is usually required to identify the species. As well as being photosynthetic, these fragile haptophytes ingest picoplanktonic and nanoplanktonic organisms by phagocytosis.