Mallomonas calceolus D.E.Bradley

(Fig. 2E, F)

DISTRIBUTION. — Widely distributed (Kristiansen & Preisig 2007; Řezáčová & Neustupa 2007).

REMARKS

We found two scales which look quite different. The first one was recorded from site 9. It represents an anterior scale. The scale shield and a dome are covered with widely-spaced papillae. The one of the anterior submarginal ribs terminates in a short projection (Fig. 2E). Another scale was recorded from site 13. Its shield is covered with papillae regularly-spaced and arranged in rows and the dome is smooth. A distinct base plate pore is visible at the base of the V-rib (Fig. 2F). The similar scale was depicted by Bradley (1964, pl. 1, fig. 3). Although the number of papillae may significantly vary (Kristiansen 2002), the presence of the base plate pore was not mentioned in the protologue (Bradley 1964). Probably, the scale in Figure 2F belongs to another Mallomonas species but more scales are needed to confirm this suggestion.