Mallomonas pillula f. valdiviana Dürrschmidt

(Fig. 3G)

DISTRIBUTION. — Bipolar (Kristiansen & Vigna 1996; Kristiansen & Preisig 2007).

REMARKS

The scales of M. pillula f. valdiviana differ from the type form in having strong ribs forming a reticulum of irregularly-shaped meshes in the central area of the shield (Kristiansen 2002).