Collotheca ferox (Penard)

Meksuwan, Phuripong, Pholpunthin, Pornsilp & Segers, Hendrik, 2013, The Collothecidae (Rotifera, Collothecacea) of Thailand, with the description of a new species and an illustrated key to the Southeast Asian fauna, ZooKeys 315, pp. 1-16 : 3

Collotheca ferox (Penard)

Remarks.

The morphological characters of our specimens agree closely with the description of the species by Penard (1914): the corona of the specimens is more than twice as broad as its trunk and bears five broad lobes (Fig. 2A, B, 4J). The dorsal lobe tip is relatively large and rounded anteriorly; the lateral lobes are intermediate in size whereas the triangular ventral lobes are relatively small and are set close together. The features of the ventral lobe are unique to this species and prevent confusion with other five-lobed species of the genus. Our photographs of living specimens and trophi of Collotheca ferox confirm, in particular, the unique features of the ventral corona lobes illustrated by Penard (1914).