Caulobothrium tetrascaphium Riser, 1955

Caira, Janine N. & Jensen, Kirsten, 2021, Two new species of Caulobothrium (Cestoda: “ Tetraphyllidea ”) from the duckbill eagle ray, Aetomylaeus bovinus (Myliobatiformes: Myliobatidae), off Senegal with new insights on morphological features of the genus, Zootaxa 4903 (1), pp. 127-139 : 136

Caulobothrium tetrascaphium Riser, 1955

( Fig. 6A, B )

Examination of the apical region of a bothridium of C. tetrascaphium with SEM ( Fig. 6A ), as well as frontal sections of a second bothridium ( Fig. 6B ) (LRP No. 10256) confirms that the structure on the anterior margin of each bothridium of this species is a sucker, rather than a loculus, following the criteria of Caira et al. (1999). Most importantly, the posterior margin of this structure is rounded, rather than straight.

Figures

FIGURE 6. Apical suckers in Caulobothrium tetrascaphium and Caulobothrium pedunculatum. A. Scanning electron micrograph of apical sucker of C. tetrascaphium. B. Light micrograph of frontal section through apical sucker of C. tetrascaphium (LRP No. 10256). C. Light micrograph of apical sucker of Caulobothrium pedunculatum (LRP No. 3914).