Catanema schiemeri

Pröts, Philipp, Novotny-Diermayr, Veronica & Ott, Jörg A., 2024, A novel three-part pharynx and its parallel evolution within symbiotic marine nematodes (Desmodoroidea, Stilbonematinae), Organisms Diversity & Evolution 24 (3), pp. 353-373 : 361

Catanema schiemeri and C. sp.

The spherical to slightly heart-shaped posterior bulbus accounts for roughly the same amount of the pharynx total length and is mainly devoid of musculature in both species ( Fig. 1c; Table 1; Figs. 6a–c, e–h and 13a).