FIGURE 21 in Definition of families, subfamilies, genera and subgenera of the Eutardigrada, and keys to their identification

FIGURE 21. Bucco-pharyngeal apparatuses of the Macrobiotus model, Macrobiotus type. A, of Macrobiotus; B, of Famelobiotus; C, of Paramacrobiotus. tr = transverse ridges; tr1 = anterior system of transverse ridges; tr2 = posterior system of transverse ridges. (A, from Pilato & Binda 1983b; B, from Pilato & Lisi, 2004a; C, from Binda & Pilato, 2001).