Figure 3
Nanaloricus sp. Light micrography of an adult stage (A) and body musculature visualized by fluorescently-labeled phalloidin staining and CLSM (B). Anterior faces upwards in both aspects. A: Note the almost fully retracted introvert and all scalids projecting forward, while the trichoscalids are oriented posteriorly. B: Dorsal view. The net-like thin musculature is located very close to the neck circular muscle. Note, as well, that the pharyngeal bulb musculature occupies a medial region within the abdominal cavity. Abbreviations: *, pharyngeal bulb musculature; an, anus; atI-V, abdominal transverse muscles; btr, buccal tube retractors; dl, dorsal longitudinal retractor muscle; lo, lorica; mcr, mouth cone retractors; mt, mouth tube; nc, neck circular muscle; nl, net-like thin muscles; pa, pre-pharyngeal apparatus; ss, spinoscalid; sp, short posterior longitudinal muscles; tl, thin longitudinal muscles; ts, trichoscalid; vl, ventral longitudinal retractor muscle; arrow, posterior short curved muscle; arrowheads, introvert posterior ring muscle.