Sipunculus (Sipunculus) cf. polymyotus, Fisher, 1947

Silva-Morales, Itzahí & Gómez-Vásquez, Julio D., 2021, First records and two new species of sipunculans (Sipuncula) from the Southern Mexican Pacific, European Journal of Taxonomy 740 (1), pp. 77-117 : 117

Sipunculus (Sipunculus) cf. polymyotus

in this paper: Figs 1A–E , 2A–D (Boquilla Beach, Puerto Ángel, sandy substrate, 5 m).

Figures

Fig. 1. Sipunculus cf. polymyotus Fisher, 1947 from Oaxaca, Mexico lateral view. A. External morphology. B. Introvert. C. Microbivalve associated with introvert papillae. D. Triangular introvert papillae. E. Peripheral tentacles stained in methyl blue. Abbreviations: Dlob = dorsal lobe; Vlob = ventral lobe.

Fig. 2. Sipunculus cf. polymyotus Fisher, 1947 from Oaxaca, Mexico. A. Internal morphology. B. Digitate processes of brain. C. Nephridium. D. Anus (black row indicates the prominences of the anus). Abbreviations: DRM = dorsal retractor muscles; I = intestine; LMB = longitudinal muscle bands; N = nephridium; PEL = post esophageal loop; VRM = ventral retractor muscles.