Ancistrosyllis McIntosh, 1878

Plathong, Sakanan, Plathong, Jintana & Dean, Harlan K., 2022, Two new species of Ancistrosyllis McIntosh, 1878 (Annelida: Pilargidae) from the Gulf of Thailand, Western Pacific, Zootaxa 5128 (2), pp. 195-210 : 200

Genus Ancistrosyllis McIntosh, 1878

Diagnosis (after Glasby & Salazar-Vallejo 2022). Pilargids with body depressed, integument papillose to verrucose, present on both segmental and nonsegmental regions. Zero to three antennae. Palps unfused, biarticulated, palpostyle minute. Paired ventrolateral palpal papillae present. Pharynx distally with terminal papillae (or absent); proximally smooth or, rarely, with denticles. Two pairs of tentacular cirri. Dorsal and ventral cirri digitate to lobate. Notochaetae are hooks, starting from chaetigers 3 to 13 and continuing throughout body. Neurochaetae smooth, or spinulose capillaries, often with bidentate tips. Free living in sediments from intertidal to deep sea, or commensal with other invertebrates.