achaetous

== English == === Adjective === achaetous (not comparable) (zoology) Without setae Achaetous gill-less tails are a typical trait for the juvenile stage of development in species of Arenicolidae (phylum Annelida). ==== Synonyms ==== asetigerous === References === Truck, T (2006). Progenetic species in polychaetes (Annelida). Integrative and Comparative Biology; 46, 558-568.