Iospilidae Bergstrom 1914

• Main Authors: Jiménez-Cueto, Soledad, Suárez-Morales, Eduardo, Salazar-Vallejo, Sergio I.
• Format: Text
• Language: unknown
• Published: Zenodo 2006
• Subjects: Biodiversity; Taxonomy; Animalia; Annelida; Polychaeta; Phyllodocida; Iospilidae; Morales; Jiménez; Suarez; South Atlantic Ocean
• Online Access: https://dx.doi.org/10.5281/zenodo.6262586; https://zenodo.org/record/6262586

Family Iospilidae Bergström, 1914 Diagnosis Small holoplanktic forms with body elongated (often posteriorly incomplete). Prostomium rounded, without antennae; eyes dorsal, paired or absent; palps small. First two segments fused, with two pairs of small tentacular cirri. Following setigers (2–10) with reduced parapodia, dorsal and ventral cirri sometimes absent on setigers 1 and 2. Remaining setigers with parapodia with short dorsal and ventral cirri, long setal lobes and compound spinigers. Pharynx eversible, unarmed or with two falcate, strong mandibles. Pygidium rounded or plate­shaped, ciliated, without appendages. All species with branched chromatophores, either intensely or weakly pigmented. Remarks While dealing with some taxonomic problems in other holoplanktic taxa, Støp­Bøwitz (1984) regarded the Pontodoridae, Iospilidae, and Lopadorrhynchidae, as pelagic families without “many difficult systematic problems”. Further, Tebble (1958) made an early warning against the cosmopolitan distribution of pelagic polychaetes by stating that “a correlation has been found to exist between the distribution of species and the movements of water masses”. However, the fragility and scarcity of specimens, together with shallow taxonomic descriptions, have hindered the clarification of the distributional status of many taxa of pelagic polychaetes, including the Iospilidae. Støp­Bowitz (1996) recognized three iospilid genera, Phalacrophorus Greeff, 1879, with two species ( P. pictus Greeff, 1879 and P. u n i f o r m i s Reibisch, 1895), and two monotypic genera: Iospilus Viguier, 1886 ( I. phalacroides Viguier, 1886), and Pariospilus Viguier, 1911 ( P. affinis Viguier, 1911). The monotypic genus Iospilospis ( I. antillensis ) described by Augener (1922) was regarded as a synonym of P. u n i f o r m i s (Dales & Peter 1972). Three of these four known species of Iospilidae were recorded in the surveyed area. : Published as part of Jiménez-Cueto, Soledad, Suárez-Morales, Eduardo & Salazar-Vallejo, Sergio I., 2006, Iospilids (Polychaeta: Iospilidae) from the northwest Caribbean Sea, with observations on reproductive structures, pp. 53-68 in Zootaxa 1211 on pages 54-55, DOI: 10.5281/zenodo.172474 : {"references": ["Stop-Bowitz, C. (1984) A short note on the problems with systematics of some pelagic polychaetes. In: Hutchings, P. A. (Ed.), Proceedings of the First International Polychaete Conference, Sydney. Linnean Society of New South Wales, Sydney, pp. 86 - 90.", "Tebble, N. (1958) Distribution of pelagic polychaetes in the South Atlantic Ocean. Nature, 182, 166 - 167.", "Stop-Bowitz, C. (1996) Polychaeta. In: Gasca, R. & Suarez, E. (Eds.), Introduccion al Estudio del Zooplancton Marino. El Colegio de la Frontera Sur (ECOSUR) / CONACYT, Mexico City, pp. 149 - 189", "Greeff, R. (1879) Ueber pelagische Anneliden von der Kuste de Canarischen Inseln. Zeitschrift fur wissenschaflichte Zoologie, 32, 33 - 132.", "Reibisch, J. (1895) Die pelagischen Phyllodociden und Typhloscoleciden der Plankton-Expedition. Ergebnisse der Plankton-Expedition der Humboldt-Stiftung, Bd. II, 1 - 63.", "Viguier, C. (1911) Nouvelles etudes sur le plankton de la Baie d'Alger. Annals des Sciences Naturelles, Paris, serie 9, 13, 187 - 267.", "Augener, H. (1922) Ueber litorale Polychaeten von Westindien. Sitzunbericht der Gesellschaft Naturforschender Freunde, Berlin 1922, 38 - 63.", "Dales, R. P. & Peter, R. (1972) A synopsis of the pelagic polychaetes. Journal of Natural History, 6, 55 - 92."]}