Dysponetus Levinsen 1879

• Main Author: Darbyshire, Teresa
• Format: Text
• Language: unknown
• Published: Zenodo 2012
• Subjects: Biodiversity; Taxonomy; Animalia; Annelida; Polychaeta; Phyllodocida; Chrysopetalidae; Dysponetus; Tristan; Benedict; Cervantes; Darbyshire; North Atlantic; North East Atlantic
• Online Access: https://dx.doi.org/10.5281/zenodo.3858927; https://zenodo.org/record/3858927

Key to Dysponetus species 1 Ventral tentacular cirri absent on segment 1 ………………………………………………………2 – Ventral tentacular cirri present on segment 1 ………………………………………………………6 2 Elongate palps; 4 eyes …………………………………… D. bulbosus* Hartmann-Schröder, 1982 – Sphaerical palps; 2 eyes or eyes absent ……………………………………………………………3 3 Anterior median antenna; double mouth appendage on lower lip; 2 eyes ………………………… ……………………………………………………………… D. hebes (Webster & Benedict, 1887) – Dorsal median antenna; eyes absent ………………………………………………………………4 4 Ventral tentacular cirri present on segment 2 ………………………… D. gracilis Hartman, 1965 – Ventral tentacular cirri absent on segment 2 ………………………………………………………5 5 Mouth appendage absent; paleae present among notochaetae …………………………………… ………………………………………………………… D. paleophorus Hartmann-Schröder, 1974 – Double mouth appendage on lower lip; paleae absent …………… D. pygmaeus Levinsen, 1879 6 Mouth appendage absent …………………………………………………………………………7 – Single mouth appendage on lower lip ……………………………………………………………8 7 Elongate palps, ventral tentacular cirri present on segment 2 …… D. hesionides Böggemann, 2009 – Sphaerical palps, ventral tentacular cirri absent on segment 2 …… D. profundus Böggemann, 2009 8 Eyes absent, ventral cirri present on segment 3 …………………… D. caecus (Langerhans, 1880) – Eyes present, ventral cirri absent on segment 3 …………………………………………………9 9 16 or less notochaetae in mid-body segments ………… D. bulbosus* Hartmann-Schröder, 1982 – 20 or more notochaetae in mid-body segments …………………………………………………10 10 Ventral tentacular cirri absent on segment 2 …………………………… D. bidentatus Day, 1954 – Ventral tentacular cirri present on segment 2 ……………………………………………………11 11 Few neurochaetae, only 9–13 in mid-body segments …………… D. bipapillatus Dahlgren, 1996 – Numerous neurochaetae in mid-body segments, 19 or more …………………………………12 12 Small body size, 2–3 mm; 19–22 neurochaetae ………………… D. macroculatus Dahlgren, 1996 – Large body size,> 3 mm; 20–26 neurochaetae …………………… D. Joeli Olivier et al. , 2012 * Descriptions of D. bulbosus (Hartmann-Schröder 1982, 1986) contradict each other over the presence or absence of ventral cirri on each of the first few segments. For this reason, D. bulbosus is included twice in the key to account for the discrepancy in descriptions. Dysponetus bulbosus will be reviewed in a forthcoming paper. : Published as part of Darbyshire, Teresa, 2012, Re-description of Dysponetus joeli Olivier et al., 2012 (Polychaeta, Chrysopetalidae), with a new key to species of the genus, pp. 1-9 in European Journal of Taxonomy 27 on pages 6-7, DOI: 10.5852/ejt.2012.27, http://zenodo.org/record/3858428 : {"references": ["Hartmann-Schroder G. 1982. Zur Kenntis des Eulitorals der australischen Kusten unter besonderer Berucksichtigung der Polychaeten und Ostracoden. Teil 8. Die Polychaeten der subtropisch-antiborealen Westkuste Australiens (zwischen Cervantes im Norden und Cape Naturaliste im Suden). Mitteilungen aus dem hamburgischen zoologischen Museum und Institut 79: 51 - 118.", "Webster H. E. & Benedict J. E. 1887. The Annelida Chaetopoda, from Eastport, Maine. Annual Report of the United States Commission of Fish and Fisheries, Washington, vol. for 1885: 707 - 758, pls 1 - 8. http: // docs. lib. noaa. gov / rescue / cof / COF _ 1885. PDF", "Hartman O. 1965. Deep-water benthic polychaetous annelids off New England to Bermuda and other North Atlantic areas. Occasional Papers of the Allan Hancock Foundation 28: 1 - 378.", "Hartmann-Schroder G. 1974. Polychaeten von Expeditionen der \" Anton Dohrn \" in Nordsee und Skagerrak. Veroffentlichungen des Instituts fur Meeresforschung in Bremerhaven 14: 169 - 274.", "Levinsen G. M. R. 1879. Om to nye Slaegter af arctiske chaetopode Annelider. 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(Polychaeta: Chrysopetalidae) from the north-east Atlantic, with a cladistic analysis of the genus and a key to species. Journal of the Marine Biological Association of the UK 92: 989 - 996. http: // dx. doi. org / 10.1017 / S 0025315412000562", "Hartmann-Schroder G. 1986. Zur Kenntis des Eulitorals der australischen Kusten unter besonderer Berucksichtigung der Polychaeten und Ostracoden. Teil 12. Die Polychaeten der antiborealen Sudkuste Australiens (zwischen Wallaroo im Westen und Port MacDonnell im Osten). Mitteilungen aus dem hamburgischen zoologischen Museum und Institut 83: 31 - 70."]}