Flabelligeridae de Saint-Joseph 1894

• Main Author: Salazar-Vallejo, Sergio I.
• Format: Text
• Language: unknown
• Published: Zenodo 2017
• Subjects: Biodiversity; Taxonomy; Animalia; Annelida; Polychaeta; Terebellida; Flabelligeridae; Antarctic; Pacific; Bergen; Manan; McIntosh; Flota; Eme; Annenkova; Antarc*; Arktis*
• Online Access: https://dx.doi.org/10.5281/zenodo.6051116; https://zenodo.org/record/6051116

Key to genera of Flabelligeridae de Saint-Joseph, 1894 1 Anterior end with chaetae; branchiae variable............................................................... 2 - Anterior end without chaetae or parapodia; branchiae in a single series (pelagic worms)............................................................................................ Poeobius Heath, 1930 (see Salazar-Vallejo 2008) 2(1) Cephalic cage exposed, well developed (chaetiger 1 with thick, rigid chaetae, at least twice as long as body width)........ 3 - Cephalic cage covered by tunic or poorly developed (chaetiger 1 with chaetae usually shorter than body width; if longer, then thin, flexible)........................................................................................ 17 3(2) Tunic thick, often covering most individual papillae, at least along anterior chaetigers............................... 4 - Tunic thin, most papillae visible, exposed................................................................. 9 4(3) Chaetiger 2 markedly longer than following ones, sometimes with a constriction towards its posterior margin............ 5 - Chaetiger 2 as long as neighbouring chaetigers.............................................................. 7 5(4) Tunic without sediment; all chaetigers with long multiarticulate spines; anterior end with one pair of trifid organs (pelagic worms)............................................ Buskiella McIntosh, 1885 (see Salazar-Vallejo & Zhadan 2007) - Tunic with sediment, sometimes with large tubercles; median and posterior chaetigers with short neurochaetae; anterior end with palps and branchiae, without trifid organs............................................................. 6 6(5) Anterior chaetigers (3–7) with pseudo-compound neurochaetae................................................................................................ Therochaeta Chamberlin, 1919 ( partim ) (see Salazar-Vallejo 2013a) - Anterior chaetigers (3–7) without pseudocompound neurochaetae, with anchylose hooks or multiarticulate chaetae.............................................................................. Paratherochaeta Salazar-Vallejo, 2013 7(4) Posterior chaetigers with articulate neurochaetae............................................................. 8 - Posterior chaetigers with anchylose neurochaetae, sometimes bifid, bidentate or subdistally expanded; tunic with variable amounts of sediment particles................................ Trophoniella Hartman, 1959 (see Salazar-Vallejo 2012c) 8(7) Tunic with sediment particles; median and posterior chaetigers with multiarticulate neurochaetae, often bidentate...................................................................... Piromis Kinberg, 1867 (see Salazar-Vallejo 2011b) - Tunic without sediment particles; median chaetigers with multiarticulate neurochaetae, posterior chaetigers with oligoarticu- late neurochaetae............................................ Pycnoderma Grube, 1877 (see Salazar-Vallejo 2011b) 9(3) Sediment particles concentrated into discrete shields or crusts................................................. 10 - Sediment particles not concentrated into discrete shields or crusts, sometimes forming sediment tubercles; body papillae vari- able............................................................................................... 12 10(9) Body papillae long, with or without sediment; anterior chaetigers with segments partly or totally covered by sediment particles.............................................. Therochaeta Chamberlin, 1919 ( partim ) (see Salazar-Vallejo 2013a) - Body papillae short, without sediment, anterior chaetigers with sediment particles arranged as a dorsal shield............ 11 11(10) Anterior chaetigers with pseudocompound neurochaetae; posterior region cylindrical with 2–4 neurochaetae in transverse series.................................................. Semiodera Chamberlin, 1919 (see Salazar-Vallejo 2012b) - Anterior chaetigers with multiarticulated neurochaetae; posterior region often depressed with 5–8 neurochaetae in longitudinal series..................................................................... Daylithos Salazar-Vallejo, 2012b 12(9) Median chaetigers with long multiarticulate neurospines...................................................................................................... Diplocirrus Haase, 1915 (see Salazar-Vallejo & Buizhinskaja 2011) - Median chaetigers with anchylose, falcate neurospines, may be very short........................................ 13 13(12) Median and posterior neurochaetae longer than papillae...................................................... 14 - Median and posterior neurochaetae small, as long as or shorter than papillae; papillae abundant, giving a velvet or granulose appearance; branchial filaments abundant, on two lateral peduncles..................................................................................................... Stylarioides delle Chiaje, 1830 (see Salazar-Vallejo 2011a) 14(13) Body papillae thin, abundant, giving a pilose appearance; 8–16 branchial filaments, sessile on branchial plate.................................................................... Ilyphagus Chamberlin, 1919 (see Salazar-Vallejo 2012d) - Body papillae thick, giving a tuberculate appearance, at least anteriorly.......................................... 15 15(14) Branchial plate with 8 filaments, sessile................................................................... 16 - Branchial plate with two branchial peduncles, each with many filaments in transverse series.................................................................................................... Treadwellius Salazar-Vallejo, 2011 16(15) Median neurochaetae falcate, blunt, shorter than body width.................................... Pherusa Oken, 1807 - Median neurochaetae foliose, tapered, as long as or longer than body width.............. Lamispina Salazar-Vallejo, 2014 17(2) Chaetiger 1 with chaetae in a long, almost continuous series; neurochaetae oligo-articulate with falcate crest............ 18 - Chaetiger 1 with chaetae in short separate bundles; median neurochaetae anchylose................................ 23 18(17) Dorsal papillae completely covered by a more or less continuous tunic.......................................... 19 - Dorsal papillae visible, individually or forming large sediment particles, not covered by tunic........................ 22 19(18) Notochaetae as long as body width or shorter, articulate (at least along half their length); successive notopodia positioned at the same level; cephalic cage chaetae covered by a thin tunic or by series of papillae, without thick tunic.................. 20 - Notochaetae twice as long as body width (including tunic), most anchylose (articles restricted to chaetal distal regions); suc- cessive notopodia arranged in triads, in different level; cephalic cage chaetae covered by a thick tunic........................................................................................... Flabegraviera Salazar-Vallejo, 2012a 20(19) Neuropodial hooks with thick, falcate, entire crests.......................................................... 21 - Neuropodial hooks with thin, tapered mucronate crests, apparently articulate; body with a thin tunic.............................................................................................. Annenkova Salazar-Vallejo, 2012a 21(20) Median notopodia dorsolateral or lateral; anterior end truncate......... Flabelligera Sars, 1829 (see Salazar-Vallejo 2012a) - Median notopodia ventrolateral; anterior end tapered............................. Flabehlersia Salazar-Vallejo, 2012a 22(18) Notopodial lobes perpendicular to body axis, large, covering notochaetae; median neuropodia lateral........................................................................... Flabelliderma Hartman, 1969 (see Salazar-Vallejo 2007) - Notopodial lobes longitudinal to body axis, short, fan-shaped, not covering notochaetae; median neuropodia ventral............................................................................... Flabesymbios Salazar-Vallejo, 2012a 23(17) Neurochaetae aristate spines; branchiae usually abundant filaments......................... Bradabyssa Hartman, 1967 - Neurochaetae blunt, falcate spines; branchiae only 8 cirriform filaments......................... Brada Stimpson, 1853 : Published as part of Salazar-Vallejo, Sergio I., 2017, Revision of Brada Stimpson, 1853, and Bradabyssa Hartman, 1967 (Annelida, Flabelligeridae), pp. 1-98 in Zootaxa 4343 (1) on pages 7-8, DOI: 10.11646/zootaxa.4343.1.1, http://zenodo.org/record/1041210 : {"references": ["de Saint-Joseph, A. (1894) Les annelides polychetes des cotes de Dinard, troisieme partie (Nephtydiens - Serpuliens). Annales des Sciences Naturelles, Zoologie, 7 eme Serie, 17, 1 - 395. 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