Cabira incerta Webster, 1879

Ribeiro, Rannyele Passos, Barbosa, Aline Da Cruz, Freitas, Roberta, Zanol, Joana, Glasby, Christopher J. & Ruta, Christine, 2020, Pilargidae (Annelida: Phyllodocida) from coastal and deep waters of the Southwestern Atlantic, with descriptions of two new species, Zootaxa 4878 (1), pp. 56-76 : 63-64

publication ID

https://doi.org/ 10.11646/zootaxa.4878.1.2

publication LSID

lsid:zoobank.org:pub:29DB126D-4751-433B-89BC-EFDD421368F7

DOI

https://doi.org/10.5281/zenodo.4574121

persistent identifier

https://treatment.plazi.org/id/03D587F5-FFC1-FFAB-FF22-FE1EB999FDD0

treatment provided by

Plazi

scientific name

Cabira incerta Webster, 1879
status

 

Cabira incerta Webster, 1879 View in CoL

Figure 5 View FIGURE 5 A–E

Cabira incerta Webster, 1879: 67 View in CoL , pl. 11, figs 155–157. – Pettibone 1966: 178, figs 11a–c, 12a–e.

Ancistrosyllis incerta Fauvel 1920: 211 .

Material examined. BRAZIL: Campos Basin : 21º40’23.730”S, 40º58’23.765”W, 18 m, one specimen, 19.vii.2009 (MNRJP-002716); 21º55’50.186”S, 40º25’59.434”W, 47 m, one specimen, 23.vii.2009 (MNRJP-002717); 21º59’3.751”S, 40º25’10.170”W, 52 m, two specimens, 25.ii.2009 (MNRJP-002718); 22º45’49.603”S, 41º45’34.188”W, 53 m, two specimens, 16.vii.2009 (MNRJP-002719); 22º7’43,550”S, 40º18’47,006”W, 72 m, one specimen, 5.vii.2009 (MNRJP-002720); 21º23’37.611”S, 40º15’38.642”W, 89m, two specimens, 21.vii.2009 (MNRJP-002721); 21º42’54.432”S, 40º10’14.096”W, 98 m, one specimen, 7.vii.2009 (MNRJP-002722); 23º6’52.268”S, 41º55’13.122”W, 110 m, one specimen, 15.vii.2009 (MNRJP-002723). State of Espírito Santo: Peroá Cangoá GoogleMaps : 19°32’00”S, 39°35’00”W, one specimen ( IBUFRJ0421 ) GoogleMaps .

Description. Fixed specimens whitish. Largest individual with 92 chaetigers, 30 mm length and 0.40 mm width (at widest point, including parapodia) (MNRJP-002720). Body cylindrical with smooth surface. Prostomium conical with lateral antennae diminutive inserted on the posterior region ( Fig. 5A, C, E View FIGURE 5 ); median antenna and eyes absent. Two biarticulated palps, palpophore large and palpostyle diminutive ( Fig. 5C View FIGURE 5 ). Proboscis with spines distributed in longitudinal series, on the anterior end. Peristomium distinctly set off from prostomium; with two pairs of tentacular cirri 1.3x longer than lateral antennae ( Fig. 5E View FIGURE 5 ). Parapodia inconspicuous. Dorsal and ventral cirri short, papilliform, equal in length. Ventral cirri from third to last chaetiger. Notopodial hook from seventh to last chaetiger ( Fig. 5A, B, D View FIGURE 5 ). Neurochaetae with bidentate tips, from chaetigers 2–4. Pygidium bilobed; cirri absent.

Distribution. Atlantic Ocean—USA, Chesapeake Bay, ( Pettibone 1966); Off Florida and Texas, Gulf of Mexico ( Wolf 1984); Brazil, specimens examined in this study ( Muniz et al. 1996; Paiva 1993); Uruguay ( Salazar-Vallejo & Orensanz 1991). Pacific Ocean—Costa Rica, Gulf of Nicoya ( Dean 1998).

Remarks. Cabira has five described species: Cabira bohajensis Britaev & Saphronova, 1981 from Japan; Cabira brevicirris ( Rangarajan 1964) , from India; Cabira pilargiformis ( Uschakov & Wu 1962) , from the Yellow Sea, China; Cabira rangarajani Mandal, Harkantra and Salazar-Vallejo, 2007 , from India; and Cabira incerta , from the Gulf of Mexico, USA. Cabira incerta is the only species of the genus recorded from the Atlantic and Pacific coasts of the American continent. No morphological differences were found among examined specimens. Differences were observed between the present specimens and those from the Gulf of Mexico ( Wolf 1984). Those specimens have notopodial hooks from chaetigers 7–9 and neurochaetae unidentate, while specimens of this study have the first notopodial hooks from chaetiger 7 and neurochaetae bidentate. However, all characters observed in our specimens match the redescription of Cabira incerta by Pettibone (1966).

Kingdom

Animalia

Phylum

Annelida

Class

Polychaeta

Order

Phyllodocida

Family

Pilargidae

Genus

Cabira

Loc

Cabira incerta Webster, 1879

Ribeiro, Rannyele Passos, Barbosa, Aline Da Cruz, Freitas, Roberta, Zanol, Joana, Glasby, Christopher J. & Ruta, Christine 2020
2020
Loc

Ancistrosyllis incerta

Fauvel, P. 1920: 211
1920
Loc

Cabira incerta

Pettibone, M. H. 1966: 178
Webster, H. E. 1879: 67
1879
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