In revising the Australian pilargids we came across this overlooked species. Although it is currently included as a valid species of Ancistrosyllis in the WoRMS database, my view is that it should regarded as Pilargidae incertae sedis, because it could equally belong to genus Cabira. Although Korschelt clearly shows a median antenna, which is suggestive of Ancistrosyllis (but not all Ancistrosyllis have a median antenna), the distinguishing features that separate Ancistrosyllis from Cabira (degree of dorso-ventral body compression; peristomium sharply divided from segment 1 in Cabira but not in Ancistrosyllis; and possibly pharynx shape - highly muscular sometimes long and looped in Ancistrosyllis), may not have developed in a juvenile. Lastly, Korschelt illustrates four lobes in the hind brain, which is also not helpful in identifying the genus as Cabira reportedly has 3 and Ancistrosyllis has 5.
From: annelida-bounces from oat.bio.indiana.edu [mailto:annelida-bounces from oat.bio.indiana.edu] On Behalf Of Barbara Mikac
Sent: Friday, 12 April 2013 1:43 AM
To: Annelida mailing list
Subject: [Annelida] Ancistrosyllis cingulata
I need help on the validity of the species Ancistrosyllis cingulata
(Korschelt, 1893). The species was described from the bay of Trieste
(northern Adriatic) by Korschelt (1983) but from the larval planctonic
form, as Harpochaeta cingulata, and at that time taught to belong to
Syllids. Ehlers (1908) thought that Harpochaeta is synonymous with
Ancistrosyllis. Fauvel (1923) considered Harpochaeta as synonymous
with Ancistrosyllis and gave drawings presented by Korschet (1983). In
the Adriatic Sea the species was later reported only by Aleffi et al.
(1987-1988) and Požar-Domac, 1994. Požar-Domac (1994) publication is
the catalogue of the Adriatic polychaetes and obviously refers to the
Korschelt (1983) finding or eventually to Aleffi et al. (1987-1988).
The species is never mentioned in the further lists of
Pilargids/polychaetes of the Adriatic Sea (Castelli, 1991; Cantone,
2003; Castelli et al., 2008) nor is listed in the Mediterranean fauna
(Coll et al., 2010) and I am wondering if this species is valid? Was
it ever described by the adult forms after its initial description?
Various internet links I've found always indicated that it is a valid
species. But I cannot find any publication where this species is
re-described or reported for the Adriatic Sea or any other area. Then
I suppose that the species is not valid, and that Adriatic reports
actually belong to Ancistrosyllis groenlandica (or possibly some other
Ancistrosyllis species) but certainly not to A. cingulata.
What do you think?
Barbara Mikac, PhD
Higher research assistant
Center for Marine Research
Ruđer Bošković Institute
Giordana Paliaga 5
e-mail: barbara.mikac from cim.irb.hrhttp://www.irb.hr/eng/People/Barbara-Mikac
Consiglio Nazionale delle Ricerche
Istituto per l’Ambiente Marino Costiero
Laboratorio di Ecologia Marina
Via G. da Verrazzano 17
91014 Castellammare del Golfo (TP)
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