Additions to the description, reproduction and systematic position of the enigmatic species Acritagasyllis longichaetosus Lucas, San Martín & Sikorski, 2010 (Annelida: Phyllodocida: Syllidae)

We present some additional information to Acritagasyllis longichaetosus Lucas, San Martín & Sikorski 2010, the only representative of an enigmatic genus of Syllidae from subpolar areas off Norway, based on two newly found specimens and one male and another female stolons. The armature of the pha...

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Bibliographic Details
Published in:Journal of the Marine Biological Association of the United Kingdom 2016-12, Vol.96 (8), p.1709-1716
Main Authors: Rivolta, Alessandra, San Martín, Guillermo, Sikorski, Andrey
Format: Article
Language:English
Subjects:
Annelida
Autolytinae
Marine
Morphology
Phylogenetics
Syllidae
Teeth
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Summary:We present some additional information to Acritagasyllis longichaetosus Lucas, San Martín & Sikorski 2010, the only representative of an enigmatic genus of Syllidae from subpolar areas off Norway, based on two newly found specimens and one male and another female stolons. The armature of the pharynx was incorrectly interpreted in the original description, having in fact a trepan instead of a single pharyngeal tooth as originally described. The reproductive stolons are herein described for the first time. With this new information we performed a maximum parsimony phylogenetic analysis that placed this genus within the subfamily Autolytinae, despite its peculiar morphological characteristics. For this reason, we propose a new diagnosis to the genus Acritagasyllis as well as a modified diagnosis of the subfamily Autolytinae.
ISSN:0025-3154
1469-7769
DOI:10.1017/S0025315415002118