Pseudoscalibregma Ashworth 1901 ...

• Main Author: Blake, James A.
• Format: Text
• Language: unknown
• Published: Zenodo 2015
• Subjects: Biodiversity; Taxonomy; Animalia; Annelida; Polychaeta; Scalibregmatidae; Pseudoscalibregma; Antarctic; Antarctic Peninsula; Ashworth; Antarc*
• Online Access: https://dx.doi.org/10.5281/zenodo.6102454; https://zenodo.org/doi/10.5281/zenodo.6102454

Genus Pseudoscalibregma Ashworth, 1901 Type-species: Scalibregma parvum Hansen, 1879. Diagnosis. Body elongate, arenicoliform. Prostomium T-shaped with lateral horns. Peristomium achaetous, surrounding prostomium dorsally and forming upper and lower lips of mouth ventrally. Parapodia of posterior segments with dorsal and ventral cirri; interramal papillae present; postsetal lamellae absent. Branchiae absent. Setae include capillaries, lyrate setae, and sometimes few inconspicuous spinous setae among capillaries of setigers 1‒2, blunt, pointed, or bifurcated, representing homologues of lyrate setae; large conspicuous spines absent. Pygidium with long anal cirri. Remarks. Apart from a more variable morphology of dorsal and ventral cirri, the only character that separates Pseudoscalibregma from Scalibregma is the absence of branchiae. The presence of short spinous setae in the first 1‒2 setigers as occurs in species of Scalibregma was confirmed by Imajima (2009) as part of his description of P. orientalis ... : Published as part of Blake, James A., 2015, New species of Scalibregmatidae (Annelida, Polychaeta) from the East Antarctic Peninsula including a description of the ecology and post-larval development of species of Scalibregma and Oligobregma, pp. 57-93 in Zootaxa 4033 (1) on pages 74-75, DOI: 10.11646/zootaxa.4033.1.3, http://zenodo.org/record/289810 ...