Polychaeta note details

Taxonomy
English
eng
Blake (2000) treated Leodamas as a full genus because of its heavy thoracic neuropodial spines, which differ from the narrow spines of Scoloplos. A morphology-based cladistic analysis indicated this was justified, however molecular support is not yet tested. Blake (2017) extended the number of species in Leodamas with several new combinations and three new species. His diagnosis of Scoloplos versus Leodamas hinges on relatively minor differences. These are that in Scoloplos thoracic neurochaetae include blunt, inconspicuous uncini, few in number, not in distinct rows; abdominal neuropodia with embedded, non-projecting acicula, and in Leodamas the thoracic neuropodial uncini are large, conspicuous, arranged in one to many distinct vertical rows, with accompanying capillaries few; abdominal neuropodia with projecting aciculae, either thin and inconspicuous or large. The problem is these are somewhat subjective gradational differences with some species (eg Scoloplos cylindrifer) not clearly belonging to either genus. Subsequently Zhadan (2020: 454) did not accept Blake's transfer of several Scoloplos (Blake's group B) to Leodamas in part because Scoloplos remained heterogeneous, and molecular support was lacking for the morphological differences noted by Blake. See Scoloplos (Leodamas) for a number of species not yet assigned to either genus.
Blake, James A. (2000). A new genus and species of polychaete worm (Family Orbiniidae) from methane seeps in the Gulf of Mexico, with a review of the systematics and phylogenetic interrelationships of the genera of Orbiniidae. <em>Cahiers de Biologie Marine.</em> 41(4): 435-450. available online at http://application.sb-roscoff.fr/cbm/ Available for editors  PDF available [request]

Blake, James A. (2017). Polychaeta Orbiniidae from Antarctica, the Southern Ocean, the Abyssal Pacific Ocean, and off South America. <em>Zootaxa.</em> 4218(1): 1-145 [monograph]. available online at http://www.biotaxa.org/Zootaxa/article/view/zootaxa.4218.1.1/25653 Available for editors  PDF available [request]

Zhadan, Anna. (2020). Review of Orbiniidae (Annelida, Sedentaria) from Australia. <em>Zootaxa.</em> 4860(4): 451-502. available online at https://www.biotaxa.org/Zootaxa/article/view/zootaxa.4860.4.1 Available for editors  PDF available [request]
Date
action
by
2013-01-13 02:59:21Z
created
2017-01-13 01:26:16Z
changed
2022-05-26 03:25:58Z
changed