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Polychaeta source details
Halt, M. N.; Kupriyanova, E. K.; Cooper, S. J. B.; Rouse, G. W. (2009). Naming species with no morphological indicators: species status of Galeolaria caespitosa (Annelida : Serpulidae) inferred from nuclear and mitochondrial gene sequences and morphology. Invertebrate Systematics. 23, 205-222.
132138
10.1071/IS09003 [view]
Halt, M. N.; Kupriyanova, E. K.; Cooper, S. J. B.; Rouse, G. W.
2009
Naming species with no morphological indicators: species status of Galeolaria caespitosa (Annelida : Serpulidae) inferred from nuclear and mitochondrial gene sequences and morphology
Invertebrate Systematics
23, 205-222
Publication
World Polychaeta Database (WPolyDb)
Galeolaria caespitosa Lamarck, 1818 is an endemic, gregarious serpulid annelid, ubiquitous along the intertidal zone of southern Australia, occurring from Queensland to Western Australia. We sampled specimens across this range and utilised morphological features and sequences of mitochondrial (cytochrome-b) and nuclear (ITS2) markers to assess the taxonomic status of this morphospecies. No taxonomically significant morphological differences were observed across the range of G. caespitosa. However, the molecular data revealed the existence of the following two well supported clades that were also geographically concordant for the two markers: an eastern clade, consisting of New South Wales and southern Queensland samples, and a south-western group that encompassed samples from the rest of its range. The minimum pairwise distance between members of the two groups was more than 24% for cytochrome-b, with a maximum of 1% within-group variation. In addition, analysis of molecular variation showed a high proportion (97%) of the total variation distributed among the two groups, indicative of long-term isolation of the two clades. These results suggest that G. caespitosa comprises at least two cryptic species. Here, we discuss the merits of naming new Galeolaria species, given there were no consistent morphological differences detectable and the absence of details on the type locality for G. caespitosa. We conclude that a new species of Galeolaria is warranted and describe it here as G. gemineoa.
Australia
Galeolaria caespitosa Lamarck, 1818 (redescription)
Galeolaria decubens [auct. lapsus] accepted as Galeolaria caespitosa Lamarck, 1818 (basis of record) Galeolaria gemineoa Halt, Kupriyanova, Cooper & Rouse, 2009 (original description) Galeolaria hystrix Mörch, 1863 (additional source) Galeolaria tetracerus (Schmarda, 1861) accepted as Spirobranchus tetraceros (Schmarda, 1861) (additional source) Vermilia crenata (basis of record)
Neotype SAMA E3694, geounit Adelaide, identified as Galeolaria caespitosa Lamarck, 1818
Holotype SAMA SAM E3717, geounit New South Wales, identified as Galeolaria gemineoa Halt, Kupriyanova, Cooper & Rouse, 2009 Etymology authors: "gemineoa (Latin, feminine) is a combination of the word ‘gemina’ meaning twin kind (Latin, feminine), ... [details] Neotype South Australian Museum SAM E3694. Semaphore Jetty, Largs Bay, Semaphore, Greater Adelaide, South Australia, ... [details] Nomenclature for Vermilia crenata Inadvertent error in Halt et al (2009:217). Presumably Vermilia subcrenata Lamarck, 1818 was intended. There is ... [details] Type locality Original type from Australia, location not stated.. Halt et al (2009) comment that "Ten Hove and van den Hurk ... [details] Type locality Tweed Coasts Rd, Hastings Point, New South Wales, Australia, -28.3667, 153.5747 (28 22' S, 153 34' 29" E, noting ... [details] |