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NameSendall, Kelly; Salazar-Vallejo, Sergio. 2013. Revision of Sternaspis Otto, 1821 (Polychaeta, Sternaspidae). ZooKeys 286(0): 1-74
DOI10.3897/zookeys.286.4438 [view]
Type Publication
NoteWorld Polychaeta Database (WPolyDb). Open access journal
AbstractSternaspid polychaetes are common and often abundant in soft bottoms in the world oceans. Some authors suggest that only one species should be recognized, whereas others regard a few species as widely distributed in many seas and variable depths from the low intertidal to about 4400 m. There are some problems with species delineation and the distinctive ventro-caudal shield has been disregarded or barely used for identifying species. In order to clarify these issues, the ventral shield is evaluated in specimens from the same locality and its diagnostic potential is confirmed. On this basis, a revision of Sternaspis Otto, 1821 (Polychaeta: Sternaspidae) is presented based upon type materials, or material collected from type localities. The sternaspid body, introvert hooks and shield show three distinct patterns, two genera have seven abdominal segments and tapered introvert hooks, and one genus has eight abdominal segments and spatulate introvert hooks. The ventro-caudal shield has three different patterns: stiff with ribs, and sometimes concentric lines, stiff with feebly-defined ribs but no concentric lines, and soft with firmly adhered sediment particles. Sternaspis is restricted to include species with seven abdominal segments, falcate introvert hooks, and stiff shields, often exhibiting radial ribs, concentric lines or both. Sternaspis includes, besides the type species, S. thalassemoides Otto, 1821 from the Mediterranean Sea, S. affinis Stimpson, 1864 from the Northeastern Pacific, S. africana Augener, 1918, stat. n. from Western Africa, S. andamanensis sp. n. from the Andaman Sea, S. costata von Marenzeller, 1879 from Japan, S. fossor Stimpson, 1853 from the Northwestern Atlantic, S. islandica Malmgren, 1867 from Iceland, S. maior Chamberlin, 1919 from the Gulf of California, S. princeps Selenka, 1885 from New Zealand, S. rietschi Caullery, 1944 from abyssal depths around Indonesia, S. scutata (Ranzani, 1817) from the Mediterranean Sea, S. spinosa Sluiter, 1882 from Indonesia, and S. thorsoni sp. n. from the Iranian Gulf. Two genera are newly proposed to incorporate the remaining species: Caulleryaspis and Petersenaspis. Caulleryaspis gen. n. is defined by the presence of falcate introvert hooks, seven abdominal segments, and soft shields with sediment particles firmly adhered on them; it includes two species: C. gudmundssoni sp. n. from Iceland and C. laevis (Caullery, 1944) comb. n. from Indonesia. Petersenaspis gen. n. is defined by the presence of spatulate introvert hooks, eight abdominal segments, and stiff shields with poorly defined ribs but no concentric line; it includes P. capillata (Nonato, 1966) from Brazil and P. palpallatoci sp. n. from the Philippines. Neotypes are proposed for eight species: S. thalassemoides, S. affinis, S. africana, S. costata, S. fossor, S. maior, S. scutata and S. spinosa, to stabilize these species-group names, and a lectotype is designated for S. laevis which is transferred to Caulleryaspis gen. n. The geographic range of most species appears to be much smaller than previously indicated, and for some species additional material in good condition is needed to clarify their distributions. Keys to genera and to all species are also included.
Taxonomic
term
Polychaeta
Taxa
(24)
Checked: verified by a taxonomic editorCaulleryaspis Sendall & Salazar-Vallejo, 2013 (original description)
Checked: verified by a taxonomic editorCaulleryaspis gudmundssoni Sendall & Salazar-Vallejo, 2013 (original description)
Checked: verified by a taxonomic editorPetersenaspis Sendall & Salazar-Vallejo, 2013 (original description)
Checked: verified by a taxonomic editorPetersenaspis capillata (Nonato, 1966) (original description)
Checked: verified by a taxonomic editorPetersenaspis palpallatoci Sendall & Salazar-Vallejo, 2013 (original description)
Checked: verified by a taxonomic editorSternaspidae Carus, 1863 (identification resource)
Checked: verified by a taxonomic editorSternaspis Otto, 1821 (taxonomy source)
Checked: verified by a taxonomic editorSternaspis affinis Stimpson, 1864 (redescription)
Checked: verified by a taxonomic editorSternaspis africana Augener, 1918 (redescription)
Checked: verified by a taxonomic editorSternaspis andamanensis Sendall & Salazar-Vallejo, 2013 (original description)
Checked: verified by a taxonomic editorSternaspis assimilis Malmgren, 1867 accepted as Checked: verified by a taxonomic editorSternaspis thalassemoides Otto, 1821 (source of synonymy)
Checked: verified by a taxonomic editorSternaspis costata Marenzeller, 1879 (status source)
Checked: verified by a taxonomic editorSternaspis fossor Stimpson, 1854 (redescription)
Checked: verified by a taxonomic editorSternaspis fossor africana Augener, 1918 accepted as Checked: verified by a taxonomic editorSternaspis africana Augener, 1918 (taxonomy source)
Checked: verified by a taxonomic editorSternaspis islandica Malmgren, 1867 (redescription)
Checked: verified by a taxonomic editorSternaspis laevis Caullery, 1944 accepted as Checked: verified by a taxonomic editorCaulleryaspis laevis (Caullery, 1944) (new combination reference)
Checked: verified by a taxonomic editorSternaspis maior Chamberlin, 1919 (redescription)
Checked: verified by a taxonomic editorSternaspis princeps Selenka, 1885 (redescription)
Checked: verified by a taxonomic editorSternaspis rietschi Caullery, 1944 (redescription)
Checked: verified by a taxonomic editorSternaspis scutata Ranzani, 1817 (redescription)
Checked: verified by a taxonomic editorSternaspis spinosa Sluiter, 1882 (redescription)
Checked: verified by a taxonomic editorSternaspis thalassemoides Otto, 1821 (status source)
Checked: verified by a taxonomic editorSternaspis thorsoni Sendall & Salazar-Vallejo, 2013 (original description)
Checked: verified by a taxonomic editorThalassema scutatus Ranzani, 1817 accepted as Checked: verified by a taxonomic editorSternaspis scutata Ranzani, 1817 (status source)
Distributions
(8)
Angolan part of the South Atlantic Ocean for Sternaspis africana Augener, 1918
East Cape (North Island) for Sternaspis princeps Selenka, 1885
Gulf of Naples for Sternaspis thalassemoides Otto, 1821
Gulf of Oman for Sternaspis thorsoni Sendall & Salazar-Vallejo, 2013
Indonesia for Sternaspis rietschi Caullery, 1944
Kalibo Town for Petersenaspis palpallatoci Sendall & Salazar-Vallejo, 2013
Thailand part of the Andaman or Burma Sea for Sternaspis andamanensis Sendall & Salazar-Vallejo, 2013
Vestmannaeyjar for Caulleryaspis gudmundssoni Sendall & Salazar-Vallejo, 2013
Edit
history
Date   action   by
2013-04-09 02:24:26Z  created  Read, Geoffrey
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