Oxymeris Dall, 1903

Fedosov, Alexander E, Malcolm, Gavin, Terryn, Yves, Gorson, Juliette, Modica, Maria Vittoria, Holford, Mandë & Puillandre, Nicolas, 2019, Phylogenetic classification of the family Terebridae (Neogastropoda: Conoidea), Journal of Molluscan Studies The Malacological Society of London 85 (4), pp. 359-388 : 14

publication ID	https://doi.org/ 10.1093/mollus/eyz004
DOI	https://doi.org/10.5281/zenodo.4469935
persistent identifier	https://treatment.plazi.org/id/D42087AD-FF8B-887D-2A61-E7E7C043FA69
treatment provided by	Tatiana
scientific name	Oxymeris Dall, 1903
status

Treatment

Genus Oxymeris Dall, 1903 View in CoL

( Fig. 6 View Figure 6 F–H)

Type species: Buccinum maculatum Linnaeus, 1758 View Cited Treatment ; OD.

Synonyms: Abretia H. & A. Adams, 1853 View in CoL (invalid, junior homonym of Abretia Rafinesque, 1814 View in CoL ; type species Terebra cerithina Lamarck, 1822 View in CoL ; SD, Dall, 1908); Abretiella Bartsch, 1923 View in CoL (replacement name for Abretia H. & A. Adams, 1853 View in CoL ; type species Terebra cerithina Lamarck, 1822 View in CoL ; by typification of replaced name); Nototerebra Cotton, 1947 View in CoL (type species Terebra albida Gray, 1834 View in CoL ; OD).

Definition: Includes all species in clade B of Modica et al. (2019), and those that show a combination of conchological, anatomical and distribution features closely comparable with Oxymeris maculata or any genetically proven member of the clade.

Diagnosis: Diagnostic nucleotide combinations in Table 5 View Table 5 .

Shell: Medium-sized to large, reaching 273 mm; weakly sculptured, typically with orthoconoid spire and rather wide aperture. Protoconch multispiral, 3–3.75 whorls. Sculpture of subsutural band, smooth or with regular crenulations; juvenile sculpture often consisting of axial ribs. Whorls flattened in outline; last adult whorl inflated; siphonal canal short, stout. Aperture wide, elliptic to rounded.

Anatomy: Rhynchodeal introvert very large, proboscis absent or vestigial, salivary glands absent or very small, radula venom gland and accessory proboscis structure absent.

Distribution: Indo-Pacific, tropical East Pacific, West Africa.

Remarks: Species of Oxymeris are among the largest terebrids and can usually be easily identified by their large, shiny shells, with an orthoconoid or even slightly acuminate spire, often with a bulbous last whorl, a very wide aperture and a very short siphonal canal separated from the shell base by a deep groove. Nevertheless, some smaller species (e.g. O. cerithina ) have a spire with convex sides and superficially resemble medium-sized Punctoterebra and Myurella species. However, in most cases (except O. crenulata ), the Oxymeris species can be recognized by the complete lack of axial sculpture other than growth lines, while axial elements of varying strength and shape are present in Punctoterebra , Myurella and most other terebrid genera. Finally, widely spaced deep spiral grooves differentiate Perirhoe from Oxymeris .

Included species:

Oxymeris albida (Gray, 1834) 2;

O. areolata (Link, 1807) 1;

O. barbieri (Aubry, 2008) 2;

O. caledonica (G. B. Sowerby III, 1909) 1;

O. cerithina (Lamarck, 1822) 1;

O. chlorata (Lamarck, 1822) 1;

O. consors (Hinds, 1844) 1;

O. crenulata (Linnaeus, 1758) 1;

O. dillwynii (Deshayes, 1859) 2;

O. dimidiata (Linnaeus, 1758) 1;

O. fatua (Hinds, 1844) 2;