Ergalataxinae is a Taxonomy (biology), taxonomic subfamily of small to medium-sized predatory sea snails, marine (ocean), marine gastropod mollusks within the family Muricidae, the rock snails. In this subfamily, the aragonite, aragonitic gastropod shell, shell has 0–2 varix (mollusc), varices.

Genera

The subfamily Ergalataxinae contains the following genera: *''Azumamorula'' Emerson, 1968 (uncertain, may be a subgenus of ''Morula'') *''Bedevina'' Habe, 1946 *''Claremontiella'' Houart, Zuccon & Puillandre, 2019 *''Cronia'' H. Adams & A. Adams, 1853 *''Cytharomorula'' Kuroda, 1953 *''Daphnellopsis'' Schepman, 1913 *''Drupella'' Thiele, 1925 *''Ergalatax'' Iredale, 1931 *†''Janssenia'' Landau, Harzhauser, İslamoğlu & Silva, 2013 *''Lataxiena'' Jousseaume, 1883 *''Lauta (gastropod), Lauta'' Houart, Zuccon & Puillandre, 2019 *''Lindapterys'' Petuch, 1987 *''Maculotriton'' Dall, 1904 *''Morula (gastropod), Morula'' Schumacher, 1817 *''Murichorda'' Houart, Zuccon & Puillandre, 2019 *''Muricodrupa'' Iredale, 1918 *''Oppomorus'' Iredale, 1937 *''Orania (gastropod), Orania'' Pallary, 1900 *''Pascula'' Dall, 1908 *''Phrygiomurex'' Dall, 1904 *''Spinidrupa'' Habe & Kosuge, 1966 *''Tenguella (gastropod), Tenguella'' Arakawa, 1965 *''Trachypollia'' Woodring, 1928 *''Usilla (gastropod), Usilla'' H. Adams & A. Adams, 1853 *''Uttleya'' Marwick, 1934 ;Genera brought into synonymy : * ''Cumella'' Jousseaume, 1898: synonym of ''Lataxiena'' Jousseaume, 1883 * ''Habromorula'' Houart, 1995: synonym of ''Morula (Habromorula)'' Houart, 1995 * ''Morulina'' Dall, 1923: synonym of ''Morula (genus), Morula'' Schumacher, 1817 * ''Roquesia'' Petuch, 2013: synonym of ''Colubraria'' Schumacher, 1817 ;Genera that have been treated as subgenera: * ''Azumamorula'' as ''Morula (Azumamorula)'' * ''Oppomorus'' as ''Morula (Oppomorus)'', re-raised to genus in 2013. * ''Usilla'' as ''Cronia (Usilla)'' The classification into this subfamily is doubtful for the genera ''Daphnellopsis'' Schepman, 1913; ''Lindapterys'' Petuch, 1987 ''Maculotriton'' Dall, 1904; and ''Uttleya'' Marwick, 1934

Taxonomy

The subfamily Ergalataxinae originally contained just four species: ''Bedevina birileffi'', ''Ergalatax contracta'', ''E. tokugawai'', and ''Cytharomorula vexillum''. Later, genera ''Morula'', ''Spinidrupa'', ''Cronia'', and ''Drupella'' were transferred from the Rapaninae (also called Thaidinae). New species have been described, and genera split, leading to a subfamily of approximately 150 species in 20+ genera.

Molecular phylogeny

Gene-sequence analysis of four genes (cytochrome ''c'' oxidase subunit I, and three ribosomal RNA) from 52 Ergalataxine species showed three major clades, with four suprageneric sub-clades in the last: * Clade A: ''Tenguella'', ''Muricodrupa'', ''Claremontiella'' * Clade B: ''Morula'' (), ''Murichorda'' * Clade C: ''Phrygiomurex'', and: ** Clade W: ''Lataxiena'', ''Usilla'', some ''Orania'' ** Clade X: ''Drupella''; ''Cronia'', ''Maculotriton'', ''Ergalatax'' ** Clade Y: ''Oppomorus''; ''Spinidrupa'', ''Bedevina'' ** Clade Z: ''Cytharomorula'', some ''Orania'', ''Pascula'', ''Lauta'' Genetic material from ''Azumamorula'', ''Daphnellopsis'', ''Lindapterys'', and ''Uttleya'' was not included. Genus names above reflect later changes, such as ''Lauta parva'' for ''"Morula" parva'', ''Claremontiella nodulosa'' for ''"Morula" nodulosa'', and ''Murichorda'' for ''"Muricodrupa" fiscella'' and ''"Morula" rumphiusi''. ''Cronia'', ''Maculotriton'', and ''Ergalatax'' may prove to be a single species, in which case the name ''Cronia'' would have precedence. If ''Ergalatax'' is subsumed into ''Cronia'', this would impact the name of the Ergalataxinae. Most ''Spinidrupa'' grouped with ''Bedevina'' (which has priority), but the type species ''S. euracantha'' was more basal to clade Y (only 12S rRNA sequence was available for the latter). Orania is polyphyletic, but its type species was not included.

References

External links

{{Taxonbar, from=Q5385781 Ergalataxinae, Muricidae