See text Ergalataxinae is a taxonomic subfamily of small to medium-sized predatory sea snails, marine gastropod mollusks within the family Muricidae, the rock snails.

[2] The subfamily Ergalataxinae contains the following genera:[3] The classification into this subfamily is doubtful for the genera Daphnellopsis Schepman, 1913; Lindapterys Petuch, 1987 Maculotriton Dall, 1904; and Uttleya Marwick, 1934 The subfamily Ergalataxinae originally contained just four species: Bedevina birileffi, Ergalatax contracta, E. tokugawai, and Cytharomorula vexillum.

[4]: 1  Later, genera Morula, Spinidrupa, Cronia, and Drupella were transferred from the Rapaninae (also called Thaidinae).

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:[5] Genetic material from Azumamorula, Daphnellopsis, Lindapterys, and Uttleya was not included.

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).