Limpluvia Fend & Torii 2024, gen. nov.

Limpluvia Fend & Torii gen. nov. (clade 5 in Fig. 1) ZooBank LSID: urn:lsid:zoobank.org:act: 6D5C386F-B4AF-477F-A4DD-5FE39761616D Type species: By monotypy, Limpluvia setoensis Fend & Torii sp. nov. Etymology Limpluvia (fem., portmanteau word derived from the Latin ‘ limpidus ’, clear, transparent, and ‘ pluvia ’, rain) by allusion to the semi-transparent and iridescent aspect of the worm when alive. Diagnosis Chaetae paired, simple-pointed, sigmoid, nodulate. Pharynx eversible, with diffuse pharyngeal glands closely associated with the dorsal pharyngeal pad, but not extending posteriad as a series of ‘septal’ glands; pharynx also associated with two short tubular structures that may also function as glands. Nephridial ducts simple, tubular. Clitellum one cell thick. Spermathecae one pair, pores anterolateral in IX. Two pairs of testes in X–XI, one pair of ovaries in XII, eggs mesolecithal. Gonoducts simple, anterior pair of male ducts plesioporous, posterior pair prosoporous, both extending to separate male pores in XI. Female ducts are conical funnels, with pores at 12/13. Limpluvia is currently monotypic, and morphologically distinguished by the characters listed below in the species description for Limpluvia setoensis.