Limpluvia Fend & Torii, 2024

Martin, Patrick, Fend, Steven, Martinsson, Svante, Klinth, Mårten, Torii, Takaaki & Erséus, Christer, 2024, Towards an integrative revision of Haplotaxidae (Annelida: Clitellata), Zoological Journal of the Linnean Society (zlae 141) 202 (4), pp. 1-38 : 26

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 .

Figures

Figure 1. Phylogenetic tree of Clitellata estimated with Bayesian inference in MrBayes, using a concatenated set of markers, i.e. 12S, 16S, COI, 18S, and 28S. The tree is rooted such that Parvidrilidae and Randiellidae (also Clitellata) appear as lineages outside the rest of the ‘Clitellata’ tree, a position strongly supported by the metagenomic analyses of Erséus et al. (2020). Haplotaxid like taxa are shaded.Support values at branches are posterior probabilities, scale represents expected number of changes/site. Capital letters at the end of the species codes in Haplotaxis indicate countries of origin.BEN: Benin, FR: France, GR: Greece, IT: Italy, JP: Japan, SE: Sweden, US: USA. Inset, photo of live specimen of Haplotaxis spSE in its natural habitat, soil soaked in groundwater, photo: Johan Wingborg, and photo of live specimen of Haplotaxis spBEN6, photo: Patrick Martin.