Ohtakianidae, Martin & Fend & Martinsson & Klinth & Torii & Erséus, 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 : 22

Ohtakianidae fam. nov. (clade 4 in Fig. 1 )

ZooBank LSID: urn:lsid:zoobank.org:act:1C4EB4C4-F385-45A9-AE8B-72EEC11E3C13

Type genus: Ohtakiana Fend & Torii gen. nov.

Diagnosis As for type genus.

Remarks

This family is currently monotypic, and morphologically distinguished only by the characters listed below in the genus diagnosis and species description. Morphologically, it resembles members of the Pelodrilidae , particularly Hologynus , and more detailed anatomical study is needed for comparison. At this point, the best distinguishing character appears to be the large midventral glands.

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.