Document of bibliographic reference 349831

BibliographicReference record

Type

Bibliographic resource

Type of document

Journal article

BibLvlCode

AS

Title

The taxonomic status of the headshield slug genus Nakamigawaia Kuroda and Habe, 1961 (Gastropoda: Cephalaspidea: Aglajidae), with the description of a new species from the Western Pacific

Abstract

Nakamigawaia is a poorly understood genus of Aglajidae sea slugs with only two species formally ascribed. In this paper we explore new morpho-anatomical characters using stereo and scanning electron microscopy and employ different molecular approaches (a cytochrome c oxidase sub-unit I gene phylogeny, the Automatic Barcode Gap Discovery species delimitation method, and genetic distances) to compare specimens across the geographical span of the genus and from two distinct chromatic morphotypes occurring in the Western Pacific (blackish morph and white-dotted morph). Our results support the conspecificity of these two morphs and show they belong to an undescribed species here named Nakamigawaia nakanoae sp. nov. The species differs from the type species of the genus, N. spiralis, by the presence of a distinct open-dilated shell and differs from its Western Atlantic congener N. felis by subtle differences in the shell, male reproductive system and caudal lobes. Genetically (COI uncorrected p-distance) the two species (N. nakanoae and N. felis) are 18.8–20.1% distinct. The definition of the genus Nakamigawaia is discussed and the current assignment to the latter of lineages other than the type species is questioned.

WebOfScience code

https://www.webofscience.com/wos/woscc/full-record/WOS:000754230100001

Bibliographic citation

Hellem, E.; Malaquias, M.A.E. (2021). The taxonomic status of the headshield slug genus Nakamigawaia Kuroda and Habe, 1961 (Gastropoda: Cephalaspidea: Aglajidae), with the description of a new species from the Western Pacific. J. Nat. Hist. 55(35-36): 2231-2244. https://dx.doi.org/10.1080/00222933.2021.1986165

Topic

Marine

Is peer reviewed

true

Access rights

open access

Is accessible for free

true