Baseodiscus zebra, Kajihara & Abukawa & Chernyshev, 2022

Kajihara, Hiroshi, Abukawa, Shushi & Chernyshev, Alexei V., 2022, Exploring the basal topology of the heteronemertean tree of life: establishment of a new family, along with turbotaxonomy of Valenciniidae (Nemertea: Pilidiophora: Heteronemertea), Zoological Journal of the Linnean Society 196, pp. 503-548 : 529-530

publication ID

https://doi.org/ 10.1093/zoolinnean/zlac015

publication LSID

lsid:zoobank.org:pub:78C56409-FCCF-4116-8D8C-FF66B247C56C

DOI

https://doi.org/10.5281/zenodo.7043846

persistent identifier

https://treatment.plazi.org/id/EAA8D387-3EC0-4F9B-AE38-2DED799D7DFB

taxon LSID

lsid:zoobank.org:act:EAA8D387-3EC0-4F9B-AE38-2DED799D7DFB

treatment provided by

Plazi

scientific name

Baseodiscus zebra
status

sp. nov.

BASEODISCUS ZEBRA SP. NOV.

( FIG. 2P View Figure 2 )

Baseodiscus mexicanus: Colin & Arneson, 1995: 150– 151 View in CoL , fig. 686 ( Palau); Chernyshev & Volvenko, 2008: 106 (Komodo, Indonesia); Kajihara, Yoshida & Uyeno, 2012: 754–755, fig. 2A, B (Okinawa, Japan); Kajihara, 2017: 423, fig. 16.2d.

Zoobank registration: u r n: l s i d: z o o b a n k. org:act: EAA8D387-3EC0-4F9B-AE38-2DED799D7DFB.

Material examined: Holotype, RUMF-ZN-00001 (DNA voucher ICHUM 6317 View Materials ), 31 March 2012, 3–4 m depth, Cape Manza (26°30′16″N, 127°50′39″E), On’na-son, west coast of Okinawa-jima, Japan, SCUBA, collected by D. Uyeno. GoogleMaps

Sequences: From ICHUM 6317 View Materials : LC178607 View Materials , 18S (1795 bp) ; LC178639 View Materials , 28S (2086 bp) ; LC178688 View Materials , 16S (505 bp) ; LC190960 View Materials , COI (658 bp) .

Etymology: The new specific name is a noun in the nominative case, referring to the colour pattern of the species.

Description: Head white, with indigo dorsal and ventral cephalic patches; with transverse cephalic furrow encircling neck; numerous secondary furrows present; numerous, small, black eyes distributed laterally along sides of head. Body white, with numerous bands of same colour as cephalic patches ( Fig. 2P View Figure 2 ).

Distribution: Although molecularly confirmed only from the type locality, Okinawa ( Japan), B. zebra is probably distributed widely in the western Pacific.

Remarks: Sequences LC190960 View Materials ( COI) and LC178688 View Materials (16S) from the holotype differ by 12.6% and 6.8% in uncorrected p -distance from KF935503 View Materials ( COI) and KF935449 View Materials (16S), respectively, both from MCZ IZ- 135321 collected in Baja California, Mexico and identified as B. mexicanus by G. Giribet ( Kvist et al., 2014; MCZbase, www.mcz.harvard.edu). Kajihara et al. (2012) argued a possible amphi-Pacific distribution for B. mexicanus , but the western-Pacific population (possibly extending from Japan via Palau to Australia; Colin & Arneson, 1995; Chernyshev & Volvenko, 2008) is here regarded as a distinct species.

Because the type locality of B. mexicanus is Mazatlán, Mexico ( Bürger, 1893), the name mexicanus should be applied to the eastern-Pacific population, in which Coe (1940: 261) noted the colour to be variably brownish green, maroon, deep red, mahogany or brownish violet. The body colour appears to be generally reddish in B. mexicanus , whereas in B. zebra it is bluish.

COI

University of Coimbra Botany Department

MCZ

Museum of Comparative Zoology

Kingdom

Animalia

Phylum

Nemertea

Class

Pilidiophora

Order

Heteronemertea

Family

Valenciniidae

Genus

Baseodiscus

Loc

Baseodiscus zebra

Kajihara, Hiroshi, Abukawa, Shushi & Chernyshev, Alexei V. 2022
2022
Loc

Baseodiscus mexicanus: Colin & Arneson, 1995: 150– 151

Kajihara H 2017: 423
Kajihara H & Yoshida R & Uyeno D 2012: 754
Chernyshev AV & Volvenko IE 2008: 106
Colin PL & Arneson C 1995: 151
1995
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