Pseudunela viatoris

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Pseudunela viatoris - Wikipedia

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Pseudunela viatoris

A live Pseudunela viatoris hf – head-foot complex.
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
(unranked):	clade Heterobranchia clade Euthyneura clade Panpulmonata clade Acochlidiacea clade Hedylopsacea^[1]
Family:	Pseudunelidae
Genus:	Pseudunela
Species:	P. viatoris
Binomial name
*Pseudunela viatoris* Neusser, Jörger & Schrödl, 2011^[2]

Pseudunela viatoris is a species of sea slug, an acochlidian, a shell-less marine gastropod mollusk in the family Pseudunelidae.

The specific name viatoris is after the Latin word “viator” (engl. pilgrim/voyager) according to its supposed ability to travel over long distances.^[2]

Distribution

Pseudunela viatoris is known from Viti Levu, Fiji and Gili Lawa Laut, Indonesia.^[2] The type locality is Fiji, Viti Levu, Laucala Bay, Nukumbutho Island, GPS: 18°10.47′S, 178°28.34′E.^[2]

Description

The body size of living specimens of Pseudunela viatoris is 3–4 mm.^[2] The body is divided into an anterior head-foot complex and a posterior elongated visceral hump.^[2] The paired labial tentacles are broad at the base and taper to the end.^[2] The rhinophores are tapered and shorter and thinner than the labial tentacles.^[2] The densely ciliated foot is as broad as the anterior head-foot complex and extends about one third of the elongated visceral hump.^[2] The heart bulb is visible externally in the anterior part of the visceral hump on the right body side.^[2] Subepidermal, needle-shaped calcareous spicules are sparsely distributed in the cephalic tentacles, the foot and the visceral hump; in the anterior part of the latter they are larger than in the posterior part.^[2] The body colour is whitish translucent, the digestive gland is brownish coloured (in specimens from Indonesia: orange-brownish shining through the epidermis).^[2] Epidermal glands are distributed particularly over the visceral hump.^[2] Whereas eyes are not visible externally in specimens from Fiji, eyes are weakly visible in some specimens from Indonesia.^[2] Eye diameter is 30-35 μm.^[2]

Nervous system, digestive system, circulatory system, excretory system and reproductive system are described by Neusser et al. (2011) in detail.^[2]

Ecology

Pseudunela viatoris is a minute species that lives in the spaces between sand grains in saltwater habitats, and it is thus considered to be a mesopsammic, marine interstitial animal that is part of the meiofauna of marine sands.^[2]

References

This article incorporates CC-BY-2.5 text from the reference^[2]

^ Schrödl M. & Neusser T. P. (2010). "Towards a phylogeny and evolution of Acochlidia (Mollusca: Gastropoda: Opisthobranchia)". Zoological Journal of the Linnean Society 158: 124-154. doi:10.1111/j.1096-3642.2009.00544.x.
^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l ^m ⁿ ^o ^p ^q ^r Neusser T. P., Jörger K. M. & Schrödl M. (2011). "Cryptic Species in Tropic Sands – Interactive 3D Anatomy, Molecular Phylogeny and Evolution of Meiofaunal Pseudunelidae (Gastropoda, Acochlidia)". PLoS ONE 6(8): e23313. doi:10.1371/journal.pone.0023313.

External links

Media related to Pseudunela viatoris at Wikimedia Commons

Taxon identifiers
Pseudunela viatoris	Wikidata: Q12066532 BOLD: 507386 CoL: 4PFFN GBIF: 6104472 iNaturalist: 1202176 IRMNG: 11849177 NCBI: 1080727 Open Tree of Life: 600007 Plazi: E8F35CE4-4335-604A-2DE9-CC2B9992082D WoRMS: 582145 ZooBank: 9A559BA2-4EEE-4F3B-A1D2-A72ECB92096B

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