Valamunida Klompmaker and Robins, 2019

Hryniewicz, Krzysztof, Amano, Kazutaka, Bitner, Maria Aleksandra, Hagström, Jonas, Kiel, Steffen, Klompmaker, Adiël A., Mörs, Thomas, Robins, Cristina M. & Kaim, Andrzej, 2019, A late Paleocene fauna from shallow-water chemosynthesis-based ecosystems, Spitsbergen, Svalbard, Acta Palaeontologica Polonica 64 (1), pp. 101-141 : 127

publication ID	https://doi.org/10.4202/app.00554.2018
publication LSID	lsid:zoobank.org:pub:E6189ABB-9B6F-4057-BB8D-798C9B0BE388
DOI	https://doi.org/10.5281/zenodo.10986951
persistent identifier	https://treatment.plazi.org/id/320C87F4-4640-FFD7-FF1A-FE76FDD4D8FF
treatment provided by	Felipe (2024-04-16 16:16:57, last updated 2024-11-24 23:28:08)
scientific name	Valamunida Klompmaker and Robins
status

Treatment

Genus Valamunida Klompmaker and Robins nov.

ZooBank LSID: urn:lsid:zoobank.org:act:2BA78BB3-34F8-4686-8C5CF70F0416A041

Type species: Valamunida haeggi Klompmaker and Robins sp. nov.; by monotypy, see below.

Etymology: From the Norse völva, an ancient seeress who carried a wand, similar to the rostrum on this galatheoid and - munida referring to the family name.

Diagnosis. —As for the type species by monotypy.

Remarks.—The new genus is placed within the Munididae based on a combination of tubercles and spines on the anterior carapace and its lateral margins, the trifid rostrum, and the (bases of) spines at the outer orbital angle. These characters are typical for most Munididae , but this combination of characters is not typical for other galatheoid families ( Ahyong et al. 2010).

Valamunida Klompmaker and Robins gen. nov. is established on the basis of a combination of the tubercular ornamentation across the epibranchial and hepatic regions, more transversely elongate transverse ridges on the posterior carapace, an epigastric region with varied ornamentation, lack of a strong, forwardly-oriented spine on the mesogastric region, and a strongly depressed intestinal region posteriorly. Valamunida Klompmaker and Robins gen. nov. differs from all 25 known munidid genera. Tubercular ornamentation on the epibranchial and hepatic regions is uncommon in munidids and can only be found in the fossil genera Juracrista Robins, Feldmann, and Schweitzer, 2012 and Protomunida Beurlen, 1930 , whereas it is also present in modern Babamunida Cabezas, Macpherson, and Machordom, 2008 View in CoL , Bathymunida Balss, 1914 View in CoL , Hendersonida Cabezas and Macpherson, 2014 View in CoL , Heteronida Baba and de Saint Laurent, 1996 View in CoL , Paramunida Baba, 1988 View in CoL , Plesionida Baba and de Saint Laurent, 1996 View in CoL , and Tasmanida Ahyong, 2007 View in CoL . All other genera do not exhibit these previously elaborated features and most of them also lack a strongly depressed posterior part of the intestinal region. From the leftover genera, Babamunida View in CoL , Juracrista , and Protomunida exhibit only rows of tubercles/spines on the epigastric regions, lacking a much stronger spine. They also lack a strongly depressed posterior part of the intestinal region. Unlike the new genus, Bathymunida View in CoL , Heteronida View in CoL , and Tasmanida View in CoL bear a strong mesogastric spine, as does the type species of Plesionida View in CoL . Plesionida View in CoL , Paramunida View in CoL , and Hendersonida View in CoL have a much more granular, spinose to tubercular posterior carapace than Valamunida Klompmaker and Robins gen. nov. with its transverse ridges. Paramunida View in CoL and Hendersonida View in CoL also lack the depression in the intestinal region.

References

Ahyong, S. T. 2007. Decapod Crustacea collected by the NORFANZ Expedition: Galatheidae and Polychelidae. Zootaxa 1593: 1 - 54.

Ahyong, S. T., Baba, K. J., Macpherson, E., and Poore, G. C. B. 2010. A new classification of the Galatheoidea (Crustacea: Decapoda: Anomura). Zootaxa 2676: 57 - 68.

Baba, K. 1988. Chirostylid and galatheid crustaceans (Decapoda: Anomura) of the Albatross Philippine Expedition 1907 - 1910. Researches on Crustacea, Special Number 2: 1 - 203.

Baba, K. and de Saint Laurent, M. 1996. Crustacea Decapoda: Revision of the genus Bathymunida Balss, 1914, and description of six new related genera (Galatheidae). In: A. Crosnier (ed.), Resultats des Campagnes MUSORSTOM, v. 15. Memoires du Museum National d'Histoire Naturelle 168: 433 - 502.

Balss, H. 1914. Uber einige interessante Decapoden der Pola - Expeditionen in das Rote Meer. Anzeiger der Kaiserlichen Akademie der Wissenschaften Mathematisch-Naturwissenschaftlichen Klasse 1914: 133 - 138.

Cabezas, P., Macpherson, E., and Machordom, A. 2008. A new genus of squat lobster (Decapoda: Anomura: Galatheidae) from the South West Pacific and Indian Ocean inferred from morphological and molecular evidence. Journal of Crustacean Biology 28: 68 - 75.

Cabezas, P. and Macpherson, E. 2014. A new species of Paramunida Baba, 1988 from the Central Pacific Ocean and a new genus to accommodate P. granulata (Henderson, 1885). ZooKeys 425: 15 - 32.

Robins, C. M., Feldmann, R. M., and Schweitzer, C. E. 2012. The oldest Munididae (Decapoda: Anomura: Galatheoidea) from Ernstbrunn, Austria (Tithonian). Annalen des Naturhistorischen Museums in Wien, Serie A 114: 289 - 300.