Oxypleurodon, Miers, 1885

Lee, Bee Yan, Forges, Bertrand Richer De & Ng, Peter K. L., 2019, Deep-sea spider crabs of the family Epialtidae MacLeay, 1838, from Papua New Guinea, with a redefinition of Tunepugettia Ng, Komai & Sato, 2017, and descriptions of two new genera (Crustacea: Decapoda: Brachyura: Majoidea), Zootaxa 4619 (1), pp. 1-44: 12

publication ID

https://doi.org/10.11646/zootaxa.4619.1.1

publication LSID

lsid:zoobank.org:pub:CA6AEB18-2F97-449C-AE34-E1509DFFC841

persistent identifier

http://treatment.plazi.org/id/03C9AC69-1E65-FFA1-649F-FE3BB1B1E84B

treatment provided by

Plazi

scientific name

Oxypleurodon
status

 

Oxypleurodon   sp. 2

( Fig. 4 View FIGURE 4 A–C)

Material examined. 1 ovigerous female (14.0 × 9.7 mm) (MNHN-IU- 2011-2802), 1 ovigerous female (13.3 × 9.1 mm) ( ZRC 2018.1479, ex. MNHN-IU- 2011-2802), stn CP3646, 06°45’S 147°49’E, 460–485 m, coll. BIOPAPUA Expedition, 24 August 2010.

Remarks. The overall carapace morphology of O. sp. 2 is similar to O. stimpsoni   . Compared to a topotypic specimen of O. stimpsoni   , however, the differences are obvious: the branchial plates are sharp anteriorly in O. stimpsoni   ( Lee et al. 2017: fig. 2) (versus rounded with an indented anterior border in Oxypleurodon   sp. 2; Fig. 4A View FIGURE 4 ); the cardiac plate is ovate in O. stimpsoni   ( Lee et al. 2017: fig. 2) (versus with indented lateral expansions making it elliptical-shaped with irregular distal edges in Oxypleurodon   sp. 2; Fig. 4A View FIGURE 4 ); and there is only one slender ovate mesogastric plate in O. stimpsoni   ( Lee et al. 2017: fig. 2) (versus with one ovate mesogastric plate, which is constricted in the lower part and with two large gastric granules in Oxypleurodon   sp. 2; Fig. 4A View FIGURE 4 ). In O. alisae   n. sp., the pseudorostral spines are long with both spines appressed ( Figs. 1C View FIGURE 1 , 2A View FIGURE 2 ) (versus distinctly bifid in Oxypleurodon   sp. 2; Fig. 4A View FIGURE 4 ); and the branchial plate is more deeply indented in Oxypleurodon   sp. 2 ( Fig. 4A View FIGURE 4 ) than in O. alisae   n. sp. ( Figs. 1C View FIGURE 1 , 2A View FIGURE 2 ).

It is likely that these specimens belong to a new species of Oxypleurodon   , but with only two female specimens on hand, more material, in particular male specimens, should be acquired before the species is formally described.

ZRC

Zoological Reference Collection, National University of Singapore