Pugettia vesicularis ( Rathbun, 1907 ) Yan & Lee & Forges & Ng, 2021

Yan, Bee, Lee, Forges, Bertrand Richer De & Ng, Peter K. L., 2021, The generic affinities of the Indo-West Pacific species assigned to Rochinia A. Milne-Edwards, 1875 (Crustacea: Brachyura: Majoidea: Epialtidae), Raffles Bulletin of Zoology 69, pp. 19-44 : 33

publication ID

https://doi.org/ 10.26107/RBZ-2021-0004

publication LSID

lsid:zoobank.org:pub:80B28514-EBB5-4506-AAB1-637DF477E5A0

persistent identifier

https://treatment.plazi.org/id/795B1368-EA72-FFEF-EAA8-C2030E1FFE42

treatment provided by

Diego

scientific name

Pugettia vesicularis ( Rathbun, 1907 )
status

comb. nov.

Pugettia vesicularis ( Rathbun, 1907) View in CoL , new combination

( Figs. 6D–F View Fig , 8E, F View Fig )

Scyramathia vesicularis Rathbun, 1907: 73 View in CoL , pl. 5 fig. 7, pl. 8 fig. 1–1a (type locality: Southeast of Hood island, Galapagos).

Rochinia versicularis – Rathbun, 1925: 210 (key), 221, pl. 230. – Garth, 1958: 283 (key), 284, pl. P fig. 6, pl. 31 fig. 1. – Tavares, 1991: 161 (list), 170, 174, fig. 4C. – Casadío et al., 2005: 159 (list). – Ng & Richer de Forges, 2007: 63 (list). – Ng et al., 2008: 106 (list). – Pettan, 2013: 81, 86 (key), figs. 15a, b, 22d. – Tavares & Santana, 2018: 223 (list).

Material examined. Holotype: male (14.6 × 10.6 mm) (USNM 32860), stn 4642, southeast of Hood Island (= Española Island ), Galapagos Island, coll. 7 November 1904. Others: 1 ovigerous female (13.4 × 10.0 mm), 1 female (9.3 × 6.7 mm) (USNM 32860), same data as holotype.

Remarks. Little is known about P. vesicularis . The species was described based on four specimens collected from southeast of Hood Island, Galapagos Islands, and Rathbun (1907) indicated the single male specimen as the holotype. She did not describe the G1 but the overall morphology was noted to be similar to that of Samadinia pulchra due to its spiny carapace ( Rathbun, 1907). It was also observed by Rathbun (1907: 73) that the difference between the species is in the placement of spines on the carapace and having shorter ambulatory legs. The G1 figured by Garth (1958: 535, pl. P fig. 6) shows three lobes at its extremity (see also Griffin & Tranter, 1986a: 175; Tavares, 1991: 170, fig. 4C). This G1 morphology is distinct from that of Samadinia ( Fig. 4A–M View Fig ), which has single distal sharp tip. Garth (1958) commented that this species should be removed from Rochinia to its own genus due to the morphology of the G1 but did not take any formal action. After examining the morphology of the G1 of this species ( Fig. 9E, F View Fig ), it is here shown to be different from Rochinia (see Tavares & Santana, 2018: fig. 13I, J), Scyramathia (see Tavares & Santana, 2018: fig. 13A, B), and Samadinia ( Fig. 4A–M View Fig ). It is more similar to the typical form seen in Pugettia (see also Garth, 1958: pl. L figs. 1–7).

A total of 24 species are now recognised in Pugettia ( Table 1), but the different external morphologies of these species suggest a revision is necessary and Pugettia is probably not monophyletic.

Distribution. This species is only known from the Galapagos Islands ( Rathbun, 1907).

Kingdom

Animalia

Phylum

Arthropoda

Class

Malacostraca

Order

Decapoda

Family

Epialtidae

Genus

Pugettia

Loc

Pugettia vesicularis ( Rathbun, 1907 )

Yan, Bee, Lee, Forges, Bertrand Richer De & Ng, Peter K. L. 2021
2021
Loc

Rochinia versicularis

Tavares M & Santana W 2018: 223
Pettan RB 2013: 81
Ng PKL & Guinot D & Davie PJF 2008: 106
Ng PKL & Richer de Forges B 2007: 63
Casadio S & Feldmann RM & Parras A & Schweitzer CE 2005: 159
Tavares MS 1991: 161
Garth JS 1958: 283
Rathbun MJ 1925: 210
1925
Loc

Scyramathia vesicularis

Rathbun MJ 1907: 73
1907
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