First record and a new species of <i>Euphrosynoplax</i> (Crustacea: Pseudorhombilidae) from the southwestern Atlantic

A new species of deep-water brachyuran crab, Euphrosynoplax dincao, from southeastern Brazil is described and illustrated. The genus Euphrosynoplax currently consists of two species, E. clausaGuinot, 1969Guinot, D. 1969. Recherches préliminaires sur les groupements naturels chez les Crustacés Décapodes Brachyoures. VII. Les Goneplacidae. Bulletin du Muséum national d’Histoire naturelle , sér. 2, 41(3): 688-724., and E. campechiensisVázquez-Bader & Gracia, 1991Vázquez-Bader, A.R. & Gracia, A. 1991. Euphrosynoplax campechiensis, new species (Decapoda, Brachyura, Goneplacidae), from the continental shelf of the Southwestern Gulf of Mexico. Bulletin du Muséum national d’Histoire naturelle , sér. 4, section A, 13(3-4): 688-724., both only known from the Gulf of Mexico. The new species can be easily separated from its northern counterparts by a suite of carapace and appendage characters. Euphrosynoplax campechiensis is recorded for the first time from the Caribbenan Sea (Guadeloupe and between Saint Kitts and Nevis).

Keywords.
Taxonomy; Biodiversity; Brazil; Gulf of Mexico; Caribbean Sea; Deep-water

Authorship

Marcos Tavares

Universidade de São Paulo (USP), Museu de Zoologia (MZUSP). São Paulo, SP, Brasil. E-mail: mdst@usp.br (corresponding author)Universidade de São PauloBrasilSão Paulo, SP, BrasilUniversidade de São Paulo (USP), Museu de Zoologia (MZUSP). São Paulo, SP, Brasil. E-mail: mdst@usp.br (corresponding author)

http://orcid.org/0000-0002-7186-5787

William Santana

Universidade Regional do Cariri (URCA), Departamento de Ciências Físicas e Biológicas. Crato, CE, Brasil. E-mail: willsantana@gmail.comUniversidade Regional do CaririBrasilCrato, CE, BrasilUniversidade Regional do Cariri (URCA), Departamento de Ciências Físicas e Biológicas. Crato, CE, Brasil. E-mail: willsantana@gmail.com

http://orcid.org/0000-0003-3086-4419

Both authors contributed equally to this manuscript.

Carlos José Einicker Lamas

SCIMAGO INSTITUTIONS RANKINGS

Figures

Figures (5)

Thumbnail

Figure 1
(A-E) Euphrosynoplax dincao sp. nov., holotype male, cl 48.5 mm, cw 54 mm (MZUSP 25998). (A, B) Habitus in dorsal and ventral view, respectively. (C) Anterior cephalothorax. Legs cropped electronically. (D, E) Right and left chelipeds, respectively, in lateral view. Scales: 15 mm.

Thumbnail

Figure 2
(A-F) Habitus and carapace in dorsal view. (A, B) Euphrosynoplax dincao sp. nov., holotype male, cl 48.5 mm, cw 54 mm (MZUSP 25998). (C, D) Euphrosynoplax campechiensisVázquez-Bader & Gracia, 1991Vázquez-Bader, A.R. & Gracia, A. 1991. Euphrosynoplax campechiensis, new species (Decapoda, Brachyura, Goneplacidae), from the continental shelf of the Southwestern Gulf of Mexico. Bulletin du Muséum national d’Histoire naturelle , sér. 4, section A, 13(3-4): 688-724., male, cl 24 mm, cw 32 mm (USNM 267608). (E, F) Euphrosynoplax clausaGuinot, 1969Guinot, D. 1969. Recherches préliminaires sur les groupements naturels chez les Crustacés Décapodes Brachyoures. VII. Les Goneplacidae. Bulletin du Muséum national d’Histoire naturelle , sér. 2, 41(3): 688-724., male, cl 11 mm, cw 21 mm (USNM 250197). Arrows indicate the last (fourth) anterolateral carapace tooth. Note in (B) area behind the supraorbital margin distinctly granular and devoid of granules in (C, D). Pubescence not represented behind the supraorbital margin in (D). Note in (F) carapace appearing almost smooth to unaided eyes but provided with minute granules. Scales: 10 mm.

Thumbnail

Figure 3
(A-E) First male gonopod in lateral (A-C) and mesial view (D, E). F, Second male gonopod in mesial view. (A, B, F) Euphrosynoplax dincao sp. nov., holotype, cl 48.5 mm, cw 54 mm (MZUSP 25998). (B, E) Euphrosynoplax campechiensisVázquez-Bader & Gracia, 1991Vázquez-Bader, A.R. & Gracia, A. 1991. Euphrosynoplax campechiensis, new species (Decapoda, Brachyura, Goneplacidae), from the continental shelf of the Southwestern Gulf of Mexico. Bulletin du Muséum national d’Histoire naturelle , sér. 4, section A, 13(3-4): 688-724., cl 22 mm, cw 31 mm (USNM 298320). (C) Euphrosynoplax clausaGuinot, 1969Guinot, D. 1969. Recherches préliminaires sur les groupements naturels chez les Crustacés Décapodes Brachyoures. VII. Les Goneplacidae. Bulletin du Muséum national d’Histoire naturelle , sér. 2, 41(3): 688-724., holotype, cl 24 mm, cw 33 mm (USNM 65938) after Guinot (1969Guinot, D. 1969. Recherches préliminaires sur les groupements naturels chez les Crustacés Décapodes Brachyoures. VII. Les Goneplacidae. Bulletin du Muséum national d’Histoire naturelle , sér. 2, 41(3): 688-724.: 715, fig. 127). ap, apical lobe. ml, mesial lobe. Scales: 1 mm.

Thumbnail

Figure 4
(A, D) Euphrosynoplax campechiensisVázquez-Bader & Gracia, 1991Vázquez-Bader, A.R. & Gracia, A. 1991. Euphrosynoplax campechiensis, new species (Decapoda, Brachyura, Goneplacidae), from the continental shelf of the Southwestern Gulf of Mexico. Bulletin du Muséum national d’Histoire naturelle , sér. 4, section A, 13(3-4): 688-724., male, cl 24 mm, cw 32 mm (USNM 267608). (A, B) Habitus in dorsal and ventral view, respectively. (C) Anterior cephalothorax. (D) Left cheliped in lateral view. Scales: 10 mm.

Thumbnail

Figure 5
(A, D) Euphrosynoplax clausaGuinot, 1969Guinot, D. 1969. Recherches préliminaires sur les groupements naturels chez les Crustacés Décapodes Brachyoures. VII. Les Goneplacidae. Bulletin du Muséum national d’Histoire naturelle , sér. 2, 41(3): 688-724.. (A, B) Habitus, dorsal and ventral view, respectively, holotype male, cl 24 mm, cw 33 mm (USNM 65938). (C, D) Anterior cephalothorax and right cheliped in lateral view, male, cl 11 mm, cw 21 mm (USNM 250197). Scales: A-C, 10 mm; D, 0.5 mm.

Figure 1 (A-E) Euphrosynoplax dincao sp. nov., holotype male, cl 48.5 mm, cw 54 mm (MZUSP 25998). (A, B) Habitus in dorsal and ventral view, respectively. (C) Anterior cephalothorax. Legs cropped electronically. (D, E) Right and left chelipeds, respectively, in lateral view. Scales: 15 mm.

Figure 2 (A-F) Habitus and carapace in dorsal view. (A, B) Euphrosynoplax dincao sp. nov., holotype male, cl 48.5 mm, cw 54 mm (MZUSP 25998). (C, D) Euphrosynoplax campechiensisVázquez-Bader & Gracia, 1991Vázquez-Bader, A.R. & Gracia, A. 1991. Euphrosynoplax campechiensis, new species (Decapoda, Brachyura, Goneplacidae), from the continental shelf of the Southwestern Gulf of Mexico. Bulletin du Muséum national d’Histoire naturelle , sér. 4, section A, 13(3-4): 688-724., male, cl 24 mm, cw 32 mm (USNM 267608). (E, F) Euphrosynoplax clausaGuinot, 1969Guinot, D. 1969. Recherches préliminaires sur les groupements naturels chez les Crustacés Décapodes Brachyoures. VII. Les Goneplacidae. Bulletin du Muséum national d’Histoire naturelle , sér. 2, 41(3): 688-724., male, cl 11 mm, cw 21 mm (USNM 250197). Arrows indicate the last (fourth) anterolateral carapace tooth. Note in (B) area behind the supraorbital margin distinctly granular and devoid of granules in (C, D). Pubescence not represented behind the supraorbital margin in (D). Note in (F) carapace appearing almost smooth to unaided eyes but provided with minute granules. Scales: 10 mm.

Figure 3 (A-E) First male gonopod in lateral (A-C) and mesial view (D, E). F, Second male gonopod in mesial view. (A, B, F) Euphrosynoplax dincao sp. nov., holotype, cl 48.5 mm, cw 54 mm (MZUSP 25998). (B, E) Euphrosynoplax campechiensisVázquez-Bader & Gracia, 1991Vázquez-Bader, A.R. & Gracia, A. 1991. Euphrosynoplax campechiensis, new species (Decapoda, Brachyura, Goneplacidae), from the continental shelf of the Southwestern Gulf of Mexico. Bulletin du Muséum national d’Histoire naturelle , sér. 4, section A, 13(3-4): 688-724., cl 22 mm, cw 31 mm (USNM 298320). (C) Euphrosynoplax clausaGuinot, 1969Guinot, D. 1969. Recherches préliminaires sur les groupements naturels chez les Crustacés Décapodes Brachyoures. VII. Les Goneplacidae. Bulletin du Muséum national d’Histoire naturelle , sér. 2, 41(3): 688-724., holotype, cl 24 mm, cw 33 mm (USNM 65938) after Guinot (1969Guinot, D. 1969. Recherches préliminaires sur les groupements naturels chez les Crustacés Décapodes Brachyoures. VII. Les Goneplacidae. Bulletin du Muséum national d’Histoire naturelle , sér. 2, 41(3): 688-724.: 715, fig. 127). ap, apical lobe. ml, mesial lobe. Scales: 1 mm.

Figure 4 (A, D) Euphrosynoplax campechiensisVázquez-Bader & Gracia, 1991Vázquez-Bader, A.R. & Gracia, A. 1991. Euphrosynoplax campechiensis, new species (Decapoda, Brachyura, Goneplacidae), from the continental shelf of the Southwestern Gulf of Mexico. Bulletin du Muséum national d’Histoire naturelle , sér. 4, section A, 13(3-4): 688-724., male, cl 24 mm, cw 32 mm (USNM 267608). (A, B) Habitus in dorsal and ventral view, respectively. (C) Anterior cephalothorax. (D) Left cheliped in lateral view. Scales: 10 mm.

Figure 5 (A, D) Euphrosynoplax clausaGuinot, 1969Guinot, D. 1969. Recherches préliminaires sur les groupements naturels chez les Crustacés Décapodes Brachyoures. VII. Les Goneplacidae. Bulletin du Muséum national d’Histoire naturelle , sér. 2, 41(3): 688-724.. (A, B) Habitus, dorsal and ventral view, respectively, holotype male, cl 24 mm, cw 33 mm (USNM 65938). (C, D) Anterior cephalothorax and right cheliped in lateral view, male, cl 11 mm, cw 21 mm (USNM 250197). Scales: A-C, 10 mm; D, 0.5 mm.

How to cite

copy

Museu de Zoologia da Universidade de São Paulo Av. Nazaré, 481, Ipiranga, 04263-000 São Paulo SP Brasil, Tel.: (55 11) 2065-8133 - São Paulo - SP - Brazil
E-mail: einicker@usp.br

Acompanhe os números deste periódico no seu leitor de RSS

Versão para download de PDF

PDF

Inglês

Versões e tradução automática

Versão original do texto

English

Tradução automática

Google Translator
Microsoft Translator

Como citar

RIS

BIBTEX

Outros formatos de citação e exportação:

SciELO - Scientific Electronic Library Online
Rua Dr. Diogo de Faria, 1087 – 9º andar – Vila Clementino 04037-003 São Paulo/SP - Brasil
E-mail: scielo@scielo.org

Leia a Declaração de Acesso Aberto

Métricas

First record and a new species of <i>Euphrosynoplax</i> (Crustacea: Pseudorhombilidae) from the southwestern Atlantic

PlumX

Mensagem

[1] Both authors contributed equally to this manuscript.