Ephyrina benedicti Smith, 1885

Alves-Júnior, Flavio De Almeida, Silva, Elinai Dos Santos, Araújo, Marina De Sá Leitão Câmara De, Cardoso, Irene, Bertrand, Arnaud & Souza-Filho, Jesser F., 2019, Taxonomy of deep-sea shrimps of the Superfamily Oplophoroidea Dana 1852 (Decapoda: Caridea) from Southwestern Atlantic, Zootaxa 4613 (3), pp. 401-442 : 414

Ephyrina benedicti Smith, 1885

( Figs. 13 A–C, 14 )

Ephyrina benedicti Smith, 1885: 506 .— De Man 1920: 46.— Crosnier & Forest 1973: 65, figs. 18, 19a.— Chace 1986: 33 (Key).— Cardoso & Young 2005: 33 , figs. 24–28.— Pequegnat & Wicksten 2006: 98. Tropiocaris planipes Spence Bate, 1888: 835 , pl. 136, fig. 1.

Material examined. 1 M, Ceará Chain, Abracos 2 ST#54B/ Leg. 2, Midwater Tow , 1030 m, 03° 45,28 S / 034° 41,06 ‘ W, 0 3 May 2017, MOUPE :19.417.

Diagnosis: Carapace with rostrum short reaching 1/4 of scaphocerite length, unarmed; antennal and branchiostegal spine present, but not prominent; branchiostegal spine without distinct carina. Abdomen not dorsally carinate on all somites; somites 3 and 4 with posteromesial tooth, the one of somite 3 distinctly strong. Telson overreaching mesial branch of uropod, row of dorsolateral spines submarginal, between 22–27 pairs (modified from Cardoso & Young 2005).

Distribution: Western Atlantic: South Greenland, United States, Gulf of Mexico, Brazil (Seamounts (Ceará Chain), Bahia, Espírito Santo). Eastern Atlantic: south-west Ireland, Portugal (Canary Archipelago), Gabon, Saint Tomé Island. Indo-Pacific Oceans: northeastern Philippine Sea, Indonesia, west of Bonin Islands, Japan, Hawaii ( Crosnier & Forest 1967; Chace 1986; Crosnier 1987; Cardoso & Young 2005; Pequegnat & Wicksten 2006) ( Fig.14 ).

Bathymetric distribution: 300–5000 m depth ( Crosnier & Forest 1973; Chace 1986; Cardoso & Young 2005; Burghart et al. 2007; 2017), herein this species was found in Ceará Chain at depth of 1030 m.

Remarks: According to Crosnier & Forest (1973) and Cardoso & Young (2005), the closest species of Ephyrina benedicti is E. bifida Stephensen, 1923 , but these species differ from each other in the following way (character of E. bifida in parentheses): abdominal somite 3 with a simple dorsal tooth ( Fig. 13B ) (vs abdominal somite 3 present a bifid dorsal tooth); telson with 22–27 dorsolateral spines ( Fig. 13C ) (vs telson with 4–7 dorsolateral spines). Ephyrina benedicti has a cosmopolitan distribution, but despite its wide occurrence in all oceans ( Fig. 14 ), few records were made in Western Atlantic, especially in Southwest Atlantic, being the first report of genus from Bra- zilian waters made by Cardoso & Young (2005), with specimens collected in Campos Basin in States of Bahia and Espírito Santo. We provide herein the second report of the species E. benedicti in Brazilian waters highlighting the first observation in seamounts located in Northwestern Brazil.

Figures

FIGURE 13. Ephyrina benedicti Smith, 1885. A. Female, lateral view. B. Telson, dorsal view. C. Abdomen, with somites 1–6 in dorsal view. (MOUPE: 19.417). Scale bar = 1 cm.

FIGURE 14. Global geographic distribution of Ephyrina benedicti Smith, 1885. Black circles = previous records; star = new record.