Meningodora vesca ( Smith, 1886 )

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 : 421-422

Meningodora vesca ( Smith, 1886)

( Fig. 23 A–B, 24 )

Notostomus viscus Smith, 1886: 189 (nomen nudum).

Notostomus vescus Smith, 1886: 676 .— de Man 1920: 46.— Chace 1936: 28; 1940: 153, figs. 29–30; 1947: 21.— Kemp 1913: 66.

Acanthephyra brevirostris Spence Bate, 1888: 751 .

Acanthephyra batei Stebbing, 1905: 107 , pl. 24.— Faxon 1895: 167.— Lenz & Strunck 1914: 327.

Acanthephyra Batei — Kemp, 1906: 22.— Hansen 1908: 77, pl. 4, fig. 2a.— de Man 1920: 41.

Notostomus Batei — Balss, 1925: 267.

Meningodora vesca — Sivertsen & Holthuis 1956: 13.— Crosnier & Forest 1968: 1130; 1973: 46.— Rice 1967: 5, fig. 11.—Zariquiey Alvarez 1968: 87.— Foxton 1970: 955, fig. 6.— Chace 1986: 50.— Kensley et al. 1987: 286.— Cardoso 2006: 1, figs. 1–3.

Material examined. 1 M and 2 F, Rocas Atoll, Abracos 1 ST# 14/ Leg.1, Midwater Tow, 510 m, 03° 58’ S / 034° 03,37’ W, 6 October 2015, MOUFPE: 15.585. 2 F, Fernando de Noronha , Abracos 2 ST# 39/ Leg. 2, Midwater Tow, 800 m, 04° 52,43’ S / 034° 3,51’ W; 04° 50,86’ S / 034° 5,11’ W, 24 April 2017, MOUFPE : 18.412. 2 M and 1 dandified, Fernando de Noronha , Abracos 2 ST#39/ Leg. 2, Midwater Tow, 800 m, 04° 52,43’ S / 034° 3,51’ W; 04° 50,86’ S / 034° 5,11’ W, 24 April 2017, MOUFPE : 18.413. 2 F, Fernando de Noronha , Abracos 2 ST#44A/ Leg. 2, Midwater Tow, 850 m, 03° 52,21’ S / 032° 17,54 ‘ W; 03° 52,28’ S / 032° 16,45’ W, 28 April 2017, MOUFPE : 18.468. 2 F, Rocas Atoll , Abracos 2 ST# 53A/ Leg. 2, Midwater Tow, 610 m, 03° 48,99’ S / 033° 59,217’ W; 03° 50,05 ‘ S / 033° 58,77’ W, 2 May 2017, MOUFPE : 18.453.

Diagnosis: Carapace with rostrum a half of scaphocerite length, ventral margin slightly convex, between 4–2 teeth, dorsal margin between 11–12 teeth; carapace dorsal margin carinate throughout entire length; antennal spine present; branchiostegal spine present, well developed, without distinct carina; supraorbital and pterygostomian spine absent; cervical groove, suprabranchial carina and hepatic groove absent; gastro-orbital carina present. Scaphocerite with blunt apex, outer margin with distal tooth. Abdomen dorsally carinate on somites 3–5; somites 4–6 with posteromesial tooth; somite 6 at least 1 1/2 times as long as height. Telson sulcate in dorsal midline, with three pairs of dorsolateral stout setae and one pair of distal stout setae (modified from Cardoso 2006).

Distribution: Western Atlantic: Bermudas, Bahamas, Brazil (Rocas Atoll, Fernando de Noronha and Rio de Janeiro). Eastern Atlantic: Portugal (Azores Island, Canaries Island), Gabon, Angola. Indian-Pacific Oceans: Bay of Bengal, Philippines, Indonesia ( Chace 1986; Crosnier 1987; Cardoso 2006) ( Fig. 24 ).

Bathymetric distribution: 650–2500 m depth (Chace 1986; Crosnier 1987; Cardoso 2006), herein this species was found between 510–850 m, thus extending its bathymetric distribution from shallow waters.

Remarks: The material analyzed herein fits well with all diagnostic characters described by Chace (1946) and Cardoso (2006), with the closest being M. compsa (see the main differences in remarks of M. compsa ). Meningodora vesca is widespread distributed in Atlantic, Indian and Pacific Oceans ( Fig. 24 ), with its first record in South- western Atlantic made by Cardoso (2006) from State of Rio de Janeiro. Meningodora vesca presents a cosmopolitan distribution, with its records still fragmented, with this species being collected in bathypelagic zones. Thus, the present record is the second observation of species from Brazilian waters, suggesting that this species is much more widely distributed than currently assumed.

Figures

FIGURE 23. Meningodora vesca (Smith, 1886). A. Male, lateral view. B. Abdomen, with somites 1–6 in dorsal view (MOUF- PE: 18.413). Scale bar = 1 mm.

FIGURE 24. Global geographic distribution of Meningodora vesca (Smith, 1886). Black circles = previous records; star = new record.