Notostomus gibbosus A. Milne-Edwards, 1881

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 : 425-426

Notostomus gibbosus A. Milne-Edwards, 1881

( Fig. 27 A–C, 28 , 40 D)

Notostomus perlatus Spence Bate 1888: 831 , pl. 135, fig. 2.— Kemp, 1913: 66, pl. 7, fig. 10.— Chace 1936: 28; 1940: 170, fig. 42.— Holthuis 1951: 29.— Crosnier & Forest 1968: 1130.

Notostonzus brevirostris Spence Bate, 1888: 832 , pl. 135, fig. 3. (misspelling)

Notostoiniis perlatus Stebbing, 1893: 246 , pl. 13.

Notostomus brevirostris Moreira, 1901: 10 .

Notostomris brevirostris de Man, 1920: 46 .

Notostomus gibbosus A. Milne Edwards, 1881: 7 ; 1883, pl. 32.— de Man 1920: 46.— Chace 1936: 28.— Crosnier & Forest 1973: 49, fig. 13.— Chace 1986: 57.— Kensley et al. 1987: 288.— Pequegnat & Wicksten 2006: 101.— Poupin 2018: 102.

Material examined. 1 M, off Pernambuco, Abracos 2, ST#16, Leg.1, Midwater Tow, 680 m, 07° 36,25’ S/ 033° 99,17 ‘ W, 14 April 2017, MOUFPE: 18.430. 5 M and 4 F, Fernando de Noronha, Abracos 2 ST# 39/ Leg.2, Mid- water Tow, 800 m, 04° 52,42’ S/ 034° 3,51’ W; 04° 50,86’ S/ 034° 5,11’ W, 24 April 2017, MOUFPE: 18.414. 1 OF, Fernando de Noronha, Abracos 2 ST# 42/ Leg.2, Midwater Tow, 800 m, 03° 15,46’ S/ 031° 48,48’ W; 03° 15,43’ S/ 031° 48,37’ W, 27 April 2017, MOUFPE: 18.447. 3 M and 3 F, Fernando de Noronha, Abracos 2 ST#44A/ Leg. 2, Midwater Tow, 850 m, 03° 52,87’ S/ 032° 17,54’ W; 03° 52,21’ S/ 032° 16,45’ W, 28 April 2017, MOUFPE: 18.443. 1 M and 1 F, Ceará Chain, Abracos 2 ST#52A/ leg. 2, Midwater Tow, 984 m, 03° 43,26’ S/ 033° 25,15’ W; 03° 42,22’ S/ 033° 35,82’ W, 0 2 May 2017, MOUFPE: 18.425. 3 M and 2 F, Ceará Chain, Abracos 2 ST#54B/ Leg. 2, Midwater Tow, 1030 m, 03° 45,28 S/ 034° 41,06 ‘ W, 0 3 May 2017, MOUFPE: 18.422. 1 M, Ceará Chain, Abracos 2 ST# 59A/ Leg.2, Midwater Tow, 700 m, 03° 38’ S/ 036° 3,17’ W; 03° 38,13’ S/ 036° 2,35’ W, 0 5 May 2017, MOUFPE: 18.408.

Diagnosis. Rostrum with base without second lateral carina; stylocerite not reaching third segment of antennular peduncle; one continuous dorsal longitudinal lateral (gastro-orbital) carina; carapace with dorsal margin rather regularly convex in adults, no carina extending posterodorsaly from midlength of dorsal longitudinal lateral (gas- tro-orbital) carina, only the first longitudinal carina ventral to sub-hepatic, with carina supporting branchiostegal spine, latter extending nearly to posterior margin of carapace; abdomen with median dorsal carina on first somite (modified from Chace 1986).

Distribution: Western Atlantic: Bermuda, Gulf of Mexico, off Grenada, Lesser Antilles and Brazil (Ceará Chain (Seamounts), Fernando de Noronha, Pernambuco). Eastern Atlantic: Sierra Leone, Ghana, Senegal and Congo. Indo-Pacific Oceans: Chagosøerne, Australia (Broken Bay), Indonesia, Sumatra and Marquesas Islands ( Spence Bate 1888; Balss 1925; Crosnier & Forest 1973; Pequegnat & Wicksten 2006) ( Fig. 28 ).

Bathymetric distribution: 569–4000 m depth ( Kensley et al. 1987; Crosnier & Forest 1973), herein this species was found between 680–1030 m.

Remarks: The genus Notostomus presents nine species with worldwide distribution in mesopelagic zones, nevertheless until today only two species were recorded from Brazilian waters N. elegan s and N. gibbosus (for a comparison between species see Notostomus elegans remarks). Notostomus gibbosus was previously recorded from Brazil (off Pernambuco) by Moreira (1901) and Coelho & Ramos (1972) ( Fig. 26 ). In western Atlantic, especially in Brazilian waters, the distribution of this species is cosmopolitan, with its records still fragmented ( Fig. 28 ). In this paper, N. gibbosus is registered for the first time from an oceanic archipelago (Fernando de Noronha) and in Ceará Chain (Seamounts) located at Southwestern Atlantic.

Figures

FIGURE 26. Global geographic distribution of Notostomus elegans A. Milne-Edwards, 1881. Black circles = previous records; star = new record.

FIGURE 27. Notostomus gibbosus A. Milne-Edwards, 1881. A. Ovigerous Female, lateral view. B. Telson, dorsal view (MOUFPE: 18.447). Scale bar = 1 cm.

FIGURE 28. Global geographic distribution of Notostomus gibbosus A. Milne-Edwards, 1881. Black circles = previous records; star = new record.

FIGURE 40. Deep-sea shrimps of the families Acanthephyridae Spence Bate, 1888 and Oplophoridae Dana, 1852 being: A. Ephyrina ombango Crosnier & Forest, 1973 (MOUFPE: 18.399). B. Meningodora compsa (Chace, 1940) (MOUFPE: 18.354). C. Notostomus elegans A. Milne-Edwards, 1881 (MOUFPE: 18.401). D. Notostomus gibbosus A. Milne-Edwards, 1881 (MOUFPE: 18.447). E. Janicella spinicauda (A. Milne-Edwards, 1883) (MOUFPE: 15.661). F. Oplophorus gracilirostris A. Milne-Edwards, 1881 (MOUFPE: 15.673), with material collected in Northwestern Brazil.