Eustomias bibulbosus Parr, 1927

Villarins, Bárbara T., Dario, Fabio Di, Eduardo, Leandro N., Lucena-Frédou, Flávia, Bertrand, Arnaud, Prokofiev, Artem M. & Mincarone, Michael M., 2022, Deep-sea dragonfishes (Teleostei: Stomiiformes) collected from off northeastern Brazil, with a review of the species reported from the Brazilian Exclusive Economic Zone, Neotropical Ichthyology (e 220004) 20 (2), pp. 1-78 : 47-49

Eustomias bibulbosus Parr, 1927

( Fig. 15A )

Diagnosis. Eustomias bibulbosus differs from congeners by the presence of 3 well developed pectoral-fin rays; long chin barbel (60–85% SL), with two terminal bulbs separated by a long interspace; distal bulb usually 0.9–1.6% SL; terminal filament long (22–33% SL), rarely with 1 or 2 branches; chin barbel stem darkly pigmented; lower jaw about as long as upper jaw and not upturned at tip; deep groove on belly absent; preorbital and suborbital organs absent (Gibbs et al., 1983; McEachran, Fechhelm, 1998).

Geographical distribution. Previous records are restricted to the western North

Atlantic, between 40ºN and 13ºN (Vinnichenko, 1997; McEachran, Fechhelm, 1998;

Harold, 2003; Moore et al., 2003), with records off United States, Bermudas and

Suriname (Parr, 1927; Bekker et al., 1975; Gibbs et al., 1983; Judkins, Haedrich, 2018).

Eustomias bibulbosus is therefore reported for the first time in the South Atlantic based on one specimen collected off Pernambuco State in the Brazilian EEZ, at 680 m depth

( Fig. 14B ).

Specimen examined. 1: NPM 4642, 1 (87 mm), AB2#16.

Figures

FIGURE 14 | Records of species of the Melanostomiinae (A–F) collected during the ABRACOS expeditions off northeastern Brazil. Oceanic islands: RA, Rocas Atoll; FN, Fernando de Noronha Archipelago.

FIGURE 15 | A. Eustomias bibulbosus, NPM 4642, 87 mm SL; B. Eustomias braueri, NPM 4816, 56 mm SL; C. Eustomias brevibarbatus, NPM 4646, 95 mm SL; D. Eustomias enbarbatus, NPM 4819, 60 mm SL; E. Eustomias minimus, NPM 4881, 69 mm SL; F. Eustomias schmidti, NPM 4882, 68 mm SL. Scale bars = 10 mm.