Nominostomias Regan & Trewavas, 1930

Villarins, Bárbara T, Fischer, Luciano G, Prokofiev, Artem M & Mincarone, Michael M, 2023, Four new species of dragonfish genus Eustomias (Stomiiformes: Stomiidae: Melanostomiinae) from the western tropical Atlantic, with remarks on Eustomias minimus Clarke, 1999, Zoological Journal of the Linnean Society 202 (1), pp. 1-17 : 7

Subgenus Nominostomias Regan & Trewavas, 1930

Type species: Eustomias bibulbosus Parr, 1927 .

Diagnosis: The species in the subgenus Nominostomias have: three well-developed pectoral-fin rays; seven pelvic-fin rays; barbel stem with little or no external pigment, without appendages; one or two terminal bulbs with a projection or filament; no branches proximal to terminal bulbs; no ventral groove posterior to pectoral-fin base; photophore count high, in ventral series (IC) 69–80, in lateral series (OC) 63–73; vertebrae in continuous series 64–71; premaxillary and mandibular teeth 9–20 and 9–29, respectively; mobile teeth higher in number than fixed teeth ( Gibbs et al. 1983, Prokofiev 2018).