DOI: 10.5281/zenodo.15154926
title: TABLE 1 in A new species of Eustomias (Nominostomias) (Stomiiformes: Stomiidae) from the Kermadec Ridge-Tonga Trench region, western South Pacific Ocean, with notes on the barbel morphology of E. trewavasae

description: TABLE 1. Selected counts and measurements of Eustomais robertsi n. sp. compared with other species in Nominostomias Group III. Significant differences in bold.
Eustomias (Nominostomias) robertsi n. sp.Data taken from Gibbs et al 1983Paratype NMNZ P.058340Holotype NMNZ P.013765E. suluensis * E. bertelseni *E. kreffti *E. medusa *E. melanonemaE. melanostigma *E. melanostigmoides *E. multifilis *E. posti *144.6 mm SL232.1 mm SLn = 2, 109.1–138.3 mm SLn = 3, 66.5– 93.2 mm SLn = 10, 76.4–125.2 mm SLn = 17, 73.0–152.8 mm SLn = 10, 67.6– 147.8 mm SLn = 10, 57.5– 135.8 mm SLn = 17, 67.5–165.0 mm SLn = 1, 144.5 mm SLn = 9, 81.3–156.3 mm SLD242524–2524–2623–2624–2723–2623–2623–262324–26A393737–3936–3833–3936–4035–4036–4037–403436–39P33333333333V77777777777OV333332–3332–3330–3432–3530–3331–3532–343032–34VAL2019181818–1917–2017–2017–2117–201817–19OA535250–5149–5149–5250–5448–5149–5451–534851–52IP77777777777PV27343331–3330–3432–3531–3331–3432–343032–34VAV201916–1817–1816–2017–2017–1917–2016–191716–18AC211919–2019–2017–2017–2017–2017–2018–201517–20IC757975–78 3 short75–7873–7875–7973–7875–7875–796974–77 4 longTerminal filament numberw. multi2 long+ 3–97–10 short5–9 short, no3–7 short, no4–6 short, simple,w multi33bulblets4 longshortcomplexbulbletsbulbletsno bulblets16 shortbulbletsVentral grooveabsentabsentNRNRNRNRNRNRNRNRNRMeasurements mm (% SL)Barbel length (incl filaments)111.1 (76.8% SL)174.9 (75.3% SL)66.4 (45.9%97.7567–86% SL (> 80Barbel lengthSL)(42.1% SL)52–59% SL43–60% SL37–44% SL36–65% SL76–92% SL31–82% SLmmSL)45% SL43–50% SLProximal bulb position**62.4 (43.1% SL)93.4 (40.2% SL)Eustomias (Nominostomias) robertsi n. sp.Data taken from Gibbs et al 1983ParatypeHolotypeNMNZNMNZE.E.E.P.058340P.013765E. suluensis * E. bertelseni *E. kreffti *E. medusa *melanonemamelanostigma *melanostigmoides * E. multifilis *E. posti *0.9 (0.6%1.2 (0.5%0.2–0.5%0.8–1.2%Proximal bulb diameterSL)SL) 0.7–0.8% SL0.9–1.4% SL1.0–1.2% SLSL0.7–1.5% SL0.3–1.6% SL0.3–0.7% SL0.7% SLSL63.9 (44.2%94.25Distal bulb position†SL)(40.6% SL)Distal bulb greatest length2.5 (1.7% SL)3.5 (1.5% SL) 1.2–1.3% SL0.9–1.5% SL1.1–1.5% SL0.5–1.1% SL1.7–2.8% SL1.0–2.2% SL0.7–1.5% SL0.8% SL0.8–2.0% SL2.5/1.05Distal bulb length/width(2.4)3.5/1.5 (2.3)~ 2 xProximal-Distal bulb length0.25 (0.2%0.25 (0.1%0.5–2.0%1.9–2.6%inter-bulb distance ‡SL)SL) 2.4–2.8% SL 2.7–3.0% SLSL0.8–2.4%SL1.4–3.5% SL2.1–4.1%SL1.0–2.4% SL1.6% SLSLInter bulb distance/distancebulb0.01 x0.07 x1.9–2.4 x2.0–3.0 x0.4–1.6 x1.4–3.6 x0.6–1.8 x1.7–3.8 x1.6–2.4 x1.9 x1.3–2.5 xDistal bulb/proximal bulb2.8 x2.9 x1.5-1.8 x11.2-1.9 x1.5-3.0 x1.5-2.5 x1.2-2.5 x1.5-4.3 x1.2 x0.9–2.6 xTerminal filament length44 (30.4%97.5 (42%17–~21%13–29%(longest)SL)SL)15–20% SLSL23–35% SL5–13% SL<6% SL<10% SL<9% SL1.3% SLSLSec terminal filament (second22.6 (15.6%65.7 (28.3%longest)SL)SL)Terminal Filament Bulbletlength1.350.4Ratio main/sec barbel1.91.5Premaxilla teeth (depressible)1312Maxillary teeth (depressible)816Mandibular teeth (depressible)1720Mid-dorsal spots+3+398–987–887–98–977–8122.3199.5Pre-dorsal length(84.6% SL)(85.9% SL)83.2% SL83.7% SL83.8% SL82.4% SLNR84.6% SL83.9% SL86.2% SL84.1% SLEustomias (Nominostomias) robertsi n. sp.Data taken from Gibbs et al 1983ParatypeHolotypeNMNZNMNZE.E.E.P.058340P.013765E. suluensis * E. bertelseni *E. kreffti *E. medusa *melanonemamelanostigma *melanostigmoides *E. multifilis *E. posti *106.6171.2Pre-anal length(73.7% SL)(73.8% SL)69.6% SL71.3% SL72.1% SL71.3% SLNR76.3% SL72.4% SL76.0% SL72.3% SL85.7 (52.3%131.5Pre-pelvic lengthSL)(56.6% SL)56.1% SL55.9% SL56.9% SL55.3% SLNR57.1% SL58.1% SL59.2% SL57.4% SL24.3 (16.8%32.8 (14.3%HLSL)SL)13.7% SL12.2% SL12.2% SL11.1% SLNR13.2% SL13.5% SL14.0% SL13.4% SL7.9 (5.5%6.5 (2.8%SnLSL)SL)damaged5.4% SL3.7% SL3.5% SLNR6.2% SL6.0% SL4.7% SL5.1% SL6.85 (2.9%Orbit Length4 (2.3% SL)SL)2.6% SL2.3% SL2.7% SL2.7% SLNR2.9% SL2.5% SL2.9% SL2.8% SLPost Orb photophore diam.0.7 (0.7%)1.5 (0.9%)0.7% SL0.6% SL0.4% SL0.4% SLNR0.7% SL0.7% SL1.7% SL1.6% SL36.1 (25%54.9 (23.6%Anal fin LengthSL)SL)25.7% SL24.5% SL24.6% SL23.5% SLNR24.0% SL25.0% SLNR26.5% SL1.8 (1.2%2.9 (1.2%Caudal Peduncle least depthSL)SL)1.4% SL2.30%1.4% SL1.5% SLNR2.2% SL1.5% SLNR1.7% SLDistributionSouth–west PacificPhilippinesEast Indian OceanTropical AtlanticNorth-west Pacific/ Oahutropical eastern AtlanticCaribbean to western central PacificHawaiisouth–western Australiasubtropical western south Atlantic
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* Single percentage values are from primary types only (Gibbs et al. 1983)
** From base of barbel to start of bulb
† From base of barbel to origin of bulb
‡ Posterior proximal-anterior distal bulb length
description: Published as part of Stewart, Andrew L., Kenaley, Christopher P. & Sutton, Tracy, 2024, A new species of Eustomias (Nominostomias) (Stomiiformes: Stomiidae) from the Kermadec Ridge-Tonga Trench region, western South Pacific Ocean, with notes on the barbel morphology of E. trewavasae, pp. 101-103 in Zootaxa 5458 (1) on page 101, DOI: 10.11646/zootaxa.5458.1.5, http://zenodo.org/record/11348394