Eptatretus grouseri McMillan, 1999: 114
Eptatretus grouseri
Mok et al. , 2001: 1026
Mincarone & McCosker, 2004: 164
Fernholm & Quattrini, 2008: 126
McCosker & Rosenblatt, 2010: 172
Knapp et al. , 2011: 404
Ruiz et al. , 2011: 30
Cruz-Mena & Angulo, 2015: 325
Angulo & Del Moral-Flores, 2016: 103
Mincarone, 2017: 802
Eptatretus
Eptatretus grouseri
Møller & Jones, 2007: 63
Review of the hagfishes (Myxinidae) from the Galapagos Islands, with descriptions of four new species and their phylogenetic relationships
Mincarone, M. M.
Plachetzki, D.
McCORD, C. L.
Winegard, T. M.
Fernholm, B.
Gonzalez, C. J.
Fudge, D. S.
Zoological Journal of the Linnean Society
2021
192
453
474
6FZ3R
MCMILLAN, 1999
McMillan
1999
[880,1353,1041,1066]
Myxini
Myxinidae
Eptatretus
Animalia
Myxiniformes
8
461
Chordata
species
grouseri
( FIGS 1, 2C; TABLES1–3)
Eptatretus grouseri McMillan, 1999: 114, fig. 2a [original description; type locality: Galapagos Islands, 00°14.6’S, 91°26.6’W, 2370 ft( 722 m); type series: holotype, CAS 86428; paratype, SIO 97-77(1)]. Eptatretus grouseri. – Mok et al., 2001: 1026. – Mincarone & McCosker, 2004: 164, figs 2, 3b. – Fernholm & Quattrini, 2008: 126. – McCosker & Rosenblatt, 2010: 172. – Knapp et al., 2011: 404. – Ruiz et al., 2011: 30. – Cruz-Mena & Angulo, 2015: 325. – Angulo & Del Moral-Flores, 2016: 103. – Mincarone, 2017: 802. Eptatretus Eptatretus grouseri.– Møller & Jones, 2007: 63.
Material examined: CAS86428, holotype( 370 mm), NE Fernandina Island, Punta Espinosa, 00°14’36”S, 91°26’36”W, 722 mdepth, submersible Johnson Sea Link, baited minnow trap, J. E. McCosker, R. G. Gilmore, 17 November 1995. SIO 97-77(ex CAS86428), paratype, 1( 138 mm), taken with holotype. CAS 201882, 2( 315–420 mm), Seymour Island, 00°21’42”S, 90°15’00”W, 648 mdepth, submersible Johnson Sea Link, baited minnow trap, C. Baldwin, J. E. McCosker, 25 July 1998. Diagnosis: Eptatretus grouseridiffers from all congeners, except E. aceroi Polanco-Fernandez & Fernholm, 2014from Colombia, E. profundus( Barnard, 1923)from South Africa, E. wandoensis Song & Kim, 2020from South Koreaand E. wayuu Mok et al., 2001from Colombia, by having five pairs (six pairs in one specimenof E. grouseri) of gill apertures arranged in a straight line and a 3/2 multicusp pattern of teeth. Eptatretus grouseridiffers from these fivegilled congeners by having: 44–48 total cusps (vs. 58 in E. aceroi, 40–43 in E. wandoensisand 41–43 in E. wayuu); 11–12 prebranchial pores (vs. 44 in E. aceroi, 14–18 in E. wandoensisand 24 in E. wayuu); 42–48 trunk pores (vs. 107 in E. aceroi, 48–51 in E. profundusand 38–40 in E. wayuu); 13–15 tail pores ( 9–11 in E. wandoensis); 71–79 total pores (vs. 174 in E. aceroiand 81–86 in E. profundus) ( Mok et al., 2001; Polanco-Fernandez & Fernholm, 2014; Mincarone, 2017; Song & Kim, 2020). Description:Body morphology, measurements and counts provided by McMillan (1999)and Mincarone & McCosker (2004). Distribution and habitat: Galapagos Islands: known from four specimenscollected in two localities: off Fernandina Island (Punta Espinosa), at 722 mdepth, and off north-eastern Seymour Island, at 648 mdepth ( Fig. 1).
CAS 86428
[1067,1329,1169,1191]
CAS
722
-0.24333334
Galapagos Islands
130
-91.44334
8
461
SIO 97-77
2
Galapagos
holotype
CAS 86428
CAS
NE Fernandina Island & J. E. McCosker
722
-0.24333334
Punta Espinosa
21
-91.44334
8
461
1
holotype
1995-11-17
R
8
461
1
holotype
CAS 86428
CAS
8
461
SIO 97-77
2
paratype
1998-07-25
CAS
C. Baldwin & J. E. McCosker
648
-0.36166665
Seymour Island
21
-90.25
8
461
CAS 201882, 2
1
paratype