Eptatretus grouseri, MCMILLAN, 1999

Mincarone, M. M., Plachetzki, D., McCORD, C. L., Winegard, T. M., Fernholm, B., Gonzalez, C. J. & Fudge, D. S., 2021, Review of the hagfishes (Myxinidae) from the Galapagos Islands, with descriptions of four new species and their phylogenetic relationships, Zoological Journal of the Linnean Society 192, pp. 453-474: 461-462

publication ID

C4F4F7F9-C496-4F28-AF92-0B317DC0EBEF

publication LSID

lsid:zoobank.org:pub:C4F4F7F9-C496-4F28-AF92-0B317DC0EBEF

persistent identifier

http://treatment.plazi.org/id/7C4C4E09-C013-9F17-FCC1-FB9AEAB9CD50

treatment provided by

Felipe

scientific name

Eptatretus grouseri
status

 

EPTATRETUS GROUSERI MCMILLAN, 1999  

GROUSER’ S HAGFISH

( FIGS 1, 2C; TABLES 1–3)

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 View Materials ; paratype, SIO 97-77 View Materials (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: CAS 86428 View Materials , holotype (370 mm), NE Fernandina Island, Punta Espinosa , 00°14’36”S, 91°26’36”W, 722 m depth, submersible Johnson Sea Link   , baited minnow trap, J. E. McCosker GoogleMaps   , R. G. Gilmore, 17 November 1995   . SIO 97-77 View Materials (ex CAS 86428 View Materials ), paratype, 1(138 mm), taken with holotype   . CAS 201882 View Materials , 2 View Materials (315–420 mm), Seymour Island , 00°21’42”S, 90°15’00”W, 648 m depth, submersible Johnson Sea Link   , baited minnow trap, C. Baldwin, J. E. McCosker, 25 July 1998 GoogleMaps   .

Diagnosis: Eptatretus grouseri   differs from all congeners, except E. aceroi Polanco-Fernandez & Fernholm, 2014   from Colombia, E. profundus ( Barnard, 1923)   from South Africa, E. wandoensis Song & Kim, 2020   from South Korea and E. wayuu Mok et al., 2001   from Colombia, by having five pairs (six pairs in one specimen of E. grouseri   ) of gill apertures arranged in a straight line and a 3/2 multicusp pattern of teeth. Eptatretus grouseri   differs from these fivegilled congeners by having: 44–48 total cusps (vs. 58 in E. aceroi   , 40–43 in E. wandoensis   and 41–43 in E. wayuu   ); 11–12 prebranchial pores (vs. 44 in E. aceroi   , 14–18 in E. wandoensis   and 24 in E. wayuu   ); 42–48 trunk pores (vs. 107 in E. aceroi   , 48–51 in E. profundus   and 38–40 in E. wayuu   ); 13–15 tail pores (9–11 in E. wandoensis   ); 71–79 total pores (vs. 174 in E. aceroi   and 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 specimens collected in two localities: off Fernandina Island (Punta Espinosa), at 722 m depth, and off north-eastern Seymour Island, at 648 m depth ( Fig. 1).

CAS

California Academy of Sciences

R

Departamento de Geologia, Universidad de Chile

Kingdom

Animalia

Phylum

Chordata

Class

Myxini

Order

Myxiniformes

Family

Myxinidae

Genus

Eptatretus

Loc

Eptatretus grouseri

Mincarone, M. M., Plachetzki, D., McCORD, C. L., Winegard, T. M., Fernholm, B., Gonzalez, C. J. & Fudge, D. S. 2021
2021
Loc

Eptatretus

Moller PR & Jones WJ 2007: 63
2007
Loc

Eptatretus grouseri

Mincarone MM 2017: 802
Angulo A & Del Moral-Flores LF 2016: 103
Cruz-Mena OI & Angulo A 2015: 325
Knapp A & Mincarone MM & Harwell H & Polidoro B & Sanciangco J & Carpenter K 2011: 404
Ruiz D & Chiriboga A & Banks S 2011: 30
McCosker JE & Rosenblatt RH 2010: 172
Fernholm B & Quattrini AM 2008: 126
Mincarone MM & McCosker JE 2004: 164
Mok H-K & Saavedra-Diaz LM 2001: 1026
2001
Loc

Eptatretus grouseri

McMillan CB 1999: 114
1999