86: MYCfOPHIDAE (LANTERNFISHES)
D 14-17; A 16-20; P 12-15; GR (6-7)+(15-19); AO (8- 12)+(8-11); Prc
(3-5)+ 1.
Attains 132 mm. High-oceanic, mesopelagic; upper 200
m (night), but deeper in region of Subtropical Convergence. Circum global species between Subtropical Convergence and Antarctic Continent.
86.53 Gymnoscopelus (Gymnoscopelus) nicholsi
(Gilbert, 1911)
Lampanyctus nicholsi Gilbert, 1911: 17, Fig. 1 (47°S, 60 0 W); Norman,
1930: 326 (in part). Gymnoscopelus aphya Gunther, 1873: 91. Gymnoscopelus (Gymnoscopelus) nicholsi: Andriashev, 1962: 270*; Hulley, 1981:
255*. Gymnoscopelus (Gymnoscopelus) aphya: McGinnis, 1974: 199*.
D 17-19; A 19-21; P 13-15; GR (9-12)+(21-24); AO (9-12)+(6-9); Prc
5-8.
Attains 161 mm. High-oceanic, mesopelagic; upper 100
m (night), but deeper in region of Subtropical Convergence. Not yet recorded from our area. Circumglobal
species between Subtropical Convergence and Antarctic
Polar Front.
86.53 Gymnoseopelus (G.) nieholsi: 12.5 em SL.
86.54 Gymnoscopelus (Gymnoscopelus) opisthopterus
Fraser-Brunner, 1949
Gymnoscopelus opisthopterus Fraser-Brunner, 1949: 1094, Fig., 1102,
Fig. 13 (64°22.6'S, 106°33.3'E). Lampanyctus braueri: Norman, 1930: 327
(in part). Gymnoscopelus (Gymnoscopelus) opisthopterus: Andriashev,
1962: 268*; McGinnis, 1974: 196*; Hulley, 1981: 258*.
D 15-18; A 16-18; P 12-14; GR (7-9)+(16-20); AO (9-10)+(7-8); Prc
4+ 1.
Attains 162 mm. High-oceanic, bathypelagic; adults
usually deeper than 500 m, but larvae and juveniles in 66 -
200 m. Not yet recorded from our area. Circumglobal
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86.54 Gymnoseopelus (G.) opisthopterus: 13 em SL.
300
species south of Antarctic Polar Front, but north to 40 0 S in
western South Atlantic.
Subgenus Naso/ychnus Smith, 1933
More than 4 species; possibly 4 in our area.
KEY TO SPECIES
la Antorbitalluminous tissue confined to upper
Yz of orbit, never extending to anteroventral
margin of eye, although black pigmented skin
may do so ....................................................... G. (N.) fraseri
Ib Antorbitalluminous tissue extending below
upper Yz of orbit to anteroventral margin of eye ........................ 2
2a Distance VOS-SAO j about 2 times in distance
SAO j -SA02; total GR 25-31; eye well above
upper lip, the vertical distance from upper lip
to lower margin of eye at middle of orbit
greater than length of P base ......... ............... G. (N.) hintonoides
2b Distance VOS-SAO j about equal to distance
SAO j -SA02; GR 30-36; vertical distance above
upper lip at middle of orbit equal to or less than length
of P base ......................................................................... 3
3a CPL greater than VJ; adipose fin base narrow,
about equal to 1 photophore-diameter; LL
narrow, about equal to 1 photophore-diameter;
V tips heavily pigmented .................................. G. (N.) piabilis
3b CPL equal to or less than VJ; adipose fin
base broad, about equal to 2 photophorediameters; LL about equal to 2 photophorediameters; V tips not pigmented .................. G. (N.) microlampas
86.55 Gymnoscopelus (Nasolychnus) fraseri
(Fraser-Brunner, 1931)
Lampanyctus fraseri Fraser-Brunner, 1931: 224, Fig. 4 (03°18'S,
05°17'E; type-locality is erroneous). Gymnoscopelus (Nasolychnus)
fraseri: McGinnis, 1974: 205*; Hulley, 1981: 260*.
D 16-18; A 17-20; P 12-15; GR (7-9)+(17-20); AO (9-11)+(7-10); Prc
(3-5)+ 1.
Attains 88 mm. High-oceanic, mesopelagic. Not yet
recorded from our area, but has been taken at 43°17'S,
48°55'E. Circumglobal between Subtropical Convergence
and Antarctic Polar Front.
86.55 Gymnoseopelus (N.) fraseri: 7.5 em SL.
D 14-17; A 16-20; P 12-15; GR (6-7)+(15-19); AO (8- 12)+(8-11); Prc
(3-5)+ 1.
Attains 132 mm. High-oceanic, mesopelagic; upper 200
m (night), but deeper in region of Subtropical Convergence. Circum global species between Subtropical Convergence and Antarctic Continent.
86.53 Gymnoscopelus (Gymnoscopelus) nicholsi
(Gilbert, 1911)
Lampanyctus nicholsi Gilbert, 1911: 17, Fig. 1 (47°S, 60 0 W); Norman,
1930: 326 (in part). Gymnoscopelus aphya Gunther, 1873: 91. Gymnoscopelus (Gymnoscopelus) nicholsi: Andriashev, 1962: 270*; Hulley, 1981:
255*. Gymnoscopelus (Gymnoscopelus) aphya: McGinnis, 1974: 199*.
D 17-19; A 19-21; P 13-15; GR (9-12)+(21-24); AO (9-12)+(6-9); Prc
5-8.
Attains 161 mm. High-oceanic, mesopelagic; upper 100
m (night), but deeper in region of Subtropical Convergence. Not yet recorded from our area. Circumglobal
species between Subtropical Convergence and Antarctic
Polar Front.
86.53 Gymnoseopelus (G.) nieholsi: 12.5 em SL.
86.54 Gymnoscopelus (Gymnoscopelus) opisthopterus
Fraser-Brunner, 1949
Gymnoscopelus opisthopterus Fraser-Brunner, 1949: 1094, Fig., 1102,
Fig. 13 (64°22.6'S, 106°33.3'E). Lampanyctus braueri: Norman, 1930: 327
(in part). Gymnoscopelus (Gymnoscopelus) opisthopterus: Andriashev,
1962: 268*; McGinnis, 1974: 196*; Hulley, 1981: 258*.
D 15-18; A 16-18; P 12-14; GR (7-9)+(16-20); AO (9-10)+(7-8); Prc
4+ 1.
Attains 162 mm. High-oceanic, bathypelagic; adults
usually deeper than 500 m, but larvae and juveniles in 66 -
200 m. Not yet recorded from our area. Circumglobal
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86.54 Gymnoseopelus (G.) opisthopterus: 13 em SL.
300
species south of Antarctic Polar Front, but north to 40 0 S in
western South Atlantic.
Subgenus Naso/ychnus Smith, 1933
More than 4 species; possibly 4 in our area.
KEY TO SPECIES
la Antorbitalluminous tissue confined to upper
Yz of orbit, never extending to anteroventral
margin of eye, although black pigmented skin
may do so ....................................................... G. (N.) fraseri
Ib Antorbitalluminous tissue extending below
upper Yz of orbit to anteroventral margin of eye ........................ 2
2a Distance VOS-SAO j about 2 times in distance
SAO j -SA02; total GR 25-31; eye well above
upper lip, the vertical distance from upper lip
to lower margin of eye at middle of orbit
greater than length of P base ......... ............... G. (N.) hintonoides
2b Distance VOS-SAO j about equal to distance
SAO j -SA02; GR 30-36; vertical distance above
upper lip at middle of orbit equal to or less than length
of P base ......................................................................... 3
3a CPL greater than VJ; adipose fin base narrow,
about equal to 1 photophore-diameter; LL
narrow, about equal to 1 photophore-diameter;
V tips heavily pigmented .................................. G. (N.) piabilis
3b CPL equal to or less than VJ; adipose fin
base broad, about equal to 2 photophorediameters; LL about equal to 2 photophorediameters; V tips not pigmented .................. G. (N.) microlampas
86.55 Gymnoscopelus (Nasolychnus) fraseri
(Fraser-Brunner, 1931)
Lampanyctus fraseri Fraser-Brunner, 1931: 224, Fig. 4 (03°18'S,
05°17'E; type-locality is erroneous). Gymnoscopelus (Nasolychnus)
fraseri: McGinnis, 1974: 205*; Hulley, 1981: 260*.
D 16-18; A 17-20; P 12-15; GR (7-9)+(17-20); AO (9-11)+(7-10); Prc
(3-5)+ 1.
Attains 88 mm. High-oceanic, mesopelagic. Not yet
recorded from our area, but has been taken at 43°17'S,
48°55'E. Circumglobal between Subtropical Convergence
and Antarctic Polar Front.
86.55 Gymnoseopelus (N.) fraseri: 7.5 em SL.