86: MYCfOPHIDAE (LANTERNFISHES)
Attains 70 mm. Pseudoceanic, pelagic; 325 - 475 m (day);
40 - 250 m (night). Over west coast continental shelf/slope
southwards to 24°S. Amphitropical species in Atlantic
(western sector: tropical waters to 42°N; eastern sector:
southwards from Mauritanian Upwelling Region to our
area).
86.39 Diaphus taaningi: 4 em SL.
86.40 Diaphus thiollieri
Fowler, 1934
Diaphus thiollieri Fowler, 1934: 289, Fig. 48 (09°31'50"N, 124°40'E);
Nafpaktitis, 1978: 48*; Kawaguchi & Shimizu, 1978: 74*; Gj0saeter,
1981: 220*; Gj0saeter & Beck, 1981: 257.
D 15-17; A 14-16; P 10-12; GR (6-8)+(14-16); AO (5-7)+(3-5).
Attains 100 mm. High-oceanic, mesopelagic. Mozambique
Channel southwards to about 26°S. Indian Ocean (Arabian
Sea to 12°S and off Sumatra) and in southeast Asian seas.
86.40 Diaphus thiollieri: 5 em SL female (after Nafpaktitis, 1978).
86.41 Diaphus watasei
Jordan & Starks, 1904
Diaphus watasei Jordan & Starks, 1904: 580, Fig. (off Atami, Sagami
Bay, Japan); Nafpaktitis, 1978: 29*; Gj0saeter & Beck, 1981: 257*.
?Diaphus elucens (non Brauer): Smith, SFSA No. 201* (in part).
D 14-15; A 14-15; P 11; GR (4-6)+(13-15); AO (6-7)+(5- 6).
Attains 170 mm. Pseudoceanic, epibenthic; 100 - 550 m.
Over east coast continental shelf/slope southwards to about
296
30 0 S; on east African continental shelf south of about 02°S;
west coast of Madagascar and off Japan.
86.41 Diaphus watasei: 10 em SL.
Genus Diogenichthys Bolin, 1939
Maxilla expanded posteriorly, extending to or a little
beyond rear margin of orbit; A base longer than Dbase. Dn
present; Vn absent; 5 PO; 4 VO; AO series divided into
AOa and AOp; one Pol. Mature males with large, supracaudal luminous gland; mature females with smaller, infracaudal luminous gland. Three species; 2 in our area.
KEY TO SPECIES
1 a Prc)-Pr~ interspace equal to or longer than
last AOp-Prc) interspace; SAO) above V03- V04
interspace; Dn poorly developed in mature
males; GR 12-15 ................................................. D. at/anticus
1 h Prc)-Pr~ interspace Yz or less than Yz as long
as last AOp-Prc) interspace; SAO) directly
over or slightly behind V04; Dn well developed
in mature males; GR 11-12 .................................... D. panurgus
86.42 Diogenichthys at/anticus
(Taning, 1928)
Myctophum laternatum atlanticum Hming, 1928: 56 (20000'N, 21°55'W).
Myctophum laternatum (non Garman): Norman, 1930: 324. Diogenichthys
at/anticus: Nafpaktitis & Nafpaktitis, 1969: 13*; Hulley, 1972: 220; 1981:
55*; 1984: 74*.
D 10-12; A 15-18; P 12-14; GR 2+(10-13); AO (5-8)+(3-4). Mature
males with single, large, supracaudalluminous gland, extending 75% (or
less) of distance from procurrent C rays to base of adipose fin; mature
females with 2-4 small, coalesced luminous patches infracaudally.
86.42 Diogenichthys at/anticus: 2 em SL.
Attains 70 mm. Pseudoceanic, pelagic; 325 - 475 m (day);
40 - 250 m (night). Over west coast continental shelf/slope
southwards to 24°S. Amphitropical species in Atlantic
(western sector: tropical waters to 42°N; eastern sector:
southwards from Mauritanian Upwelling Region to our
area).
86.39 Diaphus taaningi: 4 em SL.
86.40 Diaphus thiollieri
Fowler, 1934
Diaphus thiollieri Fowler, 1934: 289, Fig. 48 (09°31'50"N, 124°40'E);
Nafpaktitis, 1978: 48*; Kawaguchi & Shimizu, 1978: 74*; Gj0saeter,
1981: 220*; Gj0saeter & Beck, 1981: 257.
D 15-17; A 14-16; P 10-12; GR (6-8)+(14-16); AO (5-7)+(3-5).
Attains 100 mm. High-oceanic, mesopelagic. Mozambique
Channel southwards to about 26°S. Indian Ocean (Arabian
Sea to 12°S and off Sumatra) and in southeast Asian seas.
86.40 Diaphus thiollieri: 5 em SL female (after Nafpaktitis, 1978).
86.41 Diaphus watasei
Jordan & Starks, 1904
Diaphus watasei Jordan & Starks, 1904: 580, Fig. (off Atami, Sagami
Bay, Japan); Nafpaktitis, 1978: 29*; Gj0saeter & Beck, 1981: 257*.
?Diaphus elucens (non Brauer): Smith, SFSA No. 201* (in part).
D 14-15; A 14-15; P 11; GR (4-6)+(13-15); AO (6-7)+(5- 6).
Attains 170 mm. Pseudoceanic, epibenthic; 100 - 550 m.
Over east coast continental shelf/slope southwards to about
296
30 0 S; on east African continental shelf south of about 02°S;
west coast of Madagascar and off Japan.
86.41 Diaphus watasei: 10 em SL.
Genus Diogenichthys Bolin, 1939
Maxilla expanded posteriorly, extending to or a little
beyond rear margin of orbit; A base longer than Dbase. Dn
present; Vn absent; 5 PO; 4 VO; AO series divided into
AOa and AOp; one Pol. Mature males with large, supracaudal luminous gland; mature females with smaller, infracaudal luminous gland. Three species; 2 in our area.
KEY TO SPECIES
1 a Prc)-Pr~ interspace equal to or longer than
last AOp-Prc) interspace; SAO) above V03- V04
interspace; Dn poorly developed in mature
males; GR 12-15 ................................................. D. at/anticus
1 h Prc)-Pr~ interspace Yz or less than Yz as long
as last AOp-Prc) interspace; SAO) directly
over or slightly behind V04; Dn well developed
in mature males; GR 11-12 .................................... D. panurgus
86.42 Diogenichthys at/anticus
(Taning, 1928)
Myctophum laternatum atlanticum Hming, 1928: 56 (20000'N, 21°55'W).
Myctophum laternatum (non Garman): Norman, 1930: 324. Diogenichthys
at/anticus: Nafpaktitis & Nafpaktitis, 1969: 13*; Hulley, 1972: 220; 1981:
55*; 1984: 74*.
D 10-12; A 15-18; P 12-14; GR 2+(10-13); AO (5-8)+(3-4). Mature
males with single, large, supracaudalluminous gland, extending 75% (or
less) of distance from procurrent C rays to base of adipose fin; mature
females with 2-4 small, coalesced luminous patches infracaudally.
86.42 Diogenichthys at/anticus: 2 em SL.