Sphagemacrurus richardi ( Weber, 1913 )

Iwamoto, Tomio, Nakayama, Naohide, Shao, Kwang-Tsao & Table, Hsuan-Ching Ho, 2015, Synopsis of the Grenadier Fishes (Gadiformes; Teleostei) of Taiwan, Proceedings of the California Academy of Sciences 62 (3), pp. 31-126 : 100-101

publication ID

https://doi.org/ 10.5281/zenodo.11512126

DOI

https://doi.org/10.5281/zenodo.11512346

persistent identifier

https://treatment.plazi.org/id/039F87BD-FF9F-1119-AB64-E425FD44FBB3

treatment provided by

Felipe

scientific name

Sphagemacrurus richardi ( Weber, 1913 )
status

 

Sphagemacrurus richardi ( Weber, 1913) View in CoL

Figures 24A–B View FIGURE .

Macrurus richardi Weber, 1913:154 View in CoL (28 syntypes: FMNH 52442 About FMNH ex cm 700 [1 spec.] Flores Sea; MOM 0091–1766 View Materials [1, disintegrated]; ZMA 110456 View Materials [1], 110447–49 [18, 1, 3], 110464 [1]; Makassar Strait; Celebes [Sulawesi] Sea ; Ceram Sea ; Flores Sea ; Siboga View in CoL sta. 85, 122, 170, 314, and 316; 538–1260 m).

Sphagemacrurus richardi : Iwamoto, 1990:288, fig. 658 (in key).— Iwamoto and Williams, 1999:212 (mentioned).— Iwamoto and Graham, 2001:493 (56 spec., se. Australia; 880–1100m).

MATERIAL EXAMINED (6 spec.).— SCS: ASIZP 65621 View Materials (1, 29.3 HL, 176 TL) , CD 203; ASIZP 66087 View Materials (1, 32.7 HL, 165+ TL) , CD 320; ASIZP 66184 View Materials (1, 35.5 HL, 186+ TL) , CD 320; ASIZP 66192 View Materials (1, 32.9 HL, 176 TL) , CD 320; ASIZP 66910 View Materials (1, 34.5 HL, 190+ TL) , CD 321; ASIZP 66944 View Materials (1, 127 TL) , CD 321.

DISTINGUISHING FEATURES.— 1D II,9–10; P i19–i21; V 10–11(12); inner GR-I 11–14 total; scale rows below 2D 8–9; pyl. caeca about 10. Snout length 35–37% HL; interorbital 30–34%; orbit 28–34%; suborbital 19–21%; postorbital 40–43%; orbit-preopercle 40–41%; upper jaw 37–39%; barbel 13–16%. Body relatively deep, about equal to HL; head about 5.3–6.0 in TL; mouth rather small, upper jaw extends posteriorly to under midorbit; barbel well developed, about half orbit diameter; underside of head mostly scaled except ventrally on snout and suborbital margin; body scales with short fine spinules arranged in about 7–9 parallel rows. Outer ray of V slightly prolonged, its tip extending to or somewhat beyond A origin. Periproct broad, abutting A origin posteriorly, spanning about 2 ⁄ 3 distance between V and A; anus closer to A than to outer base of V. Attains about 23 cm TL. (Data from Taiwan specimens only.)

DISTRIBUTION.— The ASIZ specimens captured in 634–954 m off Taiwan were the first recorded from the area ( Shao et al. 2008) and extend the range to northward from Indonesia where it was first described.

REMARKS.— Our specimens represent the first record for Taiwan. In his original description of the species, Weber (1913) gave 8 as the count of V rays, but one of the current author’s ( TI) examination of what was probably the illustrated syntype ( ZMA 110.456) had 10 rays in each fin. No other specimen of the species that we know of had such a low count, and we suspect it to be erroneous. Sphagemacrurus decimalis (Gilbert and Hubbs, 1920) has a low V count of 10, similar to S. richardi , but it differs in a number of morphometric features (as enumerated in the original description), including a somewhat lower count of rakers on the lower limb of GR-I (7 cf. 9–12); shorter snout (26–28% HL cf. 35–37%); shorter upper jaw (28–29% cf. 40–41%; shorter orbit-preopercle distance 33–34% cf. 40–41%; and shorter barbel (9–11% cf. 13–16%). Sphagemacrurus richardi differs from S. pumiliceps in having slightly fewer V rays (10–11, rarely 12, vs. 11–14), shorter barbel (13–16% vs. 16–21%), and somewhat wider interorbital (30–34% vs. 24–28%) ( S. pumiliceps data from Iwamoto and Graham 2001:493).

SCS

Agriculture and Agri-Food Canada

V

Royal British Columbia Museum - Herbarium

TI

Herbarium of the Department of Botany, University of Tokyo

ZMA

Universiteit van Amsterdam, Zoologisch Museum

Kingdom

Animalia

Phylum

Chordata

Order

Gadiformes

Family

Macrouridae

Genus

Sphagemacrurus

Loc

Sphagemacrurus richardi ( Weber, 1913 )

Iwamoto, Tomio, Nakayama, Naohide, Shao, Kwang-Tsao & Table, Hsuan-Ching Ho 2015
2015
Loc

Macrurus richardi

WEBER, M. 1913: 154
1913
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