Kumba gymnorhynchus Iwamoto and Sazonov, 1994

Iwamoto, Tomio, Ho, Hsuan-Ching & Shao, Kwang-Tsao, 2009, Description of a new Coelorinchus (Macrouridae, Gadiformes, Teleostei) from Ta i w a n, with notable new records of grenadiers from the South China Sea, Zootaxa 2326, pp. 39-50 : 48

Kumba gymnorhynchus Iwamoto and Sazonov, 1994

Fig 5

Kumba gymnorhynchus Iwamoto and Sazonov, 1994:229 –231, fig. 3, 4 (holotype CAS 77313, 68.3 HL, 402+ TL) and paratype ZMMGU P.17766 (75.3 HL, 496+ TL); West Australian Ridge [Broken Ridge], 30°46’S, 93°20’E; 1260– 1370 m; 2 Sep 1976. Shao et al. 2008:25, table 2 (listed, one spec.; South China Sea, 736–1040 m)

Material examined. ASIZ P65527 (1 spec., 64.9 HL, 316 TL; South China Sea, 22°16’N, 120°06’E, 736– 1040 m; sta. CD134; 22 Nov 2001).

Counts. 1D II, 11; P i18 /i18; V 8; gillrakers first arch (outer/inner) 1+6 / 1+9, gillrakers second arch (outer/inner) 2+9 / 2+8; scale rows below 1D 11, below midbase 1D 9, below 2D 12, lateral line scales over distance equal to predorsal length ca. 52.

Measurements (in mm, percent HL in parentheses). Head length 64.9; snout 17.8 (27); preoral 13.4 (21); internasal width 14.0 (22); interorbital width 15.7 (24); orbit diameter 16.9 (26); suborbital height 10.3 (16); postorbital length 25.7 (40); distance orbit to preopercle 32.2 (50); length upper jaw 26.9 (41); length barbel 7.6 (12); length isthmus to A origin 28.7 (44); height 1D 41.3 (64); length base 1D 20.1 (31); P length 34.7 (53); length V 54.1 (83).

Remarks. This specimen represents the first record of the species from the western Pacific and only the third known specimen. The original description was based on two specimens collected from the West Australian Ridge in the eastern Indian Ocean. Another specimen was examined by the first author in the Museum of Victoria (NMV 23944, 61 mm HL, 360 mm TL); it was captured off Albany, Western Australia (35°S, 118°E). The species is also expected to be in the southwestern Pacific.

Figures

FIGURE 5. Kumba gymnorhynchus, ASIZP 65527, 64.3 mm HL, South China Sea, lateral view, preserved specimen.