Garra rotundinasus Zhang, 2006

Sun, Chao, Li, Xu, Zhou, Wei & Li, Fenglian, 2018, A review of Garra (Teleostei: Cypriniformes) from two rivers in West Yunnan, China with description of a new species, Zootaxa 4378 (1), pp. 49-70 : 59-60

Garra rotundinasus Zhang

( Figs. 3C and 8 )

Garra gravelyi: Chu & Cui 1987: 94 –96 (Daying-jiang drainage); Zhang et al. 2000: 243 (Jiucheng, Yingjiang County, Yunnan, China) [ Daying-jiang drainage].

Garra rotundinasus Zhang 2006: 447 –453 (Houqiao in Tengchong City, Yunnan, China) [Daying-jiang drainage]; Chen 2013: 311 (Daying-jiang drainage).

Material examined. SWFC 9904069–9904079, 11 ex., 83.0– 142.7 mm SL, Yunnan: Yingjiang: Mangyun, Daying-jiang, an upper tributary of the Irrawaddy River; SWFC 0103211–0103220, 10 ex., 47.8–63.0 mm SL, Yunnan: Yingjiang: Nabang, Mulei-jiang, an upper tributary of the Irrawaddy River; SWFC 0411299–0411305, 0411307–0411310, 11 ex., 117.1–140.3 mm SL, Yunnan: Tengchong City: Houqiao, Daying-jiang, an upper tributary of the Irrawaddy River; SWFC 0 603006, 0 603007, 2 ex., 98.0– 126.5 mm SL, Yunnan: Yingjiang: Sudian: Mengga-he (an upper tributary of Nantaibai-jiang in Myanmar), an upper tributary of the Irrawaddy River; SWFC 1301021, 135.9 mm SL, Yunnan: Yingjiang: Tongbiguan, Daying-jiang, an upper tributary of the Irrawaddy River; SWFC 1502001–1502010, 10 ex., 84.0– 135.6 mm SL, Yunnan: Tengchong City: Houqiao, Daying-jiang, an upper tributary of the Irrawaddy River; SWFC 1608001–1608044, 44 ex., 80.5–109.7 mm SL, Yunnan: Tengchong City: Houqiao, Daying-jiang, an upper tributary of the Irrawaddy River.

Diagnosis. Meristic and morphometric data are shown in Tables 3 and 4. Garra rotundinasus can be easily distinguished from its congeners without a proboscis in the Irrawaddy River and Salween River basins by its transverse lobe and proboscis. It can be further distinguished from congeners with a transverse lobe and proboscis in the Irrawaddy River and Salween River basins by the combination of the following characters: poorly developed unilobed proboscis (vs. bi-lobed proboscis in G. bispinosa ; tri-lobed proboscis in G. fuliginosa , G. salweenica , and G. surgifrons ; well-developed unilobed proboscis in G. qiaojiensis ); 12 circumpeduncular scales (vs. 16 in G. bispinosa , G. fuliginosa , G. gotyla , G. salweenica , and G. surgifrons ); no marks or stripes on the dorsal fin (vs. dorsal fin base with some black spots in G. gravelyi , G. gotyla , G. litanensis , and G. qiaojiensis ; dorsal fin with a black band in G. elongata and G. tengchongensis ); 35–37 lateral scales (vs. 32–34 in G. gravelyi ; 39–40 in G. elongata ; 33–35 in G. gotyla ; 32–33 in G. litanensis ; 34–35 in G. qiaojiensis ); 9 predorsal scales (vs. 13 in G. elongata ; 10–12 in G. gotyla ); larger mental adhesive disc, its width almost equal to the width of the corresponding head, posterior margin extending beyond the vertical of the posterior margin of the eye (vs. a smaller disc, its width shorter than the width of the corresponding head, posterior margin not extending to, or slightly beyond the vertical of the posterior margin of the eye in G. gotyla and G. litanensis ).

Distribution. Garra rotundinasus is only known from a limited distribution in Daying-jiang (an upper tributary of the Irrawaddy River), west Yunnan, China.

Figures

FIGURE 3. Morphological comparisons of the snout among six species of Garra.

FIGURE 8. Garra rotuNdiNasus. SWFC 1301021, 128.3 mm SL; Yunnan: Yingjiang: Tongbiguan: Daying-jiang, an upper tributary of the Irrawaddy River; dorsal, lateral, and ventral views.