Claea dabryi ( Sauvage, 1874 )

Zhang, Chu-Yi, Luo, Pan, Huang, Feng & Zhang, E., 2024, Revision of the loach genus Claea Kottelat, 2010 (Teleostei: Nemacheilidae) in China, with a description of a new species from the Chang-Jiang basin, Zootaxa 5543 (3), pp. 404-422 : 416-417

Claea dabryi ( Sauvage, 1874)

( Figure 5 )

Oreias dabryi Sauvage, 1874: 334 (type locality: China: Sichuan: Qingyi-Jiang at Dengchigou, Baoxing County); Zhu & Wang, 1985: 209 ( China: Yunnan: Jinsha-Jiang in Yulong County); Ding, 1994: 60 ( China: Sichuan: Jinsha-Jiang, in Muli County; Qingyi-Jiang in Baoxing and Hongya counties; Min-Jiang in Wenchuan County; and Dadu-He in Emenshan and Kangding cities). Wu & Wu 1992: 147 ( China: Sichuan: Jinsha-Jiang in Batang County, and Min-Jiang in Li County; Yunnan: Jinsha-Jiang in Yulong and Huaping counties). Chen, 1998: 57 ( China: Sichuan: Jinsha-Jiang in Huili City, Yalong-Jiang in Ganzi County; Yunnan: Jinsha-Jiang in Ninglang County).

Oreias crassipedunculatus Bănărescu & Nalbant, 1976: 189 (type locality: China: Yunnan: Jinsha-Jiang in Zhaotong City )

Oreias furcatus Bănărescu & Nalbant, 1976: 188 (type locality: China: Sichuan: Min-Jiang in Dujiangyan County).

Schistura dabryi : Zhang et al., 2019: 371 ( China: Sichuan: Jinsha-Jiang).

Claea dabryi : Kottelat, 2012: 81; Guo et al., 2021: 505 ( China: Sichuan: Yalong-Jiang in Yajiang and Yanyuan counties; Jialing-Jiang in Beichuan County; Qingyi-Jiang in Baoxing, and Dadu-He at Xiaojin, Shimian and Leshan).

Specimens examined. MNHN 6276 , holotype (photograph examined), about 122 mm SL; China: Sichuan Province: Dengchigou , Baoxing County . USNM 130128 , holotype (photograph examined) of O. furcatus , about 125 mm SL; China: Sichuan Province: Tsao Po . USNM 94731 , holotype (photograph examined) of O. crassipedunculatus , about 80 mm SL; China: Yunnan Province: Chatung . IHB uncatalogued, one topotypic specimen, 40.1 mm SL; China: Sichuan Province: Emeishan City, in Qingyi-Jiang . IHB 0630 , one specimen, 58.0 mm SL; China: Sichuan Province, in Jinsha-Jiang . IHB 3512 , 3514 , 3525 , three specimens, 48.0– 77.7 mm SL; China: Sichuan Province: Ebian County, in Dadu-He . IHB S1–0032 – 0037 , six specimens, 37.6–54.7 mm SL; China: Sichuan Province: Jinchuan County, in Dadu-He . IHB 0352 , 590341,590359 – 62 , 590364–65 , 590367–68 , 10 specimens, 51.1–82.6 mm SL; China: Sichuan Province: Li County, in upper Min-Jiang . IHB 585030 , 585039–42 , 585044–46 , 580043 , 590357 , 10 specimens, 48.8–88.5 mm SL; China: Sichuan Province: Wenchuan County, in upper Min-Jiang .

Diagnosis. Claea dabryi is distinguished from two congeneric species by having longer outer rostral barbels extending beyond (vs. away from) the anterior margin of eye and longer maxillary barbels extending beyond (vs. away from) the posterior margin of eye. It is further distinct from C. minibarba in possessing a shallower body (depth 9.6–15.0%, mean 12.5, of SL vs. 14.7–17.6, mean 15.9; Figure 3b ), a shallower caudal peduncle (depth 5.5–10.3, mean 8.3, % of SL vs. 9.5–11.7, mean 10.6; Figure 3e ), and from C. wulongensis in having a narrower interorbital space (width 20.0–33.8% of HL vs. 38.5–43.1; Figure 3a ).

Distribution. So far known from the Jinsha-Jiang, Jialing-Jiang, and Min-Jiang of the upper Chang-Jiang basin ( Figure 10 ). Claea dabryi was ever recorded from the Wu-Jiang ( Zhu 1989; Tang et al. 2001; Yang et al. 2022), and the Qing-Jiang ( Yang 1987; Tang et al. 2001). Specimens from the two rivers don’t conform to this species, but to C. minibarba .

Figures

FIGURE 3. Relationship between interorbital width and head length (a); body depth and standard length(b); outer rostral-barbel length and head length (c); maxillary-barbel length and head length (d); caudal-peduncle depth and standard length (e) for Claea dabryi (blue square), C. minibarba sp. nov. (red circle), and C. wulongensis (green triangle).

FIGURE 5. Lateral view of body in Claea dabryi: IHB 3514, 77.7 mm SL, South China: Sichuan Province: Ebian County: Dadu-He.

FIGURE 10. The main distribution basin of Claea dabryi (triangle), C. wulongensis (pentagon) and the distribution of sampling localities for C. minibarba sp. nov. (circle).