Pseudecheneis paviei Vaillant, 1892

Zhou, Wei, Li, Xu & Yang, Ying, 2008, A Review Of The Catfish Genus Pseudecheneis (Siluriformes: Sisoridae) From China, With The Description Of Four New Species From Yunnan, Raffles Bulletin of Zoology 56 (1), pp. 107-124 : 117-119

Pseudecheneis paviei Vaillant, 1892

( Fig. 12)

Pseudecheneis paviei – Vaillant, 1892: 126 (Lai Chou, Vietnam), 1940: 464; Chu, Mo & Kuang, 1990: 199–200, Fig. 199

THE RAFFLES BULLETIN OF ZOOLOGY 2008

(Pinbian, Luchun); Kottelat, 1998: 108, fig. 168 ( Laos); Kottelat, 2001: 55; Thomson & Page, 2006: 60 (Red River drainage).

Parapseudecheneis paviei – Hora & Chabanaud, 1930: 215; Mai, 1978: 268–269 ( Vietnam).

Pseudecheneis intermedius – Chu, 1982: 430–431, Fig.2 (Jingdong); Chu & Mo 1999: 156–157, Fig. 100 (Jingdong).

Material examined. – Yuanjiang (main of Red River) drainage: SWFC 97121278–1285, 9801013, 9812001–010, 9903001, 20 ex. (3DS), 69–132 mm SL, Nanxihe , Pinbian County, Yunnan Province ; SWFC 9902101, 0005151–154, 0010001–020, 25 ex. (2DS), 42–94 mm, Tengtiaojiang , Jinping County, Yunnan Province ; SWFC 0005080–084, 5 ex. (2DS), 59–69mm SL, Sanjiangkou , Xinping County, Yunnan Province ; KIZ 914106–107 , 2 ex., 60.5–73 mm SL, Xiaoluzhi , Yimen County, Yunnan Province . Lixianjiang (a tributary of Red River ) drainage : KIZ 737173 , 1 ex., holotype of Pseudecheneis intermedius , 56.5mm SL , KIZ 737172 , 737179 , 737183–184 , 737188–189 , 6 ex., paratypes, 49–56.5mm SL, Chuanhe , Jingdong County, Yunnan Province ; SWFC 9810001– 014, 14 ex. (2DS), 36–83.5 mm SL, Chuanhe , Jingdong County, Yunnan Province . SWFC 0412014–030, 15 ex., 37.4–91 mm SL, Niuluohe , Jiangcheng County, Yunnan Province . SWFC 0412031– 044, 14 ex., 44.9–95.5 mm SL, Baozang , Jiangcheng County, Yunnan Province .

Morphometric data as in Table 3.

Diagnosis. – Pseudecheneis paviei is distinguished from other congeners by the combination of following characters. Thoracic adhesive apparatus with 9–14 transverse ridges (laminae) (vs. 14–20). Snout wide and flat, the ratio of snout width at mouth corner to distance between pectoral fin base larger than 0.75 (vs. smaller than 0.75). Caudal peduncle deeper (depth of caudal peduncle 6.1–9.3% SL and 29.4– 46.7% in length of caudal peduncle vs. 3.3–5.7, 11.5–24.5). Caudal fin with four yellow spots, isolated each other, not connected (vs. connected each other and forming an entire patch, or only one sport at lower lobe isolated) ( Fig. 13). Premaxillary tooth band semicircular and six or eight teeth along its outer edge (vs. two or four) ( Fig. 2C). Body covered with dense, rounded tubercles distributed irregularly, not uniformly ( Fig. 4A). Tubercles increasing in density gradually from occipital to caudal peduncle. Vertebrae 17+16=33 (1), 17+17=34 (4).

Distribution. – This species is found only in the Honghe (Red

River) drainage ( Fig. 11).

Remarks. – Chu (1982) asked Dr. Greenwood working in the Natural History Museum (London) to examine types of Pseudecheneis paviei deposited in Muséum National d’Histoire Naturelle (Paris). Dr. Greenwood could not find types of P. paviei . In this study, examined specimens are included some specimens collected from Tengtiaojing of Jinping County in Yunnan, China where is near to the type locality of P. paviei in Laichou of Vietnam. Meanwhile, all types of P. intermedius deposited in KIZ had been examined.