A Review Of The Catfish Genus Pseudecheneis (Siluriformes: Sisoridae) From China, With The Description Of Four New Species From Yunnan Author Zhou, Wei Author Li, Xu Author Yang, Ying text Raffles Bulletin of Zoology 2008 2008-02-29 56 1 107 124 journal article 10.5281/zenodo.5354381 2345-7600 5354381 Pseudecheneis sulcatoides Zhou & Chu, 1992 ( Fig. 15 ) Pseudecheneis sulcatus – Chu & Chen, 1987: 375 (Xishuanbanna, Yunnan ). Fig. 14. Pseudecheneis stenura , KIZ 9811088, 93.9 mm SL; China: Longchuanjiang (a branch of Irrawaddy River) drainage. Dorsal, lateral and ventral views. Fig. 15. Pseudecheneis sulcatoides , KIZ 839059, holotype, 105 mm SL; China: Lancangjiang (the upper Mekong River) drainage. Dorsal, lateral and ventral views. THE RAFFLES BULLETIN OF ZOOLOGY 2008 Pseudecheneis sulcatoides Zhou & Chu, 1992: 111–112 , Fig. 1 (Lancangjiang system); Thomson & Page, 2006: 61 (Mekong drainage, China ). Material examined. – Lancangjiang (Mekong River) drainage: KIZ 839059 , 1 ex. , holotype , 105 mm SL , KIZ 839060 , 839063 , 748792 , 749945 , 4 ex. , paratypes , 88–100mm SL, Yangbi , Yangbi County , Yunnan Province ; KIZ 76 , 1 ex. , paratype , 83mm SL, Xiaoganlanba , Simao County , Yunnan Province ; KIZ 764006 , 1 ex. , paratype , 73mm SL, Xiaohejiang , Simao County , Yunnan Province ; KIZ 737016 , 863867–868 , 863871 , 4 ex. , paratypes , 74– 95mm SL, Menghai , Menghai County , Yunnan Province ; SWFC 9910001, 0005015–052, 38 ex. (2 DS), 49–100mm SL, Yangbi , Yangbi County , Yunnan Province . Morphometric data as in Table 3 . Diagnosis . – Pseudecheneis sulcatoides is distinguished from P. sulcata in having longer pelvic fin, reaching base of the first anal fin ray (vs. not reaching), and from P. crassicauda in having longer pectoral fin, reaching origin of pelvic fin (vs. not reaching). Pseudecheneis sulcatoides is distinguished from P. serracula in having a shorter adipose fin base (length of adipose fin base 125–166.7% in length of anal fin base vs. larger than 200%), and further from P. sympelvica in having separate pelvic fins (vs. fused). It differs from P. paviei in having 14-21 transverse ridges (laminae) of thoracic apparatus (vs. 9-13). Premaxillary tooth band semicircular and outer teeth two or four ( Fig. 2A ). Body covered with dense, tubercles distributed uniformly, some longitudinal tubercles among rounded tubercles ( Fig. 4B ). Vertebrae 17+17=34. Distribution. – This species is found in the main river and branches of low and middle Lancangjiang ( Fig. 11 ).