Poropuntius deauratus (Valenciennes, in Cuvier & Valenciennes, 1842)

Barbus deauratus Valenciennes, in Cuvier and Valenciennes 1842: 188. Type locality: Vietnam, Cochinchina [South of Hué; Kottelat 2000: 45]. Holotype: MNHN 2727.

Poropuntius normani Smith, 1931: 15. Type locality: Thailand, Chantaburi Province, Nam Tok Pliu, Kao Sabap, near Chantaburi. Holotype: USNM 90297.

Poropuntius smedleyi de Beaufort, 1933: 44. Type locality: Malaysia, Johor. Syntypes: ZRC [1, missing], ZMA 101.007 [Nijssen et al. 1993: 214).

Poropuntius bolovenensis Roberts, 1998: 124, fig. 5. Type locality: Laos, Champasak Province, Bolavens Plateau, Sekong basin, Xe Nam Noi, 300 m downstream from primary dam site of Xe Nam Noi – Xe Pian hydropower scheme . Lectotype: CAS 94251 [designated by Kottelat 2000: 46].

Poropuntius lobocheiloides Kottelat, 2000: 48. Type locality: Laos, Champasak Province, Bolavens Plateau, Xe Nam Noi 300 m downstream from primary dam site for Xe Nam Noi – Xe Pian hydropower scheme, Bolavens Plateau, Sekong watershed. Holotype: CAS 94257.

Poropuntius solitus Kottelat, 2000: 48, fig. 15. Type locality: Laos, Champasak Province, Bolavens Plateau, Huay Makchan-Gnai (Xe Nam Noy basin), south of Ban Taot at turnoff to Xe Nam Noy Project, on road from Pakse to Attapu, 15 ° 04 ' 14 " N, 106 ° 32 ' 33 " E. Holotype: ZRC 45310.

Poropuntius consternans Kottelat, 2000: 48. Type locality: Laos, Champasak Province, Bolavens Plateau, Sekong drainage, Xe Nam Noi, 300 m downstream from primary dam site of Xe Nam Noi – Xe Pian hydropower scheme, Bolavens Plateau, Sekong watershed. Holotype: CAS 94255.

Notes.

The P. deauratus clade contained 56 specimens of six nominal species, P. normani, P. deauratus, P. bolovenensis, P. lobocheiloides, P. smedleyi, and P. solitus, collected from a wide area including the Eastern Gulf of Thailand drainages, Malay Peninsula, Mekong Delta, Kratie – Stung Treng, Khorat Plateau, and Annam ecoregions, including type localities.

Molecular data from specimens originally identified as P. bolovenensis, P. lobocheiloides, and P. solitus (GenBank: Song et al. 2017) are from specimens identified morphologically by Kang et al. (2016), who also discussed variation in these forms and in P. consternans . Kang et al. (2016) considered all to be P. bolovenensis . Our results agree with the conspecificity demonstrated by Kang et al. (2016) but place P. bolovenensis in the synonymy of P. deauratus . Roberts (1998) had correctly treated P. consternans and P. lobocheiloides, later named by Kottelat (2000), as ecomorphs of P. bolovenensis . Our five specimens of P. normani were collected in the same small area as the type locality.

Poropuntius deauratus occurs over a large geographic area and shows considerable variation in shape and color (Fig. 4 B – H) as well as in the structural traits related to feeding morphology.

Distribution.

Poropuntius deauratus is found in the Western Malaysia, Malay Peninsula Eastern Slope, Eastern Gulf of Thailand, Mekong Delta, Kratie-Stung Treng, Khorat, northern Annam, and southern Annam ecoregions.