Ponce A., Marcos, Solis, Frank A., Ibáñez, Roberto D., and Jaramillo, Cesar A. 2008. "Geographic distribution. Hydromorphus concolor." Herpetological Review, 39, (3) 371.
HYDROMORPHUS CONCOLOR (Serpiente Acuatica). PANAMA: PANAMA: Distrito de Chiman: Pacific slope of SeITanfa de Maje (8.8664°N, 78.5871oW; WGS84), 505 m elev. 17 March 2004. Marcos Ponce A. Verified by Mahmood Sasa. Museo de Vertebrados de la Universidad de Panama (MVUP 1889). New district record, extending the geographic range ca. 98 km (airline) SE of the nearest locality in central Panama (Ibafiez et at. "1994"[1995]. Scientia (Panama) 9:17-31).
