Synophis lasallei, also known commonly as Lasalle's fishing snake, La Salle's shadow snake, and la culebra andinas de la sombra de La Salle in South American Spanish, is a species of snake in the subfamilyDipsadinae of the familyColubridae. The species is native to northwestern South America.
Nicéforo-María H (1950). "Contribución al conocimiento de los Ofidios de Colombia". Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales, Bogotá7: 517–518. (Diaphorolepis lasallei, new species, with photograph and two line drawings of head scalation). (in Spanish).
Peters JA (1960). "The Snakes of Ecuador: A Check List and Key". Bulletin of the Museum of Comparative Zoology122 (9): 489–541. (Synophis lasallei, new combination, p. 538).
Peters JA, Orejas-Miranda B, Donoso-Barros R (1970). "Catalogue of the Neotropical Squamata: Part I. Snakes". United States National Museum Bulletin (297): viii + 1–347. (Synophis lasallei, p. 288).
Sanchez, Tatiana Toro; Montañez, Alejandro; Bernal, Manuel Hernando (2019). "New records of Synophis lasallei (Nicéforo-María, 1950) and Synophis niceforomariaePyron, Arteaga, Echevarría & Torres-Carvajal, 2016 (Serpentes, Colubridae) from the Cordillera Central in Colombia". Check List15: (6): 1051–1054.