Pristimantis inguinalis Pristimantis inguinalis Pristimantis inguinalis is a species of frog in the family Craugastoridae. It is found in Guyana, Suriname, French Guiana, and northern Brazil (Amapá state). The type locality is "the New River, British Guiana", in the disputed area claimed by both Guyana and Suriname. Common names New River robber frog and New River South American rain frog have been coined for it. Adult males measure on average in snout–vent length. Specimens from French Guiana have light brown dorsal surface with large brownish black markings. The marking behind the head is W-shaped, and another is a chevron. Supralabial bars are
British Guiana 1899 arbitration award settling the British Guiana—Venezuela border made reference to the border with Suriname as continuing to the source of the Courantyne River, which it named as the Kutari River. The Netherlands raised a diplomatic protest, claiming that the New River, and not the Kutari, was to be regarded as the source of the Courantyne and the boundary. The British government in 1900 replied that the issue was already settled by the longstanding acceptance of the Kutari as the boundary. In 1962, the Kingdom of the Netherlands, on behalf of Suriname, which had become a constituent country of the