A small snake, R. iglesiasi may attain a total length (including tail) of 51.7 cm (20.4 in).[1]
Dorsally, it is reddish with a black nuchal blotch. Ventrally, it is pinkish white. The rostral is spatulate, but not upturned. The iris of the eye is black.[2]
Bailey JR (1967). "The Synthetic Approach to Colubrid Classification". Herpetologica23 (2): 155–161. (Phimophis iglesiasi, new combination).
Freiberg M (1982). Snakes of South America. Hong Kong: T.F.H. Publications. 189 pp. ISBN0-87666-912-7. (Phimophis iglesiasi, p. 107).
Gomes JF (1915). "Contribuição para o conhecimento dos ophidios do Brasil. 1. Descrição de quatro especies novas e um novo Gênero de opisthóglyphos. 2. Ophidios do Museu Rocha (Ceará)". Annaes Paulistas de Medicina e Cirurgia4 (6): 121–129. (Rhinostoma iglesiasi, new species, p. 126). (in Portuguese).