Published as part of Nogueira, Cristiano C., Argôlo, Antonio J. S., Arzamendia, Vanesa, Azevedo, Josué A., Barbo, Fausto E., Bérnils, Renato S., Bolochio, Bruna E., Borges-Martins, Marcio, Brasil-Godinho, Marcela, Braz, Henrique, Buononato, Marcus A., Cisneros-Heredia, Diego F., Colli, Guarino R., Costa, Henrique C., Franco, Francisco L., Giraudo, Alejandro, Gonzalez, Rodrigo C., Guedes, Thaís, Hoogmoed, Marinus S., Marques, Otavio A. V., Montingelli, Giovanna G., Passos, Paulo, Prudente, Ana L. C., Rivas, Gilson A., Sanchez, Paola M., Serrano, Filipe C., Silva Jr., Nelson J., Strüssmann, Christine, Vieira-Alencar, João Paulo S., Zaher, Hussam, Sawaya, Ricardo J. & Martins, Marcio, 2019, Atlas of Brazilian Snakes: Verified Point-Locality Maps to Mitigate the Wallacean Shortfall in a Megadiverse Snake Fauna, pp. 1-274 in South American Journal of Herpetology 14 (s 1) on page 34, DOI: 10.2994/SAJH-D-19-00120.1, http://zenodo.org/record/10061686

Helicops modestus Günther, 1861 Type locality. America. Distribution. Endemic to Brazil (Plt. 284A), recorded in the central portion of the Atlantic Forest and the southern portion of the Cerrado (Plt. 284A), at intermediate to high elevations (Plt. 284B). Observed in the field in lentic waters of flooded areas (Costa et al., 2016).