We found the specimen on September 6, 2024, during a fieldwork carried out between 2–10 of September 2024 at the ESEC-RC. This is a 99,772 ha, fully protected conservation unit, in the São Francisco River valley (Garda et al., 2013). We found the adult male Siphlophis leucocephalus while it was moving along a branch close to the ground, collected it manually and transported it to the improvised laboratory at ICMBIO (Instituto Chico Mendes de Conservação da Biodiversidade) headquarters.