We present a case of cutaneous myiasis occurring in a hospital environment (nosocomial myiasis) in an patient with serious multiple traumas sustained in a motorcycle accident. The agent responsible for the myiasis was identified as Sarcophaga cruentata (Meigen 1826). The larvae found in the necrotic wound were removed and the necessary environmental measures were taken to avoid further infestation. Although nonocomial myiasis is a form of parasitosis already cited in the in literature, it is a rare event and worthy of attention to aid in identifying parasitosis in hospitalized subjects in order to expedite proper diagnosis and treatment.