Resumo. The use of baited traps is essential for sampling necrophagous Diptera Linnaeus, 1758 in both ecological and forensic studies. Ferreira's trap is a widely used model in Brazil; however, traditional versions can present logistical challenges under field conditions. This study proposes a simple, cost-effective modification to the original design, using standard plastic honey jars as the new apparatus. The modified trap is characterized by its portability, ease of assembly, and the ability to allow rapid specimen retrieval. The effectiveness of the modified trap was successfully demonstrated during field collections. The system is designed for use by a single researcher and has proven to enable efficient specimen capture comparable to that achieved with classical traps. This design is especially recommended for sampling blowflies and other Diptera attracted to decomposing organic matter.