@article{knutson_carvalho_1989,  title={Seasonal distribution of a relatively rare and a relatively common species of Thecomyia at Belém, Pará, Brazil (Diptera: Sciomyzidae)},  volume={84},  ISSN={0074-0276},  url={https://doi.org/10.1590/S0074-02761989000800050},  DOI={10.1590/S0074-02761989000800050},  journal={Memórias do Instituto Oswaldo Cruz},  publisher={Instituto Oswaldo Cruz, Ministério da Saúde},  author={Knutson, Lloyd and Carvalho, Claudio José Barros de},  year={1989},  pages={287–289} }