Melo, Luiz Antônio Silveira, and Sinval Silveira Neto. 2014. “Sampling Types and Population Evolution of the Spittlebug”. Pesquisa Agropecuaria Brasileira 18 (12): 1303-9. https://doi.org/10.1590/S1678-3921.pab1983.v18.15488.