Silva, Deise Maria Passos da. “Occurrence of Colloeneis on Diaspis Echinocacti in Alagoas, Brazil”. Pesquisa Agropecuaria Brasileira, vol. 25, no. 2, Apr. 2014, pp. 281-2, doi:10.1590/S1678-3921.pab1990.v25.13397.