Gomes, J.G. 1940 Chave de campo para determinaçao das principaes pragas dos citrus. [Field keys to determine the main pests of citrus.]. Revista da Sociedade Brasileira de Agronomia 3: 1-94 (+ plates i-vii).

Notes: Key to pest species of citrus, including Aonidiella aurantii, Aspidiotus cydoniae, Ceroplastes floridensis, Chionaspis aspidistrae, Chrysomphalus dictyospermi, C. aonidum, C. scutiformis, Coccus hesperidum, C. viridis, Diaspidiotus lataniae, Icerya brasiliensis, I. purchasi, Lepidosaphes citricola, L. pinnaeformis, Morganella longispina, M. maskelli, Mytilococcus beckii (=Lepidosaphes citricola), Orthezia insignis, Parlatoria oleae, P. pergandii, Pericerya purchasi, Pinnaspis aspidistrae, Pseudaonidia trilobitiformis, Pseudococcus citri, P. comstocki, P. cryptus, P. longispinus, P. adonidum, Pulvinaria flavescens and Saissetia oleae.