Fráguas, J.C., Soria, S.J., & Hochmüller, D.P. 2000 Observações de campo sobre as interrelações entre níveis populacionais da pérola-da-terra, Eurhizococcus brasiliensis (Homoptera, Margarodidae) e alguns fatores de fertilidade do solo.. Entomología y Vectores 7(4): 339-354.

Notes: Title in English: [Field observations on the inter-relationships between population levels of the Brazilian ground pearl Eurhizococcus brasiliensis (Homoptera, Margarodidae) and some soil fertility factors.] This species is a very aggressive scale insect pest parasitizing the root system of vineyards and inducing premature dieback of fruit plants in the south of Brazil. This paper reports on information regarding the degree of influence of some soil fertility factors in the face of the magnitude of the population levels of this species in naturally infested vineyards.