E. E. EBRATTI, C. ESPINEL-CORREAL, and A. M. COTES, “Observations on the biological and ecological behaviour of Rhammatocerus schistocercoides (Orthoptera:Acrididae)/in Colombian high plateaux”, Rev. Colomb. Entomol., vol. 24, no. 2, pp. 75–81, Dec. 1998.