TOXICITY OF ALKALOID FRACTIONS FROM Psychotria spp. (RUBIACEAE) AGAINST Atta sexdens FOREL, 1908 (HYMENOPTERA: FORMICIDAE) - Alves, Dejane Santos; Garcia Fernandez, Pilar Canela; Martin, Alejandro Martin; Budia, Flor; Carvalho, Geraldo Andrade; Zanetti, Ronald; de Oliveira, Denilson Ferreira; (Cerne, 2019)