“…Beauveria bassiana and Metarhizium anisopliae are the most commonly assessed fungi in alternative control of Rhipicephalus microplus, Ixodes scapularis, Dermacentor variabilis and Amblyomma variegatum ticks (Ub and Narladkar, 2018). However, several entomopathogenic fungi as Trichoderma harzianaum, T. virens and Paecelomyces fumosoroseus, have been reported as acaricidal and nematicidal against Cimex hemipterus, Acanthoscelides obtectus, Meloidogyne javanica, Toxocara canis, Geotrogus deserticola and Tetranychus kanzawai (Kiriga et al, 2018, Rodríguez-González et al, 2018, de Souza et al, 2017, Zahran et al, 2017, Harizia and Lazreg, 2016, Sanjaya, 2016. For this reason, due to the potential acaricidal activity of several species of entomopathogenic fungi, the aim of this study was to evaluate the in vitro effectiveness of combined commercial strains against Amblyomma mixtum and R. microplus ticks.…”