After 60 years of only small sporadic outbreaks of the South American locust, in 2015–17, a large upsurge led to damaging outbreaks in Argentina and Bolivia, requiring declarations of national emergencies in these countries (Medina et al. 2017). These outbreaks have continued into 2018–19, with numerous outbreaks in the Gran Chaco region of Paraguay which have now spread south in Argentina as far south as Santiago del Estero.
In response to these outbreaks, on April 8, 2019, a conference was held at SENAVE (Servicio National de Calidad y Sanidad Vegetal y Semillas) headquarters in Asuncion to discuss whether Paraguay should declare a national emergency. The conference included presentations by Hector Medina (Servicio Nacional de Sanidad y Calidad Agroalimentaria, SENASA-Argentina), Fernando Copa Bazan (Universidad Autonoma Gaston René Moreno, Santa Cruz, Bolivia), Jon Harrison (School of Life Sciences, Arizona State University), and Julio Rojas (SENAVE-Paraguay), and was attended by numerous SENAVE administrators including the Director of Dirección de Protección Vegetal, Ing. Agri. M.Sc. Ernesto Galliani.