Alien true bug species Halyomorpha halys (Stål, 1855) – new pest in plant production.
The species Halyomorpha halys (Stål, 1855) is an alien true bug of a Pentatomidae family originating from Eastern Asia. It was observed in North America in the mid-1990s and in 2010, multi-million-dollar damage was recorded in agricultural production. In Europe, it was recorded for the first time in Switzerland in 2004. Favourable climatic conditions enabled the rapid expansion of the species to a dozen of European countries including Croatia in 2017. The species is a polyphagous pest that feeds on fruit, vegetable and row crop cultures and ornamental plants, so its expansion in our country would represent a potential danger to agricultural production. The paper deals with morphology, biology and ecology, host plants, damages, monitoring and pest control methods of this pest.