Occurrence and distribution of brown marmorated stink bug (BMSB) (Halyomorpha halys (Stål, 1855) [Hemiptera, Pentatomidae]); new invasive alien stink bug in Slovenia.
Brown marmorated stink bug (BMSB) (Halyomorpha halys (Stål, 1855) [Hemiptera, Pentatomidae]) is an invasive, alien and polyphagous species, native to East Asia. In the mid-1990s was introduced into the USA and in 2004 in Europe. BMSB has shown high adaptability to the new environments and ability to reproduce successfully, producing at least one complete generation per year. By traffic and own capacity for long distance flight can rapidly spread to new areas. Occurrence and spreading of new species in both USA and Europe resulted in severe yield losses in fruit, vegetable and cereal production. Due to its overwintering habits accompanied by invasions of adults to human-made structures, it is considered a nuisance pest in urban areas. BMSB has been present also in Slovenia, first time was recorded in Šempeter pri Gorici in spring 2017. In the same year was found in some other locations around Nova Gorica. Ongoing spread of BMSB in Slovenia was confirmed by methodical monitoring carried out in 2018. The pest already invaded Primorska region, from Soča Valley to Slovenian Istria and spread to Central and Southeast Slovenia. Recent findings in urban area in Kranj, Lesce, Celje, Želimlje and Maribor confirm that the species will soon spread throughout the country. High populations of H. hays were observed in Primorska region in autumn 2018 and also an economic important damage was registered in apple and pear production for the first time.