Through this work we want to do a comparative study between the distribution of Halyomorpha halys species in Romania and Algeria. We are also considering the exposure of the host plants through updating. The aim is to see if there are differences or similarities in frequency and feeding behavior in the two mentioned countries, considering that they are part of 2 different climatic zones. The species originating from China, arrived in Romania in 2015 and in Algeria much later, in 2021. Our searches showed that it is widespread all over Europe and only in 2 countries in North Africa. Which entitles us to note the ability to move or spread through the plant trade, most likely through Spain, which is very close to Algeria. It is clear that in Romania, the Brown marmorated stink bug (BMSB) species is much more advanced in terms of population size, but especially the range of host plants. So, 33 preferred plant species were identified in Romania but for Algeria the situation is still uncertain, which is explainable due to the recent entry. However, it is expected that the evolution in Algeria will be much faster as it is known that there are species that prefer heat and sunny days. Comparing the different climatic zones of the 2 countries, it can be concluded that BMCB is very adaptable to new conditions, from temperate continental ones to warm Mediterranean ones. And these will be new subjects of study for the scientific world, if it stops expanding considering the very high temperatures in the central and southern part of Algeria.

BMCB, pest, spreading, host plant, climatic conditions

biology

Presentation: poster