A new species for the bee fauna of italy: Megachile sculpturalis continues its colonization of Europe

During studies of bee diversity and nesting biology in the province of Verbania, Piedmont, northern Italy, a bee species recognized as foreign to the Italian fauna was observed. Observations were conducted on their life cycle and nesting behaviour, and specimens were collected for subsequent identification. The species in question was determined to be Megachile (Callomegachile) sculpturalis Smith (Hymenoptera Megachilidae), a species native to East Asia. The population has been present in the area since 2009 and the number of nests detected is expanding. The flight activity is from approximately 10 July to 15 August. We examine hypotheses that may explain the arrival of the insect. In addition, pollen samples were taken from the nests, preliminary results of pollen analysis are provided, and the potential impact of this invasive species on the local fauna and flora is examined.