they were first recorded in Europe in 2004 and since then have become widespread in many countries including France.

They are polyphagous and are a major pest of apple, pear, kiwi, peach, apricot, cherry, hazelnut, soya and corn crops They are also a pest of peppers grown in glasshouses and polytunnels and can be a nuisance when thousands of adults enter residential and commercial buildings in the autumn to overwinter, leaving a characteristic unpleasant odour. Most other bugs that enter houses for winter do so in smaller numbers.

there are five to six generations per year that have been reported with a relatively high minimum requirement for development of over 14°C. 

In France they are more likely to only have one or two generations a year depending on region.

 that measures between 12 and 17 millimetres long and 7 to 10 millimetres wide. They are recognisable by their brown-grey back, light patterns on the edges of its elytra (hard and horny wings specific to beetles) and the two white marks on its antennae but a little care is required to avoid confusion with other species. The chart from inrae.fr  with the links comparing them to other native species is helpful.