Agrilus egenus Gory, 1841 .

This finding must represent another introduction: Ada Co., Boise, 3000′, 20-VII-2016, Japanese beetle pheromone trap, urban habitat [CIDA]. This native species is widespread in the USA, having been recorded from most places where its hosts, Robinia spp. L. are native. Likely it will be found in other western states where its naturalized host black locust, Robinia pseudoacacia L. ( Fabaceae), occurs.