Subject: Grapevine Beetle
Location: Ottawa, Ontario, Canada
July 25, 2016 2:44 pm
Unusual find for our location, and we have no grapevines nearby. Beautiful beetle.
You are correct that this is a Grapevine Beetle, and according to BugGuide: “Adults feed on grape (Vitis) foliage and fruit, both wild and cultivated species. Not a serious pest. Larvae host on dead Acer, Celtis, Juglans, Malus, Platanus, Quercus, Ulmus spp.” Though we don’t want to take the time to research all genera of larval hosts, they include maple, walnut, oak and elm and we are relatively certain some of those trees are found nearby. Also, the adult plant host list might be incomplete. Folks who want to start butterfly gardens quickly learn that if they do not have caterpillar host plants to produce the butterflies, they will not have many visitors to the flowers they plant.