Pelidnota punctata

Pelidnota punctata, the grapevine beetle, spotted June beetle or spotted pelidnota, is a species of beetle in the family Scarabaeidae (Scarab beetles), subfamily Rutelinae. Grapevine beetles are common in the north and central United States and eastern Canada, but do relatively little damage to their host plants. The beetles fly at a fast speed, usually in a curving flight. The adult beetle is approximately 2.5 centimetres (1 inch) long, but can reach 3 cm (1.2 in) occasionally. Its pattern is off-yellow or auburn red, with four black spots running down each side. Fine black lines divide the edges of its elytra. There are regional variants of Pelidnota punctata: a common southern form lacks the darker legs, while the northern form has darker legs. Adults in the northern parts of its range will have darker and more spots, while those in the southern regions may not have them at all. The grapevine beetle is a variable species, whose taxonomy was confused by a single authority (Thomas Casey) who split the species into 11 different taxa in 1915, only to have these names relegated to synonymy by subsequent workers.

from Wikipedia