June bugs

[Cappy]

I aint ever seen this before, but a couple nights agol while walking our new dog, I noticed that one of the little(2 1/2") tall pecan trees I planted this spring was crawling with june bugs. I didn't think much about it but the next day I noticed some of the leaves were eaten. That evening after dark when I walked by I could see the june bugs actively nibbling leaves off of the young tree. This morning the leaves were half gone from the tree and I got scared. Dusted it good with Seven and have my fingers crossed. I was wondering if you guys ever saw this or know if the seven will work. I plan to check after dark and see what I see, but was wondering what yall thought??