No, I think it's where a caterpillar has been feeding. Definitely not PC. I occasionally see something like in your photo on apples here. It is nothing to worry about unless you see a lot of it. Sevin would cure the caterpillar issue.

Thanks, I did look at all of those on Baldo's site but they look a lot larger. I have similar large rose caterpillars on my roses and I also have rose slugs. These are a fraction of the size I'm found as those previously and they eat holes through the petals instead of eating the petals and the centers. These are my main pests. I still have about a 100 or so toads eating everything else up and I don't want to spray if I don't have to. I've been watching for the damage and plucking the slugs and caterpillars off when I find them and either feeding them to the toads or killing them. I keep saving them when I find one of them, but they keep dying in the dish I put them in. It took me a couple dozen pics on different focus to get this pic or I'd try to put something in to measure this by and this creature doesn't hold still to try to take it's picture. I had just pulled a slug off another rose and squished it when I found this tiny one on Gemini, I wished I'd saved them both now. I also found the first Preying Mantis of the summer yesterday, think they eat rose slugs and these? Thanks for the opinions and the help.

Can't tell you much about preventatives or cures, but what you have there appears to be Epilachna varivestis Mulsant, or Mexican Bean Beetle.

hi Kim, i couldn't really tell from your photo of the little grubbys, if they look like this up close these turn into these, which are Syrphid flys...AND THEY ARE GOOD GUYS..... so hopefully they are Syrphid fly larva....they are the kind that hoover around and make a whining noise. i m ust say i used to swat at them, but since a few weeks ago when smokemaster helped me identify my grub....no swatting at them anymore, they chow aphids......good luck with it kim and i hope this helps tx bob