As I mentioned in Eccles' lovely photo presentation, butterflies at Clarke's Gap have been scarce this spring, likely as a result of the harshest winter in 110 years.
So this doughty fellow was particularly welcome. He is an Eastern Tiger Swallowtail, a lovely jewel- like creature. He and another spirited male were dueling for territory rights around a wild Virginia rose creeper.
I guess he won the dispute, because the other gent flew off, leaving this one resting on his roses, boldly victorious albeit a bit breathless.
Papilio glaucus glaucus...
And I'd just like to reply to eccles' previous comment on stink bugs:
Yes, they are shield bugs, quite correct. And these of which I complain are a recent invader species from Asia by way of Criminally Careless Pennsylvania. They rival the greatest plagues of Biblical Egypt.
They come into the house by the hundreds. They get into clothing and bedding, even if said fabrics are occupied by human bodies. They buzz around lights and settle on people's hair and skin. They drop right into your food or drink. They fall on their backs and are too awkward to flip over so they lie there kicking and stinking for hours. They fill up Hoover bags and clog the vaccuum hose.
In the orchard, they destroy developing fruit by sucking out the juice.
The US Department of Agriculture says these invader bugs are not susceptible to insecticide spray, and there are no natural predators here. But the USDA isn't worried, because they've got their pensions, haven't they?
Love the Swallowtail 
Think I'll give the stink/shield bug a miss though. That sounds awful!.
As for "not susceptible to insecticide spray" surely that means it's time to develop a new one and not just to shrug it off. There are bound to be lots of ways to kill them. The trick of course being to find one that doesn't kill everything else in the process.
I think I'd be ordering a flamethrower 
Actually I'd be checking what their natural predator was and if it was something safe to introduce - very carefully.
Wow, those bugs sound worse than the awful harlequin ladybird.
Still that superb butterfly must help make up for them. Swallowtails only exist in the UK in a few small areas in Norfolk and Suffolk. It's a unique British subspecies of the European swallowtail, and I have yet to see one in the flesh.