Where are my butterflies?

It has been such a cool rainy summer that I have only seen a couple of battered Tiger Swallowtails and two monarchs (one female) in the last month or so. Our county sprayed for mosquitos last year and I am wondering if this has anything to do with the poor showing of butterflies. My neighbor has 10 or 20 butterfly bushes and barely a butterfly comes by. Of course we have lots of cabbage white butterflies and they have been eating my kale. Yesterday I saw a bright yellow butterfly but it flew quickly out of sight. I think it was a Cloudless Sulphur (Phoebis sennae), likes parks, wood edges, any open disturbed area. No surprise that it's hostplant includes senna that well know herbal laxative, my conjecture is that this probably gives predatory birds some problem.

Send me some butterflies please...