No offense Matt, but those aren't what I would consider sulphur yellows. Don't get me wrong, they are very nice looking, especially that light female. As far as I am aware, Len was never able to get that male sulphur to reproduce before it passed.......but I could be wrong. Here are a couple of pics I found today.


This is the one pictured below, but is now an adult. This was taking right after I moved into my house last Oct. I forgot I had the pics on my computer. This is pretty close to what they look like in person, but believe it or not, the yellow is still a little washed out by the blue sky. Pretty close, but not as rich as in person. The pics were taken on a clear day as the sun was setting.....that's why your seeing that blue cast on the top of the head.
Brandon Osborne