I've had a few unidentified pictures of Costa Rican butterflies sitting around since my November trip there. I finally decided to put some effort into finding out what they were. After all, any good naturalist can't let something in nature go unnamed. Now, there IS a Costa Rican butterfly guide. Unfortunately, it's split into 2 volumes and is not very field friendly. It's also highly scientific. Strangely, Amazon only carries the second volume. After some discussion with the author of Firefly Forest about her recent CR butterfly identifications, I decided to put Google to good use. After some searching, I came across the wonderful site Neotropical Butterflies by Kim Garwood and Richard Lehman. Kim and Richard have taken a ton of pictures from Mexico through the Amazon. They've also published a book on the Butterflies of Northeastern Mexico and have an upcoming book on the butterflies of Brazil.
I recommend poking around the site and witnessing the amazing creations of Mother Nature. I especially love the clearwings and the swordtails. One of the coolest butterflies in the world has to be the Octauius Swordtail. With the help of their site, I was able to identify one of my pictures as the Trotschi Eyemark (see below).
Unfortunately, I haven't been able to identify these others yet.
If you happen to have the Costa Rican butterfly field guides, any help would be appreciated.