So after what feels like forever one of my males has finally hopped on a female... about 24 hours ago. I thought I had noticed a connection, but it did not last very long. He is still on her back and riding around, but hasn't really made many more attempts at connecting. Any thoughts on stimulating him a bit? Other than that I found that putting the females on a palm, next to my heater, and then adding the males seems to work. They only really seem interested in them when they move though, which I accomplished through some light misting. Let's see if the other two pairs pick it up now. Much more difficult than I anticipated.