Today while searching for caterpillars I found a spider nomming a Heliconius genus butterfly. The spider was surprisingly small to have taken down such a large prey item. Not sure yet on the species involved and suggestions are welcome! Here are some photos of the action:
Heliconius sp. (Nymphalidae) caught by a spider
I'm not yet sure whether this Heliconius is an aposematic or mimetic species. I suspect that the chemical defence (and colourful warning signals) of Heliconius are directed towards birds, so for this spider it probably doesn't matter either way. It seems many insect species that are unpalatable to birds are fully palatable to invertebrate predators.