07-09-2016—Naked Milkweeds

Monarch caterpillars have eaten tropical milkweeds down to sticks. Native milkweeds (A. speciosa and fascicularis) remain untouched.
Milkweed without leaves
Milkweed without leaves


Since then, I've seen monarch caterpillars in strange places, looking for their next meal—on the driveway, exterior stucco, and pictured below on Lepisorus bicolor.
Monarch caterpillar on fern
Update 07-15-2016: Unbeknownst to me the monarch caterpillar formed chrysalis on fern. I saw the butterfly emerging.