Ken Gonyo (Class of 2012) sent this photo of a well-camouflaged giant swallowtail butterfly (Papilio cresphontes) chrysalis on his hercules club (Zanthoxylum clava herculis).
Giant swallowtail butterflies complete 2 or 3 generations in Florida and in their 5 larval (caterpillar) stages (instars) feed on plants in the citrus family (Rutaceae). Hence, the commercial citrus industry considers them to be pests.
When ripe, each fruit capsule will be tan and will contain a shiny black seed that is spread by birds. Hercules club can be a wonderful landscape addition to attract birds & butterflies to your yard.
At the Oslo Riverfront Conservation Area, it was planted in 1998 near the DOT ditch which you traverse to gain access to the main east-west trail. Seedlings have been found growing at the south Oslo Riverfront Conservation Area, a testimony to its drought tolerance.