The story is different when it comes to Swallowtail butterflies. We've had far more of these fast-flying butterflies than we've ever had in the past.
Swallowtail Butterflies (Papilio polyxenes) use fennel, parsley, and dill for their host plants. We have some fennel where caterpillars have been munching.
 Swallowtail Caterpillar |
 Another Caterpillar |
While Monarch caterpillars hang in a "J" shape before they pupate, these Swallowtail caterpillars create a silk "seatbelt" for themselves, and curl with their heads upright. Interestingly, when these caterpillars have pupated, we've seen two very different looking pupae. On a wooden post, the pupa is mottled blacks and browns, while on the fennel stalk the pupa is yellows and greens. We don't know if it's camouflage, or if we are seeing two different species.
 Caterpillar with Silk "Seatbelt" |
 Dark Pupa |
 Green Pupa |
Yesterday, the dark pupa eclosed. I wasn't there when it happened, but I discovered the butterfly shortly afterward. It had damaged its right fore-wing. I was worried that it might not be able to fly. However, after an hour, it had fluttered a short distance, and was resting in the sun. A few hours later, it was gone. I hope that it succeeded in flying off to new adventures!
 Just Eclosed |
 Pupa after eclosure |
 Sunning |
 Wing Detail |
(as always, you can click on the pictures to see bigger versions).
