I’ve been holding off on this post because there was the real possibility that I would murder these five innocent yet obstinate swallowtail caterpillars. Their collective attitude makes monarchs seem simple and angelic. As of this writing, (November 26- this will probably publish later) everyone is in chrysalis and seem safe.
Everything I read about swallowtails indicated that they would form their chrysalis and overwinter. I was in the habit of getting out of my car and taking a caterpillar head count before even going in the house after work every day. However as we edged into the end of October and actual ice in our rain on Halloween night, these guys showed no sign of decamping the fennel plant for their winter homes.
I fully panicked on November 2, when I came home to find two of them heading inside dead leaves in the grass. Two more were still hunkered down at the base of the fennel where they had been days before; and for the love of Pete, IT WAS COLD!
I bundled everybody up with the plants in the pop-up environment and relocated them to my unheated garage. I was afraid that the heat in the house would further mess with their tiny crawly instincts. Additionally, I could not find an article that would clearly tell me how to proceed. Heated house? Cold garage? Stop messing with shit? Who knew.
At any rate, everybody ramped up their activity level within an hour of being in the garage. I really thought one in the leaf was dead.
However this arrangement lead to idiotic situations where I “needed to take my caterpillars for a walk.” I couldn’t just leave them in a dark, windowless garage all day! Plus the live plants needed the light as well. I would set them out in the sun and hope for the best before going to work every morning. There was one day where it turned extremely cold and rainy before I got home, and I found two of them curled up on the floor of the tent as if they had fallen.
However the longer this went on, the more I worried about their time frame. I now theorize that reason that elementary classes use monarchs to raise and watch in the classroom is that monarchs follow a predictable timetable whereas apparently swallowtails do whatever the fuck they want. I’m not the boss of them!
Finally, I decided that maybe this was more about time than temperature. Everyone’s activity had slowed. One little guy had been in the same spot under the egg carton for days. Another had assumed what I considered the pre-pupal J position, but was not moving forward. I could see the anchoring silks near all of their heads and bums. Around November 10, I decided to bring them into the house to see if warmer environment helped to speed things along. Again, I could not find helpful articles that really spelled out what to do so this was just me rolling the dice. (Potential murderess here!)
Success came on November 16 and 17. One by one, I discovered them in chrysalis. The one on the stick was the first to go. However this is where I cut our ties. Some articles suggested keeping the chrysalis in unheated garages and even your refrigerator, but they also said that some swallowtails have stayed in chrysalis for over a year! I cannot maintain this level of stress or caterpillars in my fridge for over a year. Also between climate change and Ohio’s multiple personality weather patterns, who knows what these guys will decide to do.
The one on a stick is firmly planted in a bush where I can see it. The other four are sheltered in a styrofoam and egg carton “hut” that gives some ventilation and an exit strategy if they decide to emerge on one of our freaky high 50’s “winter” days. Hopefully, predators and weather will let all five survive until late spring. Keep ya’ posted!