Last week while filming on Eastern Point I had the pleasure to meet Kate, who works at Wolf Hill. She was with a friend and they were looking for butterflies through binoculars. I had seen Kate often at the garden center, but never stopped to chat. We were talking about all things butterfly when she mentioned that she had a Black Swallowtail caterpillar on a parsley plant back at the nursery office. She offered the caterpillar to me and I gladly accepted. My Black Swallowtail film is nearing completion but there was one missing piece to the story.
Black Swallowtail Chrysalis ~ Green Form
The swallowtail chrysalides that I had on film were all greenish gold. Oftentimes the Black Swallowtail chyrsalis will turn a woody brown, but no matter how hard I looked, I could not find a woody brown chrysalis. Not showing the brown form, I knew, would confuse viewers, especially families who are interested in raising swallowtails.
Kate’s caterpillar pupated while she was away from work for a few days. When she returned she found the chrysalis had wandered from the parsley plant and it had pupated on the razor thin edge of an envelope-as office caterpillars are want to do. Well, you guessed it–the Wolf Hill pupa was the brown form!
Black Swallowtail Chrysalis ~ Brown Form
I know it is said often on the pages of this blog, but Kate’s thoughfullness goes to show once again what a beautiful community is Gloucester–stunning visually, and most special of all, are the beautiful, kind-hearted people who call Gloucester home. Thank you Kate!
Not finding a brown chrysalis is a relatively escoteric problem, to say the least, but I think you will agree that the two forms of the pupal case are remarkably different in appearance. In this photo you can see where I have taped the envelope behind a tree trunk in order to film. This is how you would find the chrysalis in a more natural setting.
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There are several openings remaining in my Close-up Photography Workshop at the Arnold Arboretum of Harvard University, which will be held this coming Sunday morning at 9:00 am. I would love to see you there! Follow this link to register.
Capturing a sharply in focus close-up of a butterfly, especially one in mid-flight, is one of the greatest challenges of photography and I will be revealing techniques such as these, and more; techniques that have taken many, many hours over many years to perfect. All the photos I have shot in the past year and a half were taken not with a zoom lens, but were shot with a 23mm prime lens. I am typically photographing within a foot’s distance of the butterflies!
Good Morning Gloucester 
Does the greenish gold Chrysalis eventually turn into the brown form? Also, what is hanging from the greenish gold one in the photo?
Thanks. They are beautiful photos!
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Thank you Devera for your kind words.
To my knowledge, no, the green chrysalis does not turn the woody brown color. However, what does happen, that you may find confusing, is that a day or so before the butterfly is about to emerge, you can see the butterfly within the pupal case, which would create the appearance of a change of color.
That thing that looks like it is hanging from the greenish chrysalis is the discarded skin of the caterpillar. The caterpillar was in the midst of pupating while I was photographing. That is its old suit being flung off as it was gyrating during pupation. Lucky capture!
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