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Tiger Swallow Tail
Hello – My children and I are wondering, will this chrysalis transform in to a beautiful Tiger Swallow Tail? We found him crawling up on a wall and housed him in our bug house. We identified the caterpillar that night and the next day he turned into a chrysalis. We read that the last generation of the Tiger Swallow Tail will chrysalis over winter. In the picture we sent, we showed the bug house hanging outside on our deck, under the eves. He has been there all winter. So we are hoping to see a beautiful Tiger Swallow Tail this spring. What time should this happen, approximately? In nature, the caterpillar would have endured winter on a branch or the wall we found him crawling on, right? Your site is awesome! Thank you for taking the time to share all your information and the great pictures.
Thank you,
Karla, Jacob & Isaac
Flathead Lake, Somers, Montana

Hi Karla, Jacob and Isaac,
This is most certainly a Swallowtail Chrysalis. They are distinct in the upright position with the girdle of silk around the midsection. We are guessing perhaps you will see an adult butterfly in May, or perhaps June. It really depends on when spring arrives in Montana. The butterfly will need nectar from flowers to survive, so they will not emerge until there is a food source available. Just make sure the Chrysalis does not get too warm before there are flowers.

What's That Bug? does not endorse extermination
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One Response to Tiger Swallowtail Chrysalis

  1. Abigail Neubert says:

    Me again, glad to find out my tiger swallowtail caterpillar has made it’s chrysalis. It was hanging off the top a little. That had me worried! But, as I’m seeing in this picture- it’s normal. My caterpillar looks like he’s in his chrysalis halfway though.. At the very bottom, it doesn’t look like his body his covered with the cacoon like the top of his body is.

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