In the library last fall, students were able to watch eastern black swallowtail caterpillars as they ate and grew. They formed their chrysalides and overwintered. It’s kind of like when bears hibernate and sleep all winter and then wake up in the spring. But when caterpillars wake up, they have become butterflies!
Eastern black swallowtail butterflies are native to where we live.
The caterpillars form a chrysalis (the plural is chrysalides). Moths form cocoons.
Eclose is another way of saying that a butterfly comes out of its chrysalis.
Here is more information about the Eastern Black Swallowtail (Papilio polyxenes).
May 4: Three of our butterflies eclosed over the weekend! Two were male and one was a female. After their wings were dry enough to fly, we opened up the mesh enclosure and let them go. We saw them during the afternoon off and on as they landed in our flowering tree to eat.
One of them even landed on my arm. I think it was saying, "hello!"
The top one is a male. You can tell because the boys wear a "yellow shirt."
The bottom one is a female. You can tell because the girls wear a "blue skirt."
April 26: Ms. Calentine was sitting on her porch and spotted this beautiful butterfly that had just eclosed. But it wasn't an eastern black swallowtail, it was an eastern tiger swallowtail!
She was very surprised! After a few minutes its wings were dry and it flew away.
Tiger swallowtails have more yellow on their wings whereas black swallowtails have more black.
This one is a female. You can tell because the girls "wear a blue skirt." Do you see the blue along the edges at the bottom of its wings near its tails?
Here is more information about the Eastern Tiger Swallowtail (Papilio glaucus).
April 23: Ms. Calentine checked in on the chrysalides today and counted 35 (!) chrysalides. As the weather warms up, hopefully some of these will eclose and emerge as beautiful eastern black swallowtail butterflies.