Polyphemus Raising, Round Two:
Fifth Instar Caterpillars and Cocoons.

The start:

The first Polyphemus caterpillars came from Josephine Keeney at the CTMN meeting. She had given away dozens of caterpillars which had hatched from a female she raised. It had deformed wings, but mated and then laid eggs all over her computer and house. So many caterpillars were born that she needed to disperse them for many other people to feed and raise. The story of the first ones she gave me can be found on the previous page.

Thank you Josephine. We try again:


On May 18, 2009, she gave me three chrysalidae cocoons and two large fifth instar caterpillars just about to make its cocoon. She provided a plastic shoebox lined with paper towel and some red oak leaves for food. The three cocoons had already wrapped themselves in paper towels and were pupating when I received them. The two caterpillars were voracious, getting ready to make their own cocoons. Below is a photo and movie of one eating.

May 19, 2009 Voracious eater:

Vocarious eater Movie: Click on movie to play. Note: some browsers may block the movie -- sorry. You have to give permission to view it to your browser.

May 20, 2009 So hungry it eats the leaf petiole and veins:

May 21, 2009 Resting, "fell asleep" in mid bite, getting ready for the big change:

May 22, 2009 3:00 p.m. Starting to spin its cocoon. Notice the silk threads which it wraps around as it rolls and wiggles, pulling leaf and paper towel around it.:

May 22, 2009 3:30 p.m. Cocoon spinning goes fast. All five are now cocooned and hung in a tree to pupate:

Since I had previous raised several types of butterflies, I assumed they should be hung from a branch and would show signs of changes just before they emerged. Because they all wrapped themselves in paper towels, I used the edge of the paper and a spring clip to hang them for their metamorphosis, and put the tree on the patio. I misted it regularly and watched for a sign of change in the cocoons.

Change never came. After a couple months I examined the cocoons. All five had dime-size holes in the bottom where the moths had emerged while I was not watching. I assume all five successfully launched their new lives as moths and flew away.

End part 2. To see the next try, go to part 3 - click here.