Dying caterpillars and good chrysalis
by Sandy Haithcock
I had 6 caterpillars of various sizes. One is now a chrysalis, one went to the J, and started the chrysalis, but half way up stopped, and all of the others are just hanging and appear to be dying. If it was some sort of bacteria that infected them, is the one chrysalis safe? Also, what will happen to the half chrysalis,,,,is it dead, or will it turn to some kind of mutant butterfly??
Sandy, it sounds like it could be some kind of monarch disease with that many affected. Check out this link on monarch butterfly diseases. There is a good chance that the chrysalis you do have might be affected. You will just have to wait and see.
Be sure and sterilize with a 20% bleach solution any equipment, cages, etc. that you might use in the future to raise butterflies. I hope this helps.