Texas Gardening: Who's grazing in my fennel !?!!, 0 by Sheila_FW

Sheila_FW wrote:
Some maybe, but most may be crawling off to pupate. They will usually choose a sunny location on something sturdy like chairs, statuary, trellis, and fences.
But sadly most are not going to complete the process to adults. There are a lot of preditors in the wild, some released by farmers to protect their crops. A tiny wasp and fly will lay their eggs under the skin of the cats and after they pupate, a small microscopic fly and wasp will emerge instead of the butterfly. That is why some of us try to hand raise the cats from the eggs, to avoid the parasite's invasion.

http://www.berkeleyswallowtails.com/wsplrva.html