pupa problems

[He. katie]

I've noticed that many of my pupas have been turning black. Usually this is around the center of the pupa, then it spreads around the whole thing. My sister recently had one that didn't make it and turned white around one side, but on the other it was transparent and the monarch inside was completly visible. She waited for a week, and the butterfly never came out. She decided to dissect the poor guy because he looked like he was rotting in there.
It turned out that the adult monarch had no head, the abdomen was rotted... but he was moving and everything. The weirdest part is that the wings had no color at all, they were white and black.

Something fishy is happening with all my monarchs, many of them will pop out of their pupas with missing legs, or can't seem to get their tounges rolled up. A few tried to make their pupas and turned out mutated and were too small. But many of them were shrips-their wings spands didn't even top two inches.
I am certian that there are no pesticides in my lawn, or any of the lawns near my house, which is where the milkweed is. Is there a possible cause for the monarchs getting mutated, or pupating too soon?

[chabeda]

did you buy them, find them, or raise them?

one of mine turned black but the others are doing well.
http://www.monarchwatch.org/forums/viewtopic.php?t=480