In 5 years and almost 500 chrysalides, I have never seen this (see photos, but beware: it hurts to look at them). The first I found on the floor of the cage. That makes me think it was newly formed and fell during the last wriggle, but that is just a guess. (Until this year, I kept a map of each J with the date, but this year has been out of control [after getting nothing in the spring], and now I am just counting B's when I release them.)
I found a second one today, hanging normally, but with the split skin. I have no idea how old it is.
They are being raised in the dining room, as usual. All conditions the same, except more crowded this year.
Also this year, it seems more times than usual the last shed skin has not dropped to the floor but stays at the top of the C, as in the second pic. Related?
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