The chrysalis is from the Black Swallowtail (Papilio polyxenes) and was located on a parsley plant (Petroselinium crispum) which is one of their normal host plants. The small parasitic wasps(?) are the creatures that I seek to identify. I will attach a second photo in the form of a reply to this thread. I assume that at the point of their emergence the chrysalis is merely a hollowed out mummy? No further signs of life occurred for the remainder of the season.
Bob
CLOSED: Parasites emerging from chrysalis
These parasitic wasps likely are in the family Pteromalidae - see http://tinyurl.com/4vup3tm for an example. Unlike the braconids that parasitize hornworm larvae, these wasps pupate inside their host and then chew their way out. Your chrysalis is indeed a goner.
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