parasitoid wasps

http://bluejaybarrens.blogspot.com/2011/08/jewel-case.html
http://jimmccormac.blogspot.com/2011/07/dont-come-back-as-caterpillar.html
http://mobugs.blogspot.com/2010/10/laurel-sphinx-moths-are-found.html
http://thecommonmilkweed.blogspot.com/2010/10/hike-at-edge-part-2.html
http://thingsbiological.wordpress.com/2010/09/17/parasitized-sphingid-larva/
http://thingsbiological.wordpress.com/2010/08/24/parasitized-caterpillar/
http://jimmccormac.blogspot.com/2010/09/white-marked-tussock-caterpillar.html
http://jimmccormac.blogspot.com/2010/08/our-butterflies-fall-into-two-groups.html
http://matthewwills.com/2010/09/12/munch-munch-munch/
http://bugsafari.blogspot.com/2010/06/caterpillar-troubles.html

and related predatory wasps:
http://bugeric.blogspot.com/2011/01/wasp-wednesday-euodynerus-hidalgo.html