Source code... You mean the files available to download here:
http://www.bay12forums.com/smf/index.php?topic=147995.0?
If someone were willing to teach me how to make new fortress civs, I'd totally remake the Hivemind Wasps for the current version. I have always had a few images in mind for the different castes.
Soldier:
Drone:
Worker:
And of course, the Queen:
But again, my only problem would be learning to create an entire civ to bring back the Wasps. maybe name it something else to not infringe on creative law crap.
EDIT: After initial testing, it seems that the Wasp files from the above download are working on the current DF. Wierd. Pulpers are going just fine, cement shop working fine. I haven't been able to test the makeown.lua tho so i dunno how breeding will work, if it does.