I just came across this series. Zootermopsis termites are fascinating for their social plasticity. Looking closely in some of the images, you can see that this soldier has the wingbuds characteristic of individuals destined to become primary reproductives. Thus, this is a soldier-reproductive intercaste, and is probably capable of reproducing at this point. (With that highly scleratized head it will probably not moult again.) These reproductive soldiers fulfill a strange function in the colony that is being studied at the University of Maryland, in the laboratory that I trained in as an undergranduate student. I fondly remember watching different colonies battle one another and noting which caste did what in the battle. I lobbied to give them their own caste name of Assassin, joining the ranks of King, Queen, Neotinic, Worker, and Soldier, rather than call them intercastes, and I think that it is catching on. (Neotinics are the other intercastes- they are worker-reproductives that also often have wingbuds.) From what I witnessed, Assassin is perfect for describing their role in the aftermath of battle.

I'm impressed with your 'homework!' Nice images, too.