It sometimes bugs me (so to speak) that almost all of the insectoid aliens presented in sci-fi are depicted as hive-type social insects, such as termites, most ants, or some bees, but not as other interesting models in the insect kingdom.
Look at the humble cockroach, for example. Roaches have neither a king no queen, and they are not divided by caste unlike their relatives - the termites. But they are social and love congregating together, for example in your sewer cistern. From there they emerge at night to forage. They have a society based on anarchistic opportunism - they do have some type of shared decision making, it appears from relatively recent research, and they prosper better in the presence of other roaches. Of course, they are also opportunists, capable of adapting to a huge variety of environs.
This is one of the reasons why I like my insectoid aliens to be anarchistic scavengers and scroungers living in seemingly disorderly - though quite egalitarian - groups, rather than the ordered ranks of a hive.http://www.bbc.co.uk/nature/17839642