Hi, in the mid1980s as a master student, I kept species of several genera like Tetramorium, Myrmica, Lasius in captivity. Clear glass clad with red foil, in a frame as housing. A space of 3mm between the glass plates. This housing allowed very clear observations. The architecture or shape of the holes in sand between the glass plates was different for each of the genera kept.

Hi, a tsetse fly, has a kind of pregnancy. The female sucks mammalian blood, a high energy source. She carries only one offspring at the time, the larvae is in a kind of uterus and is fed a secreted substance. The larvae is 'born' as a third instar. And very quickly enters a pupea stage. So compared to other flies this particular species, could be called a K strategist I think.