The larvae then form pupae. This process takes several weeks, but can be considerably longer under cool conditions. The pupae transform into adults around one month later. The TseTse flies are blood feeders, and the females will require several good blood meals, before producing their first larva. | The larvae then form pupae. This process takes several weeks, but can be considerably longer under cool conditions. The pupae transform into adults around one month later. The TseTse flies are blood feeders, and the females will require several good blood meals, before producing their first larva. |