Final answer:
The correct answer for which termite swarms on warm, humid nights is D, the Formosan termite. These termites swarm to reproduce and establish new colonies.
Step-by-step explanation:
The term 'sub swarms' in the question seems to be a typo or irrelevant part. Assuming the question refers to termite swarms, the correct answer would be Option D, the Formosan termite.
The Formosan termite (Coptotermes formosanus) is known for swarming on warm, humid nights, especially in the spring and summer months. Swarming is a natural occurrence when termites leave their colony to start a new one, which is an important aspect of their reproductive cycle.