Question. Can spiders help eggplant farmers control parasites?
Answer. yes
What step-by-step reasoning justifies that answer?

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
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Reasoning: The potato tuber moth is a parasite that targets the plant family Solanaceae, including eggplant. Selenops radiatus is a spider genus in South Africa that effectively controls the potato tuber moth.