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Occurrence Patterns and Control Methods of the Sweet Potato Hornworm
The sweet potato hornworm, Herse convolvuli (Linnaeus), belongs to the order Lepidoptera, family Sphingidae. It is distributed in Japan, and in China it is also found in Liaoning, Hebei, Henan, Shandong, Shanxi, Zhejiang, Taiwan, China, Guangdong and other provinces. It mainly damages plants of the Convolvulaceae, Solanaceae and Fabaceae. I. Morphology
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What are the control techniques for the sweet potato hornworm?
The sweet potato hornworm belongs to the order Lepidoptera, family Sphingidae, and mainly harms sweet potato. The larvae feed on the leaves and tender stems of sweet potato, and in severe cases can strip the leaves completely, greatly affecting yield. In Henan Province, it has 3-4 generations per year, overwintering as pupae 10 cm below the soil surface. It emerges in May of the following year. The adults hide during the day and fly out to activity after dusk. The adults are strongly phototactic...
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