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2009年46 No.6
A new pest of Cifuna locuples damaging loosestrife, Lythrum salicaria.
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Key Words：Cifuna locuples, loosestrife, bionomics
Abstract： Cifuna locuples Walker as a new pest was found to damege loosestrife(
Lyth
rum salicaria L.) in Wuhan in 2007. The morphology, living habits, life cycle
of C.locuples were studied based on field observation and indoor rearing. Th
e results showed that C. locuples has 3 generations per year and overwinters
as young larvae in Wuhan. The overwinterred larvae start to feed the loosestrif
e during March to April. The adults of 3 generations emerge in the early May, la
te June and midAugust respectively. The adults lay 10-200 eggs in batches on
the back of leaves. The larva has five instars, and first instar larvae feed in ag
gregation. The matured larvae pupate on the back of leaves.