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Dioryctria yiai is a species of snout moth in the genus Dioryctria. It was described by Mutuura & Munroe, in 1972, and is known from Taiwan and China.
There is one generation per year.
The larvae feed on Pinus massoniana. They damage the branches, cones and shoots of their host plant. The species overwinters in the larval stage within the damaged branch, cone or shoot.
References
Dioryctria yiai Wikipedia(Text) CC BY-SA