High Survival Rates for the Longicorn Beetle, Apriona japonica (Coleoptera, Cerambycidae) Thomson in Beech Trees (Fagus crenata Blume) Planted in Lowlands.

All of 35 five-year old beech saplings planted in a lowland in a northern part of Ibaraki Prefecture were damaged by the longicorn beetle Apriona japonica Thomson. Survival rates of beetle eggs laid in the trees were very high, 31% of the eggs developed into adults and 27% into larvae in 2 years. These results suggest that beech trees planted in lowlands are susceptible to the longicorn beetle.