Behavior of the White Striped Longicorn Beetle, <i>Batocera lineolata</i> CHEVROLAT (Coleoptera: Cerambycidae)

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  • シロスジカミキリ成虫の行動
  • シロスジカミキリ セイチュウ ノ コウドウ

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Abstract

The bionomics of the white striped longicorn beetle, Batocera lineolata CHEVROLAT was studied from May to July of 1980 at a coppice consisting mainly of Quercus serrata THUMB., located in Kodaira City, Tokyo. Adult emergence occurred between late May and early June. The average number of adults emerging from a tree was 1 to 2. The behavior of the adults was observed by marking them individually. Newly emerged adults remained on the shoots of the crown. They fed on the bark of the current-year old twig. Mating did not occur until they matured after a certain period of feeding. The mature adults did not always stay on the crown. They left after sunset, mainly between 7:30 and 9:00 P.M., and crawled downward to the foot of the trunk. At daybreak, they began to return to the crown. Mating and oviposition took place during the night. Male adults lay in ambush on the trunk and, when female adults came nearby, copulated with them. Copulation was soon followed by oviposition. Males watched the females in a position of amplexus during the oviposition, which suggested that repeated copulation took place. Females cut the bark with their mandible, inserted their ovipositor into the soft tissue under the bark and deposited their eggs. After oviposition, they sometimes filled the holes made by their apex abdominis with wood dust. The dispersal of mature adults in the tree was determined by the mark-and-recapture method. Male adults dispersed farther and more frequently than female adults. In many instances the same pairs of female and male adults remained on the same tree for several days.

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