Boring activity on coniferous tree branches byXylotrechus villioni (Villard) larvae (Coleoptera: Cerambycidae) |
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| Authors: | Ryûtarô Iwata Yoichi Sakakibara Fusao Yamada |
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| Institution: | (1) Department of Forest Science and Resources, College of Bioresource Sciences, Nihon University, 252-8510 Fujisawa, Japan |
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| Abstract: | In anAbies homolepis Sieb. et Zucc. forest at Matsumoto, Nagano Pref., cumulative damage byXylotrechus villioni (Villard) (Coleoptera: Cerambycidae) was observed on tree branches. Of the 14 major branches in one sample tree, six had
cumulative damage by boring larvae, of which 3 had been bored by multiple larvae. No adult emergence holes were found on the
whole tree, suggesting very low survivorship from boring larva to emerging adult. Galleries made by single larvae were often
observed to be terminated by a depression apparently carved by a picid woodpecker, suggesting that they are important predators
of the cerambycid. The manner of cicatrix formation with phloem tissue over the larval gallery in anAbies veitchii Lindl. branch at Mt. Fuji, Yamanashi Pref. is presented.
Studies onXylotrechus villioni (Villard) (Coleoptera: Cerambycidae), a primary borer of coniferous trees in Japan (III). This work was presented at the
104th Annual Meeting of Japanese Forestry Society at Morioka (April, 1993) and 20th International Congress of Entomology at
Firenze (August, 1996).
This work is supported by a Grant-in-Aid for Scientific Research (No.02660163) from the Ministry of Education, Science, Sports,
and Culture of Japan. |
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| Keywords: | Abies Cerambycidae larvae Picidae Xylotrechus villioni |
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