Green Tech Tree

Insects Control & Tree Diseases

Asian Longhorn Beetle

tree care insect control The Asian long-horned beetle (Anoplophora glabripennis) known as the starry sky or sky beetle is native to eastern China, Japan, and Korea. This species has now been accidentally introduced to the United States, where it was first discovered in 1996, as well as Canada and several countries in Europe, including Austria, France, Germany, Italy and the UK. This beetle is believed to have been spread from Asia in solid wood packaging material.

Asian long-horned beetle larvae do not pupate before they reach a critical weight. Accordingly, they may overwinter either as larvae or as pupae, and depending on the weather they generally take about one to two years to complete their life cycles. In extreme cases they might take some three years. In their overwintering phase they are inactive, a dormant condition known as diapause. They resume their life cycle in the following summer. Larvae first create a feeding gallery in the cambial region and later an apparently oval-shaped tunnel in the sapwood and heartwood. However, the oval cross-section might be largely illusory, caused by the angle of cutting through the tunnel; The emergence holes are normal to the wood surface, and look completely round. Larvae expel frass from their tunnels near the original oviposition site. Most individuals overwinter as larvae. Pupation occurs at the end of the larval tunnel usually in late spring and early summer.

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