Resource Sharing between the Invasive and Native Woodborers and Beetles in Plantations.

, a European woodwasp, occasionally shares resources with the native and other colonizers in northeast China. The impact of its coexistence on individual species remains unclear. Random sampling was conducted to assess the patterns and extent of insect co-colonization across various spatial scales. Additionally, we analyzed wood sections to determine the density, adult size, and distribution of the two species. Spatial scales revealed negative associations ( and sp.) and neutral ones () between woodwasps and other co-colonizers. Clustering of woodwasps and sp. occurred at a small scale (0-7.3 m). Regression analysis showed a positive correlation between the chance of woodwasp attacks and past attacks on the same host, with little impact from other colonization factors. The distribution and body size of within the tree appeared unaffected by 's presence. In the presence of , tended to lay eggs in damaged sections. At the stand level, the overall impact of on population density is likely positive because prefer weaker trees, a preference potentially influenced by initial attacks from on healthier hosts.