Deploying mycelia of symbiotic fungi as means of extracting nutrients from trees freed ambrosia beetles from facing the defense mechanisms of trees. As a result, host tree range of some ambrosia beetles seem nearly unlimited. Hulcr, Cognato and colleagues from Papua New Guinea reared ambrosia beetles from wide variety of rainforest trees, thereby testing factors that may govern ambrosia beetle species selection – tree phylogenetic identity, wood density, and water content. Surprisingly, we found out that, with sufficient sampling, one can rear most ambrosia beetles from almost any species of tree