identify ambrosia beetle
A large chestnut oak has died. I collected a larva from under the bark. The xylem (I think) is filled with fungus, and smells nice & mushroomy. I'll upload pictures of the larva and the fungus. Can it be identified? Is it the native kind or the invasive kind?
Montgomery County Maryland
This is not an ambrosia beetle larva. This is a type of longhorn beetle (cerambycid). They are heartwood dwellers and can cause structural problems in a tree. We cannot necessarily say if they contributed to the loss of your oak or if they are secondary invaders (took up residence once the tree was already weakened and declining).