Larvae of the leaf beetle Chrysomela lapponica attack two tree species: willow and birch. To fend off predator attacks, their larvae produce toxic butyric acid esters or salicylaldehyde ...

Brown birch trees in both Southcentral and Interior Alaska this summer aren’t signaling an early fall. Rather, they are subject to an infestation of small, leaf-munching larvae. Alaska is in the ...

Is your birch two-toned? Nice green with tan patches, like this…. Pick a leaf and look at it through sunlight. You’ll see a small ‘worm’ inside and some black bits rattling around.