1. UC IPM
Dieback of the leader (main terminal) of a blue spruce from feeding and tunneling by larvae of white pine weevil, <i>Pissodes strobi</i>.
Dieback of the leader (main terminal) of a blue spruce from feeding and tunneling by larvae of white pine weevil, Pissodes strobi.
Credit: Whitney Cranshaw, Colorado State University, Bugwood.org