Isitt R.L., Bleiker K.P., Pureswaran D.S., Hillier N.K., Huber D.P.W. 2020. Local, geographical, and contextual variation in the aggregation pheromone blend of the spruce beetle, Dendroctonus rufipennis(Coleoptera: Curculionidae).  Journal of Chemical Ecology in press. FREE TO READ