Populus-specialist
Guides
Aceria parapopuli
Poplar Budgall Mite
Aceria parapopuli is an eriophyid gall mite that specializes on Populus (poplar/cottonwood) hosts. Research demonstrates that this mite exhibits genetic divergence driven by hybridization in its host plants, with distinct ITS1 sequence differentiation across multiple cottonwood hybrid zones. The species serves as a model for understanding how plant hybrid zones function as essential habitat and evolutionary drivers for dependent herbivores.
Phyllocnistis populiella
common aspen leaf miner, aspen serpentine leafminer, Aspen Serpentine Leafminer Moth
Phyllocnistis populiella is a microlepidopteran leaf-mining moth in the family Gracillariidae. It has become common and abundant in western North America, where it feeds exclusively on Populus tremuloides (trembling aspen) and P. balsamifera (balsam poplar). Larvae create serpentine mines in the epidermal layer of leaves, with heavy infestations causing mid-summer defoliation. The species exhibits remarkable cold hardiness, overwintering as larvae in leaf litter with freeze tolerance to -40°C.