Black larvae (probably mature) with white or yellow lateral spots along their length. Seen munching on leaves. Cottonwood leaf beetles are considered pests that consume not only cottonwood (Populus spp.), but also poplar and willow.
Seen in an alpine area with a marsh (near Primrose, Alaska). This bug is native to Central and N. Americas.
See the seeds of this beetle’s host here: https://www.projectnoah.org/spottings/93...
Lat: 60.34, Long: -149.35
Spotted on Jul 12, 2016
Submitted on Mar 10, 2019