Species

Thecabius populimonilis (Bead-like cottonwood gall aphid)

Thecabius populimonilis. Photo: (c) Kim Cabrera, some rights reserved (CC BY-NC-ND)

iNaturalist • Wikipedia

Woolly aphids (subfamily: Eriosomatinae) are sucking insects that live on plant fluids and produce a filamentous waxy white covering which resembles cotton or wool. The adults are winged and move to new locations where they lay egg masses. The nymphs often form large cottony masses on twigs, for protection from predators. They occur throughout the Northern Hemisphere.

— Wikipedia

Sightings

Where in Humboldt

Discussion

PLEASE SHARE YOUR THOUGHTS ABOUT THECABIUS POPULIMONILIS, THE BEAD-LIKE COTTONWOOD GALL APHID