Pterocomma
Guides
Pterocomma smithiae
black willow aphid
Pterocomma smithiae is a species of aphid in the family Aphididae, commonly known as the black willow aphid. It is specialized on willow (Salix) hosts and is notable for its dark coloration and tendency to form dense colonies on twigs and branches. The species has been documented across North America and is frequently observed by naturalists.