Tuberculatus

Tuberculatus Mordvilko

This is a large genus of mostly tree-feeding aphids that live mostly on oaks, chestnuts, and related plants.  There are few species native to North America, one of which can be stunningly common in the forests of Washington, Oregon, and California where Quercus garryanna grows.

Tuberculatus (Tuberculoides) annulatus (Hartig)

This is a widespread and common aphid of the European oak Quercus robur (Blackman and Eastop).  I have material from Oregon, Idaho, Colorado, New Brunswick, Germany, and Czechia.

Tuberculatus annulatus from southern Idaho in October.
Tuberculatus annulatus from southern Idaho in October.

Tuberculatus (Pacificallis) pallidus (Davidson)

This is another of the aphids that I collected very early in my aphidology life, since it is so incredibly common on oaks in western Oregon where I lived.  The first samples in my personal collection are from 1990, right after I started my Ph.D. program and when my older son was 5 months old.  I have material of this species from Oregon, Washington, California, and Idaho.

Tuberculatus pallidus from Goldendale, Washington in April of 2016.
Tuberculatus pallidus from Goldendale, Washington in April of 2016.