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Cinara are a group of several species of large brown or black aphids that feed on many conifers including Fraser fir and white pines. Each species of aphid feeds on a particular host.
Cinara aphids survive temperatures well below freezing, thriving in cold weather when few predators are present.
The Cinara aphids typically live in large colonies of up to several hundred aphids. In the spring,Cinara aphids tend to congregate on the terminal, trunk, and upper whorl of branches. In the fall, perhaps because of cooler temperatures, Cinara aphids are more commonly found lower on the trunk and on the lower branches where they are hidden from view.