(Salem, OR) -- A tiny bug found on the central Oregon Coast is drawing a lot of attention. The spruce aphid is exotic and invasive but can injure Sitka spruce by sucking moisture and nutrients from older needles. The aphids feed in February and March, but the damage is often not detectable until early summer, when needles drop. Sitka Spruce can grow to between 125 and 180 feet tall, although many of the largest in Oregon were cut down in the early 20th century to build airplanes, violins, guitars and pianos. The Oregon Department of Forestry has started searching for the bug following an outbreak in Yachats