About Rosalia funebris Motschulsky, 1845
The banded alder borer, Rosalia funebris, is a species in the highly diverse longhorn beetle family. It is distributed across western North America, ranging from Alaska through California, and also occurs in New Mexico. During spring and summer, banded alder borers can be found on the bark of alder trees. For reasons that remain unclear, R. funebris is attracted to recently painted buildings, and large numbers of the beetles may rest on fresh paint. Like most mature longhorn beetles, adult banded alder borers feed on flowers, while their larvae feed on wood. Rosalia funebris typically lays its eggs on downed trees rather than living trees, so it is not considered a significant pest.
