This past week we were received an email and pictures from Earl Evans a groundskeeper in LeMars, IA of an outbreak of cottony grass scale (Eriopeltis festucae). Dr. Donald Lewis, Iowa State University Entomologist has noted he hs only seen it twice in his career. Dr. Lewis has written an article about cottony grass scale and it can be viewed in the Home and Pest Newsletter. The only other time cottony grass scale was documented in Iowa was in 2009 and that link is available 2009 cottony grass scale. Also the University of Minnesota has some information on cottony grass scale from a previous diagnosis.
Cottony grass scale damage in LeMars, notice the tire tracks are not damaged. Photo courtesy of Earl Evans.
A close up of cottony grass scale on the leaves. Photo courtesy of Earl Evans.
Another close up of cottony grass scale on the leaves. Photo courtesy of Earl Evans.