WY CAPS Program
University of Wyoming
Dept. Ecosystem Science & Management: 3354
1000 East University Ave.
Laramie, WY 82071
Photo by Lesley Ingram, Bugwood.org
The Light Brown Apple Moth (Epiphyas postvittana) is a potential pest of many different horticultural and native plants. Its larvae bore into and feed on the fruit. Surveys are conducted because of the presence of potential host material in Wyoming. In the US, it has been found in California. To date, it has not been found in Wyoming. One hundred forty-one total traps have been placed throughout twenty-three counties in Wyoming.
The Wyoming Light Brown Apple Moth Survey is conducted by the Wyoming Pest Detection / CAPS Program. A sticky trap with pheromone attractant is placed on or near the host plant from May until August. The traps are monitored for suspects and serviced once a month. If suspects are found they are sent to the University of Wyoming for further identification.