The Nevada Division of Forestry (NDF) is issuing a Forest Pest Alert for the White Satin Moth. This non-native insect is causing medium to heavy defoliation in the North Canyon and Marlette Lake areas at Lake Tahoe Nevada State Park. The NDF has recently mapped approximately 200 acres of defoliation in this area. Sightings in the Carson Valley, Spooner Summit, USA Parkway area and Paradise Valley have also been confirmed. The NDF will conduct aerial surveys throughout Nevada over the next four weeks to determine the extent of the satin moth problem. In addition, NDF will begin trapping in the next week to monitor populations. NDF is requesting if the public has observed the white satin moth or the damage caused by this insect to please contact NDF Forest Health Specialist Gene Phillips at 775-849-2500 ext 5.