Fort Collins Tree Care Fort Collins Tree Care  
Dedicated to Tree Preservation
in the Urban Forest
 
Click for a FREE estimate
or call 970.484.3084
Fort Collins Tree Care Fort Collins Tree Care
Click for a FREE estimate
or call 970.484.3084
Dedicated to Tree Preservation in the Urban Forest
Fort Collins Tree Care Fort Collins Tree Care
Click for a free Estimate or call 970.484.3084
Dedicated to Tree Preservation in the Urban Forest
Fort Collins Tree Care
or call 970.484.3084

Damage caused by the pinyon tip moth

The pinyon tip moth larvae feed on new growth of the pinyon pine, killing new shoots, causing twig dieback. They rarely kill a tree, but they can cause it to be deformed.

 

Pinyon tip moth damage Whitney Cranshaw, Colorado State University, Bugwood.org

How to identify the pinyon tip moth

Look for discarded pinyon tip moth skins on dead shoots, tunnels inside dead shoots, twig dieback, holes in cones, masses of pink pitch and general tree disfigurement.

The larvae or caterpillars are light golden brown with a dark brown head, and up to 3/4" long.

The adults are small grayish moths, about 1" wingspan. Their hindwings are grayish white and their forewings have a zig-zag pattern.

 

Pinyon tip moth damage Whitney Cranshaw, Colorado State University, Bugwood.org

Life cycle of the pinyon tip moth

In mid to late May the larvae emerge from their cocoons and start tunneling into the base of unopened buds, feeding on the pith. More mature larvae feed on new growth, either cones or shoots. Mature larvae pupate inside terminals and cones and develop into adults. The adults mate and lay eggs from late June through August. The female pinyon tip moths lay eggs in midsummer. Larvae hatch a few days later, create a silk cocoon attached to the bark in the terminal growth where they overwinter.

Pinyon tip moth larvae Whitney Cranshaw, Colorado State University, Bugwood.org

How to control the pinyon tip moth

The pinyon tip moth has many natural predators, parasitic wasps, ants, spiders, mites, lizards, birds and mice. Spray insecticide in April and May to catch the pinyon tip moths before they tunnel into buds. Later sprays may be able to kill the larvae moving from buds to the new shoots. Two spray applications may be needed.

 

Pinyon tip moth pitch massWhitney Cranshaw, Colorado State University, Bugwood.org

 
International Society of Arboriculture Colorado Weed Management Association Tree Care Industry Association Fort Collins Tree Care Inc.
301 E. Douglas Road
Fort Collins, CO 80524
970.484.3084
Fort Collins Tree Care Inc.
301 E. Douglas Road
Fort Collins, CO 80524
970.484.3084
International Society of Arboriculture Better Business Bureau Colorado Weed Management Association Tree Care Industry Association
website design by FortCollinsWebWorks.com