Spotted Lanternfly


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The Washington Invasive Species Council hosted a webinar to introduce a draft of the state’s spotted lanternfly action plan. You can watch the webinar online here

You can read the action plan by downloading it here.

What is spotted lanternfly?

The spotted lanternfly threatens many fruit crops and trees. Learn how to spot it and report it.

First discovered in Pennsylvania in 2014, it has become a major pest in that state and spread to several surrounding states. Interceptions of dead SLF specimens have taken place in Oregon and California during regulatory inspections. WSDA has responded to a number of reports in Washington that have all turned out to be negative.

Spotted lanternfly feeds on a wide range of fruit, ornamental and woody trees, with tree-of-heaven being one of the preferred hosts. 

According to USDA APHIS, the following crops are at risk from spotted lanternfly: 
  • Almonds
  • Apples
  • Apricots
  • Cherries
  • Grapes
  • Hops
  • Maple trees
  • Nectarines
  • Oak trees
  • Peaches
  • Pine trees
  • Plums
  • Poplar trees
  • Sycamore trees
  • Walnut trees
  • Willow trees
Many of these are major crops in Washington State. 

Identifying spotted lanternfly

Spotted lanterfly looks drastically different in its various stages of development. Learn to recognize these different forms and report them if you see them. 

Spotted lanternfly first instar nymph (immature). This coloration persists through the third instar. Credit: itchydogimages Photo credit: Rkillcrazy

Spotted lanternfly fourth (final) instar nymph (immature). Credit: Pennsylvania Dept. of Agriculture

Profile of spotted lanternfly adult at rest. Note the wings are held tent-like over the back of the insect. Credit: Pennsylvania Department of Agriculture

Adult with mud-like egg mass on a trowel. Credit: Pennsylvania Dept of Agriculture 

Photo credit: WSU CAHRNS Communications

Report spotted lanternfly sightings

If you think you have seen spotted lanterfly, please photograph it and note the location to report it, before killing it.
 

Stay informed

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