logo150 Hamilton County Soil & Water Conservation District  

Sirex Woodwasp

Hamilton County Distribution

  • Town of Arietta


  • Insect
  • Adults are 1 - 1.5 inches long with a spear-shaped plate at end of abdomen
  • Females have a dark metallic blue black body and orange legs
  • Males have an orange stripe on abdomen and black hind legs
  • Signs and symptoms include wilted foliage of pines, resin beads at egg-laying sites, and round exit holes where adults emerged


  • Females inject a symbiotic fungus, mucus, and eggs into tree, and the fungus and mucus kill the tree, allowing the larvae to develop
  • Pine plantations and forests


  • Biocontrol
  • Slow the spread and don’t move firewood

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The District’s accomplishments would not be possible without the support of the State of New York, Hamilton County, and FLLOWPA.