Part of true bugs  order Hemiptera and 🐝︎ insect  class Insecta.

Native to East Asia. Invasive > learn+quiz Invasive > in USA+Canada Invasive > report it! Invasive > in Michigan Invasive > more info in Michigan inv. summary sheet (.pdf page 4)

For kids!  This insect described in invasive species placemat (.pdf) series

HWA feeds by sucking sap from hemlock  genus Tsuga and spruce  genus Picea trees.  In eastern North America, HWA has destroyed large forests, and threatens other forests, of eastern hemlock  Tsuga canadensis and Carolina hemlock  Tsuga caroliniana.

How to treat hemlock trees for hemlock woolly adelgid.

Learn more about hemlock woolly adelgid (HWA) Adelges tsugae

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