Antonelli, Art

The spruce aphid, Elatobium abietinum, is destructive of the spruce forests, especially Sitka. Aphid numbers are greatest in February and March, before their damage is discovered. Where damage ...

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Photographs and descriptions identify the white pine weevil, (Pissodes strobi), which is also known as the Sitka spruce weevil. Found throughout the western states, t ...

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Tapinoma sessile (Say), the odorous house ant, is a widely distributed native species found throughout the United States, in Canada, and Mexico. The common name of this ...

This manual is intended to help beginning pest control operators prepare for Washington State pesticide licensing exams.

This manual is designed to improve the knowledge and skill of structural pest inspectors (SPIs) in Washington State. It provides instruction on how to conduct a structural pest inspection.

The walnut husk fly, Rhagoletis completa Cresson, can become a serious pest of walnuts throughout the Pacific Northwest. While the larvae of this fly feed directly on walnut husks, their feeding will ...