Pine Needle Scale was once a common and troubling pest back when Mugo pines rivaled yews and junipers as one of the most common landscape plants in Ohio and Scotch pine was THE Christmas tree grown in our plantations. However, that's changed over the years. As mugos and Scotch have become less common in our landscapes and Christmas tree plantations, so has the occurrence of pine needle scale.
Conifers: Evergreen Trees and Shrubs - Acadia National Park (U.S. National Park Service)
PDF) Pest Risk Analysis for Chionaspis pinifoliae (Hemiptera
GENERATIONS パーカー Needles 売り切り御免!
Pine Insects Archives - Insect Diagnostic Lab
T4 Tree Services Grand Junction CO
GENERATIONS パーカー Needles 売り切り御免!
Pine needle scale
U.S. environment agency says glyphosate weed killer is not a
Be Alert for Pine Needle Scale Crawlers