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How to spot and manage emerald ash borer: signs, treatment options and estimated costs
Summary
MDA entomologists outlined EAB biology, the four primary identification methods (S-shaped galleries, larval tail spines, adult beetles, D-shaped exit holes), recommended timing for removals, and described treatment options including insecticides and municipal strategies; homeowners' cost estimate ~ $10 per diameter inch.
Jonathan Ossos of the Minnesota Department of Agriculture provided a biology-focused briefing on emerald ash borer (EAB) and practical guidance for detecting and managing infestations. He said EAB "infestations always begin in the mid to upper canopy and then work their way down a tree," which is why early canopy inspection is important.
Identification: Ossos listed four reliable identification cues: 1) S-shaped serpentine feeding galleries exposed under removed bark; 2) larvae with two small spine-like projections at the tail end (uropods); 3) the adult beetle — about 1/2 inch long with iridescent green wing covers and a…
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