native to, and widespread across the Palaearctic(4)
coniferous forests, esp. young pine stands, prefers trees at margins/clearings(4)
earliest record in our area: PA early 1900s; adventive populations were established over a century ago but in 1961 reared S. suturalis from Germany were also relaesed in MI to control the hemlock woolly adelgid (Adelges tsuga) (3)
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