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European Pine Sawfly
PSU Entomology — The most common sawfly species that attacks pines in Pennsylvania is the European pine sawfly. The larval stage feeds on the needles of pines growing in landscapes, nurseries, and Christmas tree plantations. Damage caused by larvae results in the ...More…
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European Pine Sawfly
University of Illinois Extension — The adult is a wasp-like insect that is rarely seen. The larva has a black head, a green body with light and dark stripes. Larvae hatch in early May from overwintering eggs that were laid in crescent shaped slits in the needles of conifers. ...More…
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White Pine Sawfly
Forest Pests — White pine is the primary host, with pitch, shortleaf, red and Swiss mountain pines attacked occasionally Look for pale yellow larvae with black heads and four rows of black dots going down their length (a). Larvae are present from July through ...More…
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Virginia Pine Sawfly
Forest Pests — Heavy defoliation by the Virginia pine sawfly for two or more years can weaken trees and make them more susceptible to other insects and diseases, particularly when associated with drought. In commercial shortleaf pine stands, the growth loss ...More…
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Redheaded Pine Sawfly
Forest Pests — Preferred hosts are red, Scots and jack pines. Also attacked are shortleaf, loblolly, slash, pitch, Swiss mountain, Japanese black, mugho pines, white pine, larch, deodar cedar, and Norway spruce Look for sites where eggs have been laid in ...More…
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Loblolly Pine Sawfly
Forest Pests — This species is one of the most important defoliators of loblolly and shortleaf pine in the south-central states. In heavily infested areas, trees may be completely defoliated in the spring before new shoots have developed. Periodic outbreaks ...More…
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Introduced Pine Sawfly
Forest Pests — Preferred hosts are white and Scots pines, but jack, red, and Swiss mountain pines may be attacked Larvae are marbled yellow-green with black stripes down the back and yellow and white spots on the sides (a). They may be found between late May ...More…
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European Pine Sawfly
Forest Pests — The larvae of more than 10 species of sawfly feed on pine needles. Some of the more common species are included here. Sawfly larvae differ from the caterpillars of moths and butterflies in having more than five pairs of abdominal prolegs which ...More…
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Blackheaded Pine Sawfly
Forest Pests — This sawfly, which ranges from Virginia to Texas, prefers loblolly and shortleaf pines but also feeds on slash, longleaf, and pond pines. Because heaviest defoliation occurs during late summer and fall, trees may go through the winter stripped of ...More…
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European Pine Sawfly
Old House Web — Pine sawflies are pests of pines. They are often confused with moth larvae but the adult of these insects is more like a fly. The insects overwinter as eggs that hatch out during a two week period in early May. The insects feed for 4 to 6 weeks. ...More…
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European Pine Sawfly
University of Illinois Extension — The adult is a wasp-like insect that is rarely seen. The larva has a black head, a green body with light and dark stripes. Larvae hatch in early May from overwintering eggs that were laid in crescent shaped slits in the needles of conifers. ...More…