Bright green larvae (3/4 in) with front legs on small bristlecone pine in CO (8500 ft) = sawflies (related to bees/wasps). Feed in groups on old needles. Control: Azadirachtin (neem), horticultural oil/soap (no residual), or rotenone/pyrethrin (short residual). For longer residual: acephate, malathion, carbaryl, esfenvalerate. Spray must contact larvae. Natural products effective for sawflies.
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