Pine spittlebugs
Aphrophora parallela

• White foamy mass on twigs and needles
• Small (up to ¼ inch), black and pale yellow nymphs on underside of needles
• Light infestations generally do not cause noticeable symptom
• Moderate to severe feeding can cause needle yellowing, shoot flagging and twig dieback
• Prefers Scots, Austrian and eastern white pine
• More information on Pine spittlebug