Always follow label directions prior to applying any registered material. For this pest, coverage is especially important. Introduced pine sawfly larvae are feeding on Scotch pine in Dauphin County. This habit makes these larvae harder to find but, tends to lessen damage. Only on rare occasions is significant damage done by this species.
White pine is a preferred host for introduced pine sawfly.
Pine spittlebugs are maturing and adult emergence should occur within the next week or two. If you are planning on spraying for this insect, examine 20 or more spittlemasses. Striped pine scale crawlers are active on Scotch pine in Snyder County. In Centre County, pine tortoise scale has started to deposit eggs, but no crawlers were detected. These two soft scale pests of pines are difficult to distinguish in the field.