What's Hot More sawflies. This one is the curled rose sawfly, found on rose at Temple University. Like most sawflies, hand removal is the best option when populations are low. White pine sawflies are more common and prevalent now in the landscape. Look for ivory white larvae with a black head.
Sawflies feed in dusters.
White pine sawfly can cause areas of defoliation within a tree. Hand pick and destroy larvae or treat with Orthene, Merit or one of the broad spectrum contact pesticides. Crawlers of elongate hemlock scale are still present on some hemlocks. Control crawlers with Orthene, Merit or Cygon. Reduce overwinting populations once crawlers have settled with dormant oil.