Fall Temporal Activity and Overwintering Sites of the White Pine Weevil, Pissodes strobi,1 in Central Maine2

Abstract

Adult weevils occur primarily on current-year apical buds and stems in north and east crown quadrants of upper crown branches. However, some minor movements occurs during the day. Fall adults are found on upper crown lateral branches while spring adults are predominantly located on the terminals of host trees. Weevils overwinter at the interface between an upper dry needle zone and a lower moist organic zone, ca. 20 cm from host tree boles in west and north litter quadrants.