The range of pales and pitch-eating weevils covers most
of the eastern United States and southeastern Canada. The pales weevil
is the more common of the two species in northern areas and in the Atlantic
Coastal States down to north Florida, whereas pitch-eating weevil is more
common along the Gulf Coast. The ratio of pales to pitch-eating weevils
ranges from 11: 1 in the Southern Appalachians to 2-3:1 on Piedmont and
Atlantic Coastal sites. Along the Gulf Coast, the ratio of pales to pitch-eating
weevils ranges from 1: 10 in southern Alabama to 1:6 in east Texas. These
ratios, which are based on annual trap counts, may vary considerably from
season to season.
Pales weevil adults feed upon most native and exotic
coniferous species, including the following genera: Pinus, Abies, Picea,
Pseudotsuga, Larix, Thqja, Tsuga and Juniperus.
The pitch-eating weevil may feed on many coniferous species,
as does the pales weevil. However, it has been reported in the literature
only on several of the southern pines.