The pine root collar weevil (Hylobius radicis Buchanan) is a continuous threat to young pine plantations in the northeastern United States and the adjacent Canadian Provinces The female weevil oviposits during the daytime (Wilson, 1968a) near the root collars of red pine (Pinus resinosa Aiton), Scotch pine (P. sylvestris L.), and jack pine (P. hanksiana Lambert), and occasionally other pines. During recent studies on the weevil (Wilson 1968a, 1968b) in Michigan, egg data were taken for use in population and sampling research. Presented here are distribution patterns of eggs within and between trees and throughout the oviposition period, and some implications for assessing populations.
Wilson, Louis F.
"Spatial and Seasonal Distribution of Pine Root Collar Weevil Eggs in Young Red Pine Plantations,"
The Great Lakes Entomologist, vol 8
Available at: https://scholar.valpo.edu/tgle/vol8/iss3/5