Lipid content and seasonal activity of Odontopus calceatus (Coleoptera: Curculionidae) adults.

Abstract

Overwintering Odontopus calceatus (Say) adults were first observed feeding on April 10. Weekly collections during the activity period indicated that new-generation adults began emerging June 4. By July 23 they had entered the forest litter for hibernation. Lipid content decreased throughout the hibernation period as the weevils utilized 77% of their total lipid content during The time. The most rapid decrease during hibernation occurred February to March, just prior to mating and oviposition in the spring. No increase in lipid content occurred during me activity period in spring and summer. A great increase in lipid content did occur within a month after the weevils had entered the litter for hibernation. Only quantitative changes in total lipid content were determined.