The bugs feed on the developing seeds and early flowers of different species of conifers. Females are reported to lay rows of eggs on needles of the host trees, which hatch in about 10 days. Young nymphs then begin to feed on tender cone scales and sometimes the needles. The nymphs are orange and brown, becoming reddishbrown to brown as they develop. Nymphs pass through five stages and reach adulthood by late August.
Adults feed on ripening seed until they seek overwintering quarters.
If these bugs are a problem in your area, be sure to screen attic or wall vents, chimneys and fireplaces to mechanically block their points of entry. Eliminate or caulkgaps around door and window frames and soffits, and tighten up loose fitting screens, windows or doors. There are no pesticides specifically registered for control of this leaffooted bug.