Pitfall traps and trunk wraps (not shown) can be used to monitor adults of many soil-dwelling weevils. Construct traps from a funnel (at bottom right) or smaller cup with a hole in its bottom (left) fit inside another cup that is buried near plants so that weevils walking on the soil surface fall into it and are prevented from climbing out. Credit: Adapted from an illustration by Valerie Winemiller.
