Three pupae and a fully developed larva of Black Vine WeevilThe adults emerge from the soil around June, they climb clumsily out and wander in search of food. They feed on leaves at night, leaving tell-tale C marks on the edge of leaves. They appear slow and harmless, and are unable to fly, but they can climb very well and feign being dead and drop to the ground if disturbed, so they tend to be left alone. Adults are all females which reproduce by parthenogenesis giving origin to genetically identical daughters. They can start reproducing by themselves as soon as they are ready, no need to waste time looking for a male and mating, and when they are, they go for it in earnest. At 21 oC, their optimal temperature, they can lay over 1000 eggs over their lifetime of four or five months. This mode of reproduction coupled with its preferred niche in the ornamental and agricultural trade has allowed this species to thrive and expand across the world from their native Europe, so, although I do not like it, I do marvel at its successful life history. What next? We should be getting some parasitic nematodes and watering the pots with them in the hope that they will infect the pupae and stop the invasion.