Figure 6.

The number of visits to each plant by 16 H. horticola in one replicate of the egg-flanked landmark experiment. Each bar plot (a–p) shows visitation by a single wasp. Inverted white bars, visits during training; black bars, visits during testing. The wasps shown are those that visited the array at least twice during both training and testing. Dashed lines, plant 4 (with the eggs and landmarks during training) and plant 7 (which received the landmarks during testing). Of these 16 wasps, 13 increased their visits to plant 7 when the landmarks were moved.