The common name of the plant the weelvils live on

cannot be determined without additional context or information. Can you provide more details about the plant or situation?

Weevils are a type of beetle that can infest various plants. The specific plant that weevils live on can vary depending on the species. Some common plants that weevils are known to infest include:

1. Cotton plants: Weevils like the boll weevil (Anthonomus grandis) can be a significant pest in cotton fields, damaging the crop.

2. Rice plants: Rice weevils (Sitophilus oryzae) are common pests of stored rice, but they can also infest rice fields during the growing season.

3. Corn plants: Maize weevils (Sitophilus zeamais) are notorious pests of stored corn, but they can also feed on growing corn plants in the field.

4. Wheat and other grains: Grain weevils (Sitophilus granarius) are common pests that infest stored grains like wheat, barley, oats, and other cereals.

5. Fruit trees: Certain weevils, such as plum curculio (Conotrachelus nenuphar) and apple curculio (Anthonomus quadrigibbus), can infest fruit trees, causing damage to fruits like plums, apples, cherries, and peaches.

Remember, there are many species of weevils, so the plant they live on can vary. If you suspect you have a weevil infestation, it is recommended to consult an expert or contact a local extension service for proper identification and control methods.