Aphids
Some species of aphids can cause leaves to curl or twist as they feed on the plant sap. How to prevent aphids To prevent aphid infestations in crops, you [...] Aphids are slow-moving and tend to cluster on the undersides of leaves, where they feed on plant sap. They may also be found on stems, buds, flowers and fruit [...] form a single, very large group of insects: the super- family Aphidoidea, belonging to the order Hemiptera . The aphids discussed here all belong to the