Small elephant hawk-moth

The small elephant hawk-moth (Deilephila porcellus) is a member of the Sphingidae family within the order Lepidoptera. While often admired for its appearance, this moth is considered a minor agricultural pest in some viticulture regions due to the feeding habits of its larvae.

The primary host plants for this species include members of the Vitaceae family, most notably grapevines, and the Rubiaceae family, such as bedstraw. Larvae prefer to feed on the foliage of these plants, which can occasionally lead to localized agricultural impact.

The life cycle of the moth consists of a complete metamorphosis. They typically overwinter as pupae in cocoons located in the soil or under leaf litter. Adult moths emerge in early summer, and after mating, females deposit eggs on the undersides of host plant leaves.

The larvae are voracious eaters, causing significant damage by consuming the leaves of grapevines. Heavy infestations can lead to partial or total defoliation of the plant, which stresses the vine, reduces photosynthetic capacity, and ultimately negatively impacts fruit quality and yield.

Effective management and control strategies for the small elephant hawk-moth include:

• Regular monitoring of vineyard foliage during the growing season.
• Manual removal of larvae in small-scale plantings.
• Tillage practices that disturb the soil and destroy overwintering pupae.
• Application of biological insecticides containing Bacillus thuringiensis if needed.
• Encouraging natural predators such as birds and parasitic wasps to maintain population balance.