Elephant hawk-moth

The Elephant hawk-moth (Deilephila elpenor) is a member of the Sphingidae family within the order Lepidoptera. While adults are known for their spectacular appearance and hovering flight, their larvae are notorious for causing significant foliage damage to various host plants.

This moth primarily targets species like willowherbs and bedstraws, but in agricultural and garden settings, it is frequently found on grapevines and fuchsias. While rarely a major commercial threat, in residential gardens, they can cause localized destruction of foliage.

The life cycle involves an overwintering pupal stage, typically buried in loose soil or leaf litter. Adult moths emerge in late spring or early summer. They lay small, greenish eggs on the underside of host plant leaves, which hatch into larvae that grow rapidly over several weeks.

Larval damage is characterized by rapid defoliation. As the caterpillars mature, they consume vast amounts of leaf tissue, often leaving only the tough midribs behind. This damage weakens the plant, reducing its ability to photosynthesize effectively and potentially impacting its vitality.

To control the Elephant hawk-moth population in your garden, consider the following strategies:

• Manual removal of caterpillars, which are easily spotted by their distinct size and "horn" at the rear.
• Encouraging natural predators such as birds, parasitic wasps, and ground beetles.
• Using biological insecticides containing Bacillus thuringiensis during the early larval stages.
• Maintaining good sanitation by clearing leaf litter where pupae may overwinter.
• Applying targeted contact insecticides if infestations become severe and threaten plant health.