Elephant Hawk-moth caterpillar

Scientific Name: Deilephila elpenor

Order & Family: Lepidoptera, Sphingidae

Size: Larvae (caterpillars) can grow up to 7-8 cm (2.8-3.1 inches) in length.

Elephant Hawk-moth caterpillar

Natural Habitat

Gardens, woodlands, hedgerows, and other areas with its preferred food plants, often near water.

Diet & Feeding

Primarily feeds on willowherbs (Epilobium spp.), especially Rosebay Willowherb (Chamaenerion angustifolium), and also bedstraws (Galium spp.), particularly Lady's Bedstraw (Galium verum) and Hedge Bedstraw (Galium album).

Behavior Patterns

The caterpillar is known for its distinctive 'elephant's trunk' appearance when it retracts its head, inflating the segments just behind it. This, along with its large eye spots, can make it resemble a snake, deterring predators. They are mostly nocturnal feeders. When disturbed, they may rear up their front segments and retract their head to display the eye spots more prominently. They pupate in a cocoon on or just below the ground among leaf litter.

Risks & Benefits

No known risks to humans. As a pollinator in its adult moth stage, it contributes to ecosystem health. The caterpillars are an interesting part of the food web for birds and other predators, and their presence indicates a healthy local ecosystem.

Identified on: 9/20/2025