Red palm weevil

Definition

A large snout beetle (Curculionidae), primarily Rhynchophorus ferrugineus, whose larvae tunnel destructively through palm trunks, often killing coconut, date, and oil palms. Adults are 2–4 cm long and typically rusty red, though color variants occur. Native to South and Southeast Asia, it has spread globally and is now a regulated quarantine pest in many palm-growing regions.

Etymology

From the characteristic reddish coloration of adults and its exclusive association with palms (Arecaceae) as host plants.

Example

Detection of red palm weevil infestation relies on acoustic sensors that amplify the chewing sounds of larvae deep within palm trunks, since external symptoms often appear only after irreversible damage has occurred.

Synonyms

• Asian palm weevil
• sago palm weevil
• Rhynchophorus ferrugineus

Related Terms

• Rhynchophorus
• Curculionidae
• phytophagous
• boring insect
• quarantine pest
• Rhynchophorus palmarum
• palm borer

Usage Notes

The name properly refers to Rhynchophorus ferrugineus, though 'red palm weevil' has been applied loosely to related Rhynchophorus species with reddish adults. Specialists distinguish it from the South American palm weevil (Rhynchophorus palmarum) by geographic origin and minor morphological differences. The term is used in both common and regulatory contexts; formal publications usually give the scientific name to avoid ambiguity with color variants or related species.