Diaprepes root weevil

Definition

A large, flight-capable weevil (Diaprepes abbreviatus) in the family Curculionidae, native to the Caribbean and invasive in subtropical regions of the United States. Adults feed on leaf edges of diverse host plants, while larvae tunnel through roots, causing severe damage to citrus, sugarcane, and ornamental nursery stock. The species is notable for its broad polyphagy—larvae develop successfully on roots of more than 270 plant species—and its association with Phytophthora root rot in citrus, where feeding wounds facilitate fungal infection.

Etymology

From the genus name Diaprepes (Greek, 'splendidly dressed') + root weevil, describing its subterranean larval habit.

Example

In Florida citrus groves, Diaprepes root weevil management requires coordinated soil insecticide applications, biological control using entomopathogenic nematodes (Heterorhabditis and Steinernema spp.), and tree wraps to prevent adult oviposition on leaves.

Synonyms

• Diaprepes abbreviatus
• citrus root weevil
• Sugarcane rootstock borer weevil

Related Terms

• Curculionidae
• root weevil
• Phytophthora
• entomopathogenic nematode
• polyphagy
• invasive pest

Usage Notes

The common name is often shortened to 'Diaprepes' in agricultural extension literature. Distinguish from other citrus weevils such as Pachnaeus litus (blue-green citrus root weevil) and Artipus floridanus (little leaf notcher). The Spanish colloquial name 'chichí' is used in Caribbean Spanish-speaking regions.