Straight-snouted weevils

Definition

A family or collective group of weevils (superfamily Curculionoidea) characterized by an elongated, straight or only slightly curved rostrum (snout), in contrast to the strongly curved rostrum of true weevils in family Curculionidae. Brentidae are typically elongate, often cylindrical beetles with antennae that are straight or gently elbowed, arising near the middle of the rostrum rather than near its tip. The group includes wood-boring and fungus-feeding species, with larvae often developing in dead or dying wood.

Etymology

From the straight, elongated rostrum that distinguishes them from the curved-snouted Curculionidae.

Example

The palm weevil genus *Rhynchophorus* was historically placed in Brentidae due to its relatively straight rostrum, though modern classifications often treat it within a separate subfamily or family; true brentids such as *Brentus* species are found in decaying logs where larvae tunnel through wood.

Synonyms

• Brentidae

Related Terms

• Curculionidae
• rostrum
• Curculionoidea
• weevil
• snout beetle
• wood-boring beetle

Usage Notes

The common name refers specifically to family Brentidae, though some authors use 'straight-snouted weevils' more broadly for any curculionoid with reduced rostral curvature. Brentidae are sometimes treated as a subfamily (Brentinae) within a broader Curculionidae sensu lato in older literature, so taxonomic placement should be verified by source date. The straight rostrum is functionally associated with boring into hard substrates rather than the wedging and feeding mechanics of curved-snouted weevils.