| Home | Kingdom Animalia | Phylum Arthropoda | Class Insecta | Order Coleoptera | Suborder Polyphaga | Family Brentidae | Common Name: Straight-Snouted Weevils |  |
Brentidae
Straight-Snouted Weevils
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Introduction:
The shape of brentids is generally variable, but many are parallel-sided and elongate. The elongate rostrum is generally very straight. Antennae are straight as well and insert at the middle of the rostrum. Some subfamilies (Brentinae, Cyphagoginae, Trachelizinae, and Apioninae) exhibit sexual dimorphism in the size and form of the rostrum.
The shape of brentids is generally variable, but many are parallel-sided and elongate. The elongate rostrum is generally very straight. Antennae are straight as well and insert at the middle of the rostrum. Some subfamilies (Brentinae, Cyphagoginae, Trachelizinae, and Apioninae) exhibit sexual dimorphism in the size and form of the rostrum.
Adult Diagnosis:
vestiture generally lacking (some species with slight pubescence or rarely, scales)
rostrum generally straight
antennae straight, sometimes with a small, terminal club
tarsal formula 5-5-5, but pseudotetramerous (4th tarsomere reduced and concealed by lobe of the 3rd)
ventrites 1-2 connate
vestiture generally lacking (some species with slight pubescence or rarely, scales)
rostrum generally straight
antennae straight, sometimes with a small, terminal club
tarsal formula 5-5-5, but pseudotetramerous (4th tarsomere reduced and concealed by lobe of the 3rd)
ventrites 1-2 connate
Ecology:
Members of subfamilies Brentinae, Cyphagoginae, and Trachelizinae found under the bark of trees; females in these subfamilies use the rostrum to excavate holes for oviposition; members of the subfamily Cyladinae are associated with sweet potatoes; larvae of some Nanophyinae can cause galls in certain fruits, leaves, and stems; larvae of Apioninae mine through stems of various plants
Members of subfamilies Brentinae, Cyphagoginae, and Trachelizinae found under the bark of trees; females in these subfamilies use the rostrum to excavate holes for oviposition; members of the subfamily Cyladinae are associated with sweet potatoes; larvae of some Nanophyinae can cause galls in certain fruits, leaves, and stems; larvae of Apioninae mine through stems of various plants
