Bug Identifier
Black Vine Weevil
Community identification

Black Vine Weevil

Otiorhynchus sulcatus

Order & Family
Coleoptera: Curculionidae
Size
Approximately 8 to 11 mm (0.3 to 0.4 inches) in length.
See this bug in the Encyclopedia

Natural Habitat

Found in gardens, nurseries, and greenhouses; often associated with ornamental plants, berries, and evergreen shrubs. They frequently enter homes seeking shelter.

Diet & Feeding

Adults are generalist herbivores that feed on the leaves of over 100 different plant species. Larvae live underground and feed on plant roots.

Behavior Patterns

Adults are nocturnal and flightless due to fused wing covers (elytra). They reproduce via parthenogenesis (all individuals are females that can lay eggs without mating). They often play dead when disturbed.

Risks & Benefits

They are significant agricultural and horticultural pests that can kill plants by girdling the roots (larvae) or damaging foliage (adults). They pose no physical risk to humans or pets but can be a nuisance when they migrate indoors.