Fast Facts

  • Classification
    Species
    spectabilis
    Genus
    Chrysolopus
    Family
    Curculionidae
    Super Family
    Curculinoidea
    Suborder
    Polyphaga
    Order
    Coleoptera
    Class
    Insecta
    Subphylum
    Uniramia
    Phylum
    Arthopoda
    Kingdom
    Animalia
  • Number of Species
    6,000
  • Size Range
    1.5 cm - 2.5 cm

Introduction

True weevils belong to the largest beetle family (Curculionidae) in Australia. There are over 6,000 known species with many more to be discovered and scientifically described.

Identification

Most weevil species have a long snout that they use to chew holes in plants for food and to make egg chambers.

Habitat

The Botany Bay Weevil lives in urban areas, forests and woodlands.

Distribution

The Botany Bay Weevil is found in south-eastern Australia.

Feeding and diet

Weevils feed almost exclusively on plant material.The larvae are usually legless and also eat plant material.

Other behaviours and adaptations

The Diamond Beetle, or Botany Bay Weevil, was one of the first Australian insects to be described from material collected in 1770 by Joseph Banks, a naturalist who landed at Botany Bay with Captain Cook. The Diamond Beetle is still common there and feeds on acacias. Adults snip off twigs while the larvae feed on roots.

Economic impacts

Some weevil species are serious pests that threaten trees, vegetables and grain crops. Other species are useful biological control agents of weeds, such as Lixus, used in the control of thistles