Anoplognathus montanus, dorsal Click to enlarge image
Christmas Beetles from the Australian Museum Collection. This beetle is yet to have a common name but is known scientifically as Anoplognathus montanus. Image: Mike Burleigh
© Australian Museum

Fast Facts

  • Classification
    Genus
    Anoplognathus
    Species
    montanus
    Subfamily
    Rutelinae
    Family
    Scarabaeidae
    Order
    Coleoptera
    Class
    Insecta
    Subphylum
    Uniramia
    Phylum
    Arthopoda
    Kingdom
    Animalia
  • Size Range
    Length: 23 - 31 mm

Introduction

The species name montanus means “montane”, referring to its earliest recognition from the Dividing Range.

The common name “Duck Billed Beetle” was provided by Diana F.


What does Anoplognathus montanus look like?

Identification

Yellow to red brown, with golden green to purple reflections; head, pronotum and scutellum often darker with stronger reflections then elytra. Underside dark to black; thorax with dense, long, white hair, expect on midline, sometimes sparse, white hairs on metaventral process; abdomen with band of short, flat, white hair across each segment. Legs red brown; tarsi black.



  • Clypeus

    Clypeus: Long; evenly contracted in middle; recurved; front margin slightly flared.

  • Foretibia

    Foretibia: Broad; three distinct tibial teeth.

  • Metaventral process

    Metaventral process: Flat; often with short, flat, white hairs, apex reaching forecoxae.

  • Pygidium

    Pygidium: Red brown; quite smooth; with very few short, yellow hairs and a long yellow anal tuft.



Where is Anoplognathus montanus found?

Distribution

South East Australia; Toowoomba, QLD



What species are similar to Anoplognathus montanus?

Similar species

A. viriditarsis, A. rhinastus

Anoplognathus montanus has dense, continuous bands of short, white setae across the basal margin of its sternites, not restricted to sides or at most with only a single, dotted row along the middle of each.

It is also similar to A. macleayi and A. narmarus, however these species are known from central Australian, and rarely have any colourful reflections.