ColeopteraChrysomelidae – Leaf Beetles

Australian Tortoise Beetle

Trachymela sloanei

This record describes Trachymela sloanei (species). Recorded family: Chrysomelidae. Recorded order: Coleoptera.

Identification and Appearance

Australian Tortoise Beetle - Trachymela sloanei
Contributed by Phillip Harpootlian; Additional contributions by Beatriz Moisset , Mike Quinn , Harsi S. Parker

Introduced from Australia. First recorded in 1998 in California.

Classification

Kingdom
Animalia
Phylum
Arthropoda
Class
Insecta
Order
Coleoptera (Beetles)
Suborder
Polyphaga
Superfamily
Chrysomeloidea
Family
Chrysomelidae (Leaf Beetles)
Subfamily
Chrysomelinae
Tribe
Chrysomelini
Genus
Trachymela

Imported taxonomy record. Source availability varies; see the source references and editorial policy below.

Habitat and Range

Geographic Range

California and Arizona? (note in comments)

Diet and Behavior

Diet: Eucalyptus

Additional species information

Species notes from the sources

Etymology: Trachymela sloanei (Blackburn, 1896)

About Primitive Winged Insects: the wider group

Order-level background for Coleoptera, the group containing Trachymela sloanei. Species-specific details appear above.

Group overview

Coleoptera is the largest order of insects with over 400,000 described species, representing ~25% of all known animal species and ~40% of all insects. In the U.S. alone, nearly 30,000 beetle species have been identified.

Ecological role of the group

Beetles are prominent decomposers, especially in forests, breaking down dead wood and recycling nutrients. As predators, they reduce populations of pest insects. Many species are also important pollinators of flowering plants.

Economic and practical significance of the group

Beetles have major economic significance: leaf beetles (Chrysomelidae) and weevils (Curculionoidea) are among the most destructive agricultural pests globally, costing billions annually, while predatory species like ladybugs provide natural pest control.

Recorded sources for this group: Britannica, Smithsonian, NCSU Entomology. Imported estimates may describe particular regions or reporting periods.

Explore Coleoptera families and species →

Photos of Australian Tortoise Beetle (5)

Australian Tortoise Beetle - photo 1
Contributed by Phillip Harpootlian; Additional contributions by Beatriz Moisset , Mike Quinn , Harsi S. Parker
Australian Tortoise Beetle - photo 2
Contributed by Phillip Harpootlian; Additional contributions by Beatriz Moisset , Mike Quinn , Harsi S. Parker
Australian Tortoise Beetle - photo 3
Contributed by Phillip Harpootlian; Additional contributions by Beatriz Moisset , Mike Quinn , Harsi S. Parker
Australian Tortoise Beetle - photo 4
Contributed by Phillip Harpootlian; Additional contributions by Beatriz Moisset , Mike Quinn , Harsi S. Parker
Australian Tortoise Beetle - photo 5
Contributed by Phillip Harpootlian; Additional contributions by Beatriz Moisset , Mike Quinn , Harsi S. Parker

Photo credits: Contributed by Phillip Harpootlian; Additional contributions by Beatriz Moisset , Mike Quinn , Harsi S. Parker

Frequently Asked Questions About Australian Tortoise Beetle

What is Australian Tortoise Beetle?

Australian Tortoise Beetle (Trachymela sloanei) is a species in the family Chrysomelidae, within the order Coleoptera.

How big is Australian Tortoise Beetle?

6-7 mm

Where is Australian Tortoise Beetle found?

Range: California and Arizona? (note in comments)

What does Australian Tortoise Beetle eat?

The diet of the Australian Tortoise Beetle includes Eucalyptus.

How we use and review source data. Source count does not imply independent verification.

Photo credits: Contributed by Phillip Harpootlian; Additional contributions by Beatriz Moisset , Mike Quinn , Harsi S. Parker. Contributors retain copyright over their individual contributions.