Longicorn Beetles
Common Eucalypt Longicorn
Eucalypt Longicorn
Wasp-like Longicorn I
Wasp-like Longicorn II
Wasp-like Longicorn III 
Other Tribes
Large Brown Longicorn
One-banded Longicorn
Decora Longicorn
Flower Longicorn
Ant-mimicking Longicorn
Bamboo Tiger Longicorn
Lycid-mimicking Beetle
Fig Longicorn
Sheep Longicorn
Black Small Acacia Longicorn
Motley Small Acacia Longicorn
She-Oak Longicorn
Tea-tree Longicorn
Dark Brown Longicorn
Green Longicorn Beetle
Acacia Longicorn I
Acacia Longicorn II
Other Tribe 
Double-coned Longicorn 
Small Longicorn Beetle
Fern Longicorn Beetle
Unidentified Longicorn


Common Eucalypt Longicorn Beetle - Phoracantha semipunctata


This page contains information and pictures about Common Eucalypt Longicorn Beetles that we found in the Brisbane area, Queensland, Australia.

Body length 25mm
This is a Australian native beetle and became a major pest of Eucalyptus plantations through out the world. 
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We first found this beetle attracted by window light to our backyard in early summer. When we search for information about this insect on the internet, we found this beetle is very famous. 
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Their larvae are the Eucalyptus wood borers which damage the timber. As the Australia native Eucalyptus trees become the major plants in plantations through out the world. This Common Eucalypt Longicorn Beetle became the pest in wood plantation industry too. 
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We sometimes found this beetle hiding under loose barks on Eucalyptus in Karawatha Forest.
The beetles lay eggs  in cracks of barks or under barks. Eggs are laid singly or in small batches. The larvae are Eucalyptus wood borers. The life cycles are from two to three years.  
1. Cerambycidae, subfamily Cerambycinae - lifeunseen.com, by Nick Monaghan.
2. A guide to the Genera of Beetles of South Australia Part.7 - Matthews, E.G. & Reid C.A.M.Adelaide, Eureca Corporate Group. 1997,p10, Fig.16, 28.
3. common eucalypt longicorn - PaDIL, Pest and Diseases Image Library, 2006.
4. A Taxonomic Revision of the Australian Genus Phoracantha Newman (Coleoptera : Cerambycidae)
Qiao Wang, Invertebrate Taxonomy 9(5) 865 - 958.
5. The phoracanthine beetles (Coleoptera :Cerambycidae: Cerambycinae): taxonomic overview and generic relationships
Qiao Wang, Invertebrate Taxonomy, 1998, 12, 667684. 
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Last updated: March 10, 2012.