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


Acacia Longicorn Beetle II - Penthea pardalis


This page contains pictures and information about Acacia Longicorn Beetles that we found in the Brisbane area, Queensland, Australia.
Body length female 30mm
On Dec 2005, we found a Acacia Longicorn Beetle in Karawatha Forest. It was feeding on a small Acacia tree. It was biting off the skin of some young stems. We found only one beetle in the near by area.
wpe1D.jpg (29614 bytes) wpe1F.jpg (32623 bytes) wpe13.jpg (21311 bytes)
The beetle was very slow moving. When disturbed, the beetle played dead.
wpe15.jpg (23578 bytes) DSCN0664.jpg (207670 bytes) DSC_6858.jpg (229430 bytes)
DSCN0647.jpg (220936 bytes) DSCN0648.jpg (262240 bytes) DSCN0653.jpg (196760 bytes)
DSC_6860.jpg (261412 bytes) DSC_6859.jpg (256098 bytes) DSC_6857.jpg (214098 bytes)
On Feb 2012, we found another one on a young Acacia on Venman Circuit.  

Mimicking larger animal's face

wpe19.jpg (42520 bytes) wpe21.jpg (42401 bytes)  
When looking at the beetle with the front view, we noticed why there are the round dome on each shoulder. Those domes mimic the eyes of a larger animal. The beetle spends long time on stem feeding plant skin. It will most likely encounter its predators, such as a bird, from above. The mimicking larger animal's face may scare away its predators. We have more information about face mimicking in this page.
1. Cerambycidae, subfamily Lamiinae - lifeunseen.com, by Nick Monaghan.
2. Specimen Image Index - Insect Reference Collection Database - ICDB, Western Australian Department of Agriculture.
3. A guide to the Genera of Beetles of South Australia Part.7 - Matthews, E.G. & Reid C.A.M.Adelaide, Eureca Corporate Group. 1997., p53, fig86.
4. A field guide to insects in Australia - By Paul Zborowski and Ross Storey, Reed New Holland, 1996, p124. 

Back to Top

Up ] She-Oak Longicorn ] Tea-tree Longicorn ] Dark Brown Longicorn ] Green Longicorn ] Acacia LongicornI I ] [ Acacia Longicorn Beetle II ]


See us in our Home page. Download large pictures in our Wallpaper web page. Give us comments in our Guest Book, or send email to us. A great way to support us is to buy the CD from us.  
Last updated: March 10, 2012.