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Treehopper Mimicking Fly - Cephaloconus tenebrosus

Family Lauxaniidae

This page contains pictures and information about Treehopper Mimicking Flies that we found in the Brisbane area, Queensland, Australia.
 
Body length 8mm
 
Pictures were taken at Macgregor bushland during mid summer. This fly looks like a Treehopper. It is hard to understand what is the advantage of mimicking a Treehopper. Then we learnt that some insects mimic others because of their fast speed of escape. The predators do not border to hunting them because the predators expected they are too fast to capture. This could be the reason of the fly mimic the treehopper.
 
wpe1.jpg (25209 bytes)  wpe4.jpg (19800 bytes)
 
We sometimes find them in our backyard during mid summer. The fly was usually found resting on large green leaves.
 
DSC_2467.jpg (82145 bytes)  DSC_2473.jpg (71214 bytes)
 

Reference:
1. Flies - family Lauxaniidae - lifeunseen.com, by Nick Monaghan
2. Diptera.info Forum - ID by Dr. Stephen D. Gaimari, California State Collection of Arthropods, Plant Pest Diagnostics Lab.

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Last updated: February 07, 2008.