Tachinid fly - Subfamily Dexiinae 

Family Tachinidae

This page contains pictures and information about Tachinid Flies Subfamily Dexiinae that we found in the Brisbane area, Queensland, Australia.
 
The Dexiinae mostly are parasitic in larval Coleoptera (beetle). Adults are usually found resting on tree trunk. Usually they have long legs, with face elongated under the eyes.
 

Large Green Parasitic Fly
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Rutilia sp., subfamily Dexiinae, tribe Rutiliini, body length 20mm
Pictures taken in Yugarapul Park and Alexandra Hill, mid summer. This fly larvae parasites on Scarab Beetle larvae. This is the largest Tachinid fly that we saw. Its hairy body was metallic green in colour. They are usually found in forest or semi-forest, resting with heading downwards on tree trunk about a meter from ground. More information and pictures can be found in this page.
 
 
Green Parasitic Fly, Bristle Fly
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Rutilia sp., subfamily Dexiinae, tribe Rutiliini, body length 15mm
In early summer, we saw many of them resting on Iron-bark gum tree trunk in Karawatha Forest Bushtail track. They look similar to the above species but smaller in size, with bright green metallic colour. Please visit this page for more information and pictures.
 
 
Long Tongue Tachinid fly
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Senostoma sp. or Rhynchiodexia sp., subfamily DEXIINAE, body length 10mm 
Pictures taken in Karawatha Forest mid September. The fly was waiting for something on the gum tree trunk. This fly did not care about we came very close to take those photos. Please also visit this page for more details.
 
 
Large Long Legs Tachinid Fly
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? sp., body length 18mm
We sometimes see different species of  large Tachinid flies rest on a tree trunk, with head facing downwards, seem waiting for something. Please check this page for the details.
 
 
Thin Long Legs Tachinid fly
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Senostoma or Trigonospila sp. body length 10mm 
Picture taken near Bulimba Creek in Wishart during mid summer. It was searching for something among the leaves.
 
 
Thin brownish-yellow Tachinid fly
 
? Trichopoda sp.,  body length 8mm
Pictures taken in Sunnybank near Bulimba Creek during mid summer. 
 
 

Reference:
1. Insects of Australia, CSIRO, Division of Entomology, Melbourne University Press, 2nd Edition 1991, p 784.
2. Insects of Australia and New Zealand - R. J. Tillyard, Angus & Robertson, Ltd, Sydney, 1926, p376.

 
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Last updated: February 16, 2008.