Brown Phasiin Fly
Long Tongue Dexiin Fly I  
Golden-blue Tachinid Fly
Golden-brown Tachinid Fly 
Thin Long Legs Fly
Metallic Green Hairy Fly
Golden Tachinid Fly I
Golden Tachinid Fly II
Grey Tachinid Fly I
Blue Hairy Tachinid Fly
Black Hairy Tachinid Fly
Hairy-eyed Grey Tachinid
Processionary Cat. Para.
Grey Tachinid Fly II
Grey Tachinid Fly III
Grey Tachinid Fly IV
Grey Hairy Tachinid Fly
S. Grey Hairy Tachinid Fly
Grey Tachinid Fly V
Grey Tachinid Fly VI


Black and White Giant Fly - Formosia (Euamphibolia) speciosa

Family Tachinidae

This page contains pictures and information about Black and White Giant Flies that we found in the Brisbane area, Queensland, Australia.
Body length 20mm 
Black and White Giant Fly is a very large size attractive fly with metallic black and white colours. The head is golden orange. The abdomen has stout spiniform setae at all directions. Abdomen segment 5 is short and broad, with well formed median depression and prominent posterior corners. All legs are orange in colour
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We found this Black and White Giant Fly once on Nov 2012 in Karawatha Forest on Rocky Track. We knew this fly from reference information long time ago. We knew this is the very large handsome fly and they can be seen in Brisbane. We had no luck on seeing them until yesterday (Nov 2012). In the Karawatha Forest we noticed a newly fallen large gum tree trunk. We expected to find something interesting near the base of the tree trunk. To our surprise, we saw a very large fly hovering and checking the mud wall attached to the fallen tree trunk. We were very happy to find that it is the Black and White Giant Fly. 
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Black and White Giant Fly flies with a medium loud buzzing sound. The fly was hovering forwards and backwards. Every time it came forwards, it hit the mud wall with quite a loud sound. It repeated doing this a few times then have a few seconds short rest, then repeated the actions again. We believed the fly was checking if there were any soil dwelling Scarabaeidae larvae under the soil. 
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All Tachinid Flies share the parasitoid habit. Their larvae are internal parasites of many orders and families of insects. The Fly in tribe Rutiliini mostly are parasitic in larval Coleoptera (beetle) especially Scarabaeidae. The reference information suggested that the Black and White Giant Fly may parasite on the larvae of beetles in Cetoniinae
For the general information about Tachinid fly in tribe Rutiliini, please check this page
1. A revisionary classification of the Rutiliini (Diptera: Tachinidae), : with keys to the described species - R. W. Crosskey, British Museum (Natural History), Bulletin, Entomology, Supplement 19, 1973. 
2. A conspectus of the Tachinidae (Diptera) of Australia, including keys to the supraspecific taxa and taxonomic and host catalogues - R. W. Crosskey, British Museum (Natural History), Bulletin, Entomology, Supplement 21, 1973.
3. Species Formosia (Euamphibolia) speciosa (Erichson, 1842) - Australian Biological Resources Study, Australian Faunal Directory.
4. Insects of Australia, CSIRO, Division of Entomology, Melbourne University Press, 2nd Edition 1991, p 784, plate 5O.
5. Insects of Australia and New Zealand - R. J. Tillyard, Angus & Robertson, Ltd, Sydney, 1926, p376, plate 25.27 (Euamphibolia fulvipes). 

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Up ] [ Black and White Rutilia Fly ] Blue Rutilia Fly ] Golden Head Rutilia Fly I ] Golden Head Rutilia Fly II ] Golden Head Rutilia Fly III ] Green Rutilia Fly I ] Green Rutilia Fly II ] Green Rutilia Fly III ] Grey Rutilia Fly I ] Grey Rutilia Fly II ] Grey Rutilia Fly III ] Grey Rutilia Fly IV ] Brown Rutilia Fly ]



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Last updated: November 25, 2012.