Grey-legged Slender Fly
Orange Slender Fly
Orange-legged Slender Fly
Line-legged Slender Fly
Brown-legged Slender Fly
Black-legged Slender Fly
Wasp-mimic Robber Fly I
Wasp-mimic Robber Fly II
Zebra Robber Fly I
Zebra Robber Fly II 


Yellow-legged Slender Robber Fly - Cerdistus sp.

Family Asilidae

This page contains pictures and information about Yellow-legged Slender Robber Flies that we found in the Brisbane area, Queensland, Australia.

Male, body length 15mm
In general the robber fly is grey and black in colour. All legs are black with tibia in yellow. 
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This Robber Fly is usually found on large smooth bark tree trunk. 
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Above pictures show the robber fly just captured a planthoppers. Robber Flies are air hunter. They also known as an Assassin Fly. They have piercing mouth-parts and strong legs which can catch prey on flight. They are medium to large size flies with large eyes and necked head. They are active predators on flying insects, unselective in prey species. Their mouthparts are the triangular proboscis  which insert into prey and suck the juice. 
1. Asilini - Australian Asilidae - Dr. Robert Lavigne, Honorary Research Associate, South Australian Museum, Adelaide, SA. 
2. Family ASILIDAE Robber Flies - Australian Biological Resources Study, Australian Faunal Directory.
3. A new species of Cerdistus (Insecta: Diptera: Asilidae) from South Australia, Cerdistus judyjanei,  Lavigne, R.J. 2010 - The South Australian Naturalist 84(1): 7-14 [7-12]. 

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Up ] Black-legged Slender Robber Fly ] Yellow Slender Rubber Fly ] [ Yellow-legged Slender Robber Fly ] Black Slender Robber Fly ] Brown Slender Robber Fly ] Red-legged Robber Fly ] Red Rubber Fly ] Large Brown Rubber Fly ] Line-legged Brown Rubber Fly ] Dusted Robber Fly ] Dark Robber Fly ] Common Brown Robber Fly ] Orange Robber Fly ] Line-legged Robber Fly ] Reddish Robber Fly ]


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Last updated: October 21, 2012.