Yellow Slender Robber Fly - Cerdistus sp.

Family Asilidae

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

Body length 15mm, female

 

This robber fly is yellowish-grey in colour, wings tinted with reddish brown. Legs are black with yellowish-brown. Its antennae are slender style.

 

Male

 

Female 

 

The above picture shows the robber fly feeding on its prey, a winged ant. Robber Flies are air hunter. 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. 

 

 

 

This robber fly is medium in size, usually found resting on tips of stems.  

 

 

 

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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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Last updated: October 21, 2012.