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

                                               

Zebra Robber Fly I - Chrysopogon pilosifacies  

Family Asilidae

This page contains pictures and information about Zebra Robber Flies that we found in the Brisbane area, Queensland, Australia.
 
Body length 15mm
The Robber Flies have alternating black and white strips on body so we called them Zebra Robber Flies. On the 1st-5th abdomen segments there are the white pollinose spots in posterior corners.  On the 3rd-5th segments there are the central white pollinose spot at anterior margin. All legs are black in colour.
 
DSCN6816.jpg (243817 bytes) DSCN6820.jpg (243779 bytes) DSCN6823.jpg (277264 bytes)
 
The wings are dark brown in colour with small transparent area.  
 
DSCN6814.jpg (231207 bytes) wpe4.jpg (26662 bytes)
 
Notice the tibia with an apical spur; one of the spines at the apex of the ventral side of the fore tibia is enlarged. This is the characteristic of the subfamily Dasypogoninae and Brachyrhopalinae. Those robber fly species used to be recognised as one group by this large spine on the front tibiae. Based on the phylogenetic hypothesis derived by Dikow (2009) this spine has been independently derived at least once in the Australian Brachyrhopalinae. This robber fly species is transferred to the newly erected Brachyrhopalinae
 
DSCN7265.jpg (334319 bytes) DSCN7266.jpg (325861 bytes) DSCN7267.jpg (331739 bytes)
 
This Rubber Fly waits for prey on tree trunk. We found the robber fly resting on large tree trunk a few time. 
 
DSCN7227.jpg (252669 bytes) DSCN7230.jpg (276290 bytes) DSCN7231.jpg (229771 bytes)
 
We saw them a few times in Karawatha Forest during mid summer. 
 
DSC_9863.jpg (258762 bytes) DSC_9862.jpg (298745 bytes) DSC_8496.jpg (318704 bytes)
 

Reference:
1. A taxonomic revision of the tribe Chrysopogonini (Diptera: Asilidae) - Clements, A.N. 1985, Australian Journal of Zoology, Suppl. Ser. No. 109. 93 pp. 
2. A phylogenetic hypothesis for Asilidae based on a total evidence analysis of morphological and DNA sequence data (Insecta: Diptera: Brachycera: Asilidae) - Dikow, T. 2009, Organisms, Diversity & Evolution 9: 165188.  

Back to Top

Up ] Wasp-mimic Robber Fly I ] Wasp-mimic Robber Fly II ] [ Zebra Robber Fly I ] Zebra Robber Fly II ]

                                                

See us in our Home page. Download large pictures in our Wallpaper web page. Give us comments in our Guest Book, or send email to us. A great way to support us is to buy the CD from us.  
Last updated: October 25, 2012.