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Photo#354493
Chrysops discalis? - Zelus tetracanthus

Chrysops discalis? - Zelus tetracanthus
Antelope Island, Davis County, Utah, USA
August 23, 2009
I'm only submitting this picture because I'm thrilled there is something preying on deer flies. I really liked this scenario! Will frass since it's not the same fly.

Images of this individual: tag all
Chrysops discalis? - Chrysops discalis - male Chrysops discalis? - Zelus tetracanthus

Moved
Moved from ID Request.

What a treat...
to see two of my favorite families together in one shot! The predator is an assassin bug, Zelus tetracanthus. And yes, I think the prey is C. discalis though I'm not 100% with the males. I think the maculated appearance of the wings is unique to the species.

If this isn't the same fly as the linked photo, I'd unlink them and put this one under Z. tetracanthus to illustrate another predator/prey interaction since it is much more common for these harpactorines to prey on slower-moving beetles and bugs.

 
Thanks!
Thanks for the information and I will move this photo to Zelus.

 
LOL!
Yeah, now if we could only train Zelus to sit on top of our heads all day...:-)

 
I agree..
A Zelus on one shoulder and a Robber Fly on the other.

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