Warble flies? - The Horse Forum
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post #1 of 6 Old 08-21-2009, 12:54 AM Thread Starter
Join Date: Jul 2009
Location: Victoria, BC
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Warble flies?

My horse has a small bump on his back that has been there about 3 days without changing. It is about the size of a small pea, it is rock hard, and he has no reaction when I press on it - in fact, it's right under his saddle area! It's not hot or swollen either, just feels like a little rock under his skin.

My coach suggested it is maybe a warble fly or something that has burrowed under his skin. Anyone have experience with this? I'm on the west coast of Canada, if that helps...I don't know much about what we have for insects around here.

Thanks for any suggestions - I know I will eventually have to call my vet if it doesn't go away but thought I'd try my luck here and see if someone know!
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post #2 of 6 Old 08-24-2009, 11:44 PM Thread Starter
Join Date: Jul 2009
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really, no one knows??
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post #3 of 6 Old 08-25-2009, 12:15 PM
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Location: South Carolina
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I have never heard of "warble" flies - we have flesh flies here in my area. They are greyish with 3 black stripes on the top surface behind the head. They are similar to blow flies - they breed in manure, rotting vegetation and flesh - anyhow, they have been known to deposit larvae into open wounds on animals - that's where they get the name "flesh" flies. Any fly that burroughs under the skin could/would cause a major problem, I think. If I suspected the warble fly, I would definitely call my Vet right away. Best of luck!
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post #4 of 6 Old 08-25-2009, 03:28 PM
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It could be so many things. Thorns from some plants will leave a welt too. He may have rolled on top of something. You could always clip the hair away to get a good look at it, but if its doesn't seem to be hurting your horse. I would just keep some sort of antibiotic cream like Tri-Care on it.
I have never heard of a warble fly either

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post #5 of 6 Old 08-25-2009, 09:22 PM
Join Date: Jan 2008
Location: British Columbia, Canada
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I'm in Langley BC, warble flies are attracted to cattle and deer not so much horses. There not that prevalant on the coast more so up in the Okanagan.

I wouldn't worry about it too much if it's not bothering the horse.
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post #6 of 6 Old 08-25-2009, 09:25 PM
Join Date: Jan 2008
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Here's a site from Ag Canada. Warble flies can be so bad that it will cause cattle to stampede
Warble Fly
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