Currently viewing the category: "Horse Flies and Deer Flies"
What's That Bug? does not endorse extermination

Subject: Weird Bug From Pond
Location: Lake View, AL, 35111
September 9, 2014 11:00 am
Hey Bugman,
I have some strange bug crawling around my pond and sidewalks. They seem to move like worms.
They’re greyish brown and I haven’t been brave enough to pick one up and check it out.
I live in Lake View, AL
Thanks,
Jared
Signature: McCalla Bugster

Horse Fly Larva

Horse Fly Larva

Dear McCalla Bugster,
This looks to us like the immature stage of a fly, possibly a Horse Fly.

What's That Bug? does not endorse extermination

Subject: cicada killer wasp??
Location: Mason, MI
September 6, 2014 8:35 pm
This is the 2nd time I’ve seen this insect–both times I was inside my car. The first time I was driving when my son noticed it on the windshield and it stayed put until my speed reached about 50-55 mph. This one landed on my car when I reached my destination and I hadn’t gotten out yet. So I took a picture so I could try to identify it later. It’s at least 1 inch or bigger and I thought the first one looked like it had striped-like markings of a wasp but this one doesn’t appear to have those as much but it could be the angle of the picture. A friend thought it might be a cicada killer wasp but I wasn’t as convinced.
Signature: Sandra

Horse Fly

Horse Fly

Dear Sandra,
This is a Horse Fly, not a Cicada Killer.

What's That Bug? does not endorse extermination

Subject: strange fly
Location: Chesapeake va
August 7, 2014 4:19 pm
Just curious what kind of fly this is..never seen anything like it. It landed on me and scared me half to death..lol
Signature: Christina

Male Black Horse Fly

Male Black Horse Fly

Dear Christina,
You can tell by the close set eyes that this Black Horse Fly,
Tabanus atratus, is a male.  You can compare your image to this image on BugGuide.  Only female Horse Flies bite and suck blood.  Males take nourishment from fruit.  According to BugGuide:  “Females feed on mammalian blood, while males, which lack mandibles, feed on nectar and plant juices (Long 2001). This species especially prone to attack cattle and other livestock.”

What's That Bug? does not endorse extermination

Subject: Interesting fly
Location: North Kingstown, RI
July 21, 2014 6:47 am
This fly (at least I think it’s a fly) was on my car in North Kingstown, RI on July 20, 2014. I’ve never seen one like this before.
I tried searching google images, but nothing came up that looked like this.
Can you tell me what it is?
Thanks,
Signature: Gary Brownell

Male Horse Fly

Male Horse Fly

Hi Gary,
The close-set eyes indicate that this Horse Fly in the family Tabanidae is a non-biting male.  Biting female Horse Flies have a space between the eyes.  See this Horse Fly eye comparison from our archives.  A dorsal view would make species identification easier.

Thanks. I guess I’ve never looked closely at one of these before. It was the white eyes that caught my attention…
Gary Brownell

We believe the faceted eyes are most likely not pigmented white, but rather reflecting the light from the sky.

Interesting. They didn’t seem to change color as the fly changed position. Unfortunately, I only got pictures from this one angle, so I can’t be sure about all that in hindsight. But it was definitely the white eyes that drew my attention.
Thanks,
Gary Brownell

What's That Bug? does not endorse extermination

Subject: Large black insect – southern Ohio
Location: Southwest Ohio
July 3, 2014 2:04 am
I saw this large, all black insect flying outside our house early yesterday morning. It flew fairly slowly and landed near our garage. It seemed to have almost a “matte” finish . And it was about an inch long. Any idea what it is?
Signature: Adam

Black Horse Fly

Black Horse Fly

Hi Adam,
This is a Black Horse Fly,
Tabanus atratus, and the space between the eyes indicates she is a biting female.

What's That Bug? does not endorse extermination

Subject: Fly ID
Location: Spring Hill, Florida
May 11, 2014 12:22 pm
Took this shot of a fly on my screen porch. Interesting color on the eyes. My guess would be some type of Hoverfly but I’m not sure.
Signature: S. Hunter Spenceley

Horse Fly

Horse Fly

Dear S. Hunter,
Your fly is a Horse Fly, and the spacing between the eyes indicates it is a female.  Only female Horse Flies bite.  The closest match we could find on BugGuide is
Tabanus lineola.

What's That Bug? does not endorse extermination