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

Subject:  Potential Carpenter Bee Robber Fly
Geographic location of the bug:  Austin, Texas 78757
Date: 08/06/2019
Time: 04:05 PM EDT
Your letter to the bugman:  I took pictures of two of these very large black bees/flies this morning. I noticed them when refilling a water saucer in a shady woodland setting. Is this a beneficial creature for my certified wildlife habitat, or should I be worried for wood damage in the area?
How you want your letter signed:  Curious Kat

Belzebul Bee-Eater

Dear Curious Kat,
This is definitely a predatory Robber Fly and not a Bee.  The white “cheeks” and yellow band on the abdomen are good indications this is a Belzebul Bee-Eater,
Mallophora leschenaulti, which is pictured on BugGuide.  According to BugGuide:  “has been reported to attack and kill hummingbirds” but we suspect that is a very rare occurrence.  In our opinion, though they are known to prey on Bees, the Belzebul Bee-Eater would be a beneficial creature in your certified wildlife habitat as it is a native species.

Belzebul Bee-Eater

What's That Bug? does not endorse extermination

Subject:  What this bug name?
Geographic location of the bug:  Cambodia,northern plain
Date: 08/02/2019
Time: 11:23 PM EDT
Your letter to the bugman:  I was in jungle trekking for spotting wildlife and found a bug and took some photos but i could not find the specific name, please help
How you want your letter signed:  Bird and nature lover

Thanks you for response. Would this be possible for Hang Thieve or Robber Flies ? i just thinking.
Best Regards,
Hat

Robber Fly

Good Morning Hat AKA Bird and nature lover,
We are happy you were able to identify the magnificent predator in your gorgeous image as a Robber Fly in the family Asilidae, but we don’t believe it is a Hanging Thief in the genus
Diogmites.  We tried searching images of Robber Flies from Cambodia and other parts of Southeast Asia, and we found this FlickR image, but it is only identified to the family level.  It looks similar to Clephydroneura serrula which is figure 7 in an online pdf about Robber Flies from Vietnam on Onychium.  There is also an article in Vietnamese with an image on Vietnam National Museum of Nature site.

What's That Bug? does not endorse extermination

Subject:  Identify please
Geographic location of the bug:  Northern Illinois
Date: 08/02/2019
Time: 12:48 PM EDT
Your letter to the bugman:  The big in the picture seems to always have its wings in an open position and so far have never seen more then one or tow in a location. Any help be very appreciated!
How you want your letter signed:  T

Picture Winged Fly

Dear T,
This is a Picture Winged Fly,
Delphinia picta, and according to BugGuide:  “Breeds in decaying organic matter, such as compost.”

What's That Bug? does not endorse extermination

Subject:  Bee?
Geographic location of the bug:  Northeast NE.
Date: 07/25/2019
Time: 05:58 PM EDT
Your letter to the bugman:  Hi, I found this “bee” on the leaves of my rose bush while trying to figure out what’s been munching leaves. It’s bright lime green just like the photo, almost half an inch long and has a rather flat shaped abdomen with cool black designs. Not metallic like a sweat bee, if it is indeed a bee, but can’t find any info or pix that match.
Thank you,
Lois
How you want your letter signed:  Lois Colvin

Soldier Fly

Dear Lois,
This is not a Bee.  It is a Soldier Fly and we have identified it as
Hedriodiscus binotatus thanks to images posted on BugGuide.

Thank you! First time I’ve seen one in the 17 yrs since moving to NE.

What's That Bug? does not endorse extermination

Subject:  Some kind of fly?
Geographic location of the bug:  Huntsville, Alabama
Date: 07/27/2019
Time: 04:58 PM EDT
Your letter to the bugman:  We found this bug on our windshield this afternoon. It took quite a ride with us. It did recover and fly away. We’r thought it looked kind of like a big horse fly, about the diameter of a 50 cent coin in length, except for the stripes and pointy abdomen.  Thank you for letting us know what it is!
How you want your letter signed:  Rex and Elizabeth

Red Footed Cannibalfly

Dear Rex and Elizabeth,
This large, predatory Robber Fly is commonly called a Red Footed Cannibalfly, and your request is the first submission we have received this year.  We typically post at least five images of Red Footed Cannibalflies each summer.

What's That Bug? does not endorse extermination

Subject:  What type of fly is this?
Geographic location of the bug:  Brantford, Ontario
Date: 07/26/2019
Time: 11:26 AM EDT
Your letter to the bugman:  Hello Bugman,
I am hoping that you can help me identify this fly. I was leaning toward a type of syrphid fly but could not find a match online. Any help would be greatly appreciated.
Thanks!
How you want your letter signed:  Dan

Signal Fly (left) and Red Milkweed Beetle

Dear Dan,
The image of the Fly with the Red Milkweed Beetle is an easier image for identifying purposes as it clearly shows the wing pattern on this Signal Fly in the genus
Rivellia which we determined thanks to images posted to BugGuide where it states the habitat is “on foliage, feces.”  We tried to determine if there is a relationship between Signal Flies and milkweed, and we located this BugGuide image and this BugGuide image and on The Pathless Wood we found an image and this information:  ” I did come across this interesting fly in my search, however, and later determined it is some sort of Signal Fly, a member of the Genus Rivellia. These flies are often difficult to identify from photographs alone; they are quite small, and identification depends on the presence or absence of tiny hairs called setae on the dorsal thorax, as well as the colour pattern of the wings and legs. They get their name from their patterned wings, which they tend to wave around as if signalling other individuals. I didn’t see this behaviour as this individual rested on an unopened milkweed blossom, so I was immediately taken with the unique pattern of its otherwise clear wings.”   So, for some reason, Signal Flies are attracted to milkweed, but we are not certain why.  Are there soybean fields nearby?  Your individual reminds us quite a bit of the Soybean Nodule Fly, Rivellia quadrifasciata, which is also pictured on BugGuide.

Mating Signal Flies

Hi Daniel,
Thank you for this information. There was a soybean field right next to this patch of milkweed so I think it may be safe to say Rivellia quadrifasciata is a match. I’ve seen other flies exhibit this behaviour of waving their wings around. Now I know where to start when trying to identify them.
Thanks again!
Dan

What's That Bug? does not endorse extermination