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

Subject: Unknown Fly
Location: Great Salt Lake, Utah
July 5, 2014 3:22 pm
While on vacation, I stopped at the Great Salt Lake in Utah. On the shores of the lake, there was these flies that were about 1 1/2 inches in length and were large enough to cast a shadow as they were flying. I am somewhat familiar with insects but I haven’t seen any like these before.
Signature: Brandon

Robber Fly

Robber Fly

Dear Brandon,
This is a Robber Fly in the family Asilidae, and we will attempt a more specific identification later today.

What's That Bug? does not endorse extermination

Subject: Ichneumon Wasp?
Location: West Milford, New Jersey
July 3, 2014 6:48 am
I have looked at lots of pictures, but I cant ID this insect. I have seen them in my garden a few times, I feel like it may be a Ichneumon Wasp, but I have been unable to match anything with the dark band/stripe down the middle of the thorax.
Signature: Geoffrey Syme

Mating Robber Flies

Mating Robber Flies

Hi Geoffrey,
These are mating Robber Flies in the family Asilidae.  We will attempt to identify the species.  Based on images posted to BugGuide, this appears to be
Asilus sericeus.

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: Is this a wasp or a bee?
Location: North Carolina
July 1, 2014 5:33 am
What kind of wasp or bee is this?
Signature: Devan Bodie

Flower Fly Carnage

Flower Fly Carnage

Dear Devan,
This is neither a wasp nor a bee.  It is a harmless and beneficial Flower Fly or Hover Fly in the family Syrphidae, a family that contains many species that mimic stinging insects as you can see on BugGuide.  It appears in your image that this Flower Fly was recently squashed, and since they are harmless and beneficial, we are tagging this posting as Unnecessary Carnage.

What's That Bug? does not endorse extermination

Subject: Fly mating with dead fly?
Location: Northeast Florida
June 29, 2014 3:56 pm
I saw this fly (or these flies) today in northeast FL. I thought at first that it was a pair of mating flies and took a few photos. However, it appears that this is a live fly that had been mating with a fly that died, and it was now dragging the dead fly along with it as it walked and flew around. I’ve never seen anything like this before.
Signature: Karen in FL

Flesh Fly matings ends with death of the male!!!

Flesh Fly with dead mate

Dear Karen,
We are positively stunned by your images, which appear to have captured the mating of Flesh Flies in the family Sarcophagidae that ended with the death of one of the partners, from unknown causes.  We can assure you that Flesh Flies do not practice necrophilia, and that for some reason, the individual succumbed while in flagrante delicto, and for yet more unexplained reasons, the sexual bond was not broken after the death.  The red-tipped abdomen is a rather distinctive feature, and upon searching though images on BugGuide, we found at least three genera that have this characteristic:  
SarcophagaOxysarcodexia and Arachnidomyia.  Though they are not necrophiliacs, BugGuide does indicate that:  “Larvae: many species are necrophagous, but some feed in mammalian tissues or parasitize other arthropods (bees, cicadas, termites, grasshoppers/locusts, millipedes), earthworms, or snails(3). Adults feed on various sugar-containing materials such as nectar, sap, fruit juices and honeydew.”  Thanks for providing a very intriguing posting for our site.  Typical Flesh Fly mating should look like this.

Flesh Fly mating ends with death of a partner!!!

Flesh Fly mating ends with death of a partner!!!

Hi Daniel,
I was pretty stunned too when I realized what was going on with that fly! I assumed both flies had been alive when mating began, but I couldn’t imagine what might have killed one partner while leaving the other looking perfectly fine and healthy, except for dragging the dead partner around everywhere it went.
Karen in FL

 

What's That Bug? does not endorse extermination

Subject: What the hell are these
Location: NWA
June 21, 2014 8:53 am
Hey Bugman,
Yesterday morning I came across 5 groups of these slugs (I believe that’s what they are). I live in North West Arkansas. So far I haven’t been able to find anything on web about what these little guys actually are. Most people are telling me that they are tent caterpillars, but I don’t believe that is correct.
Signature: J. Ramey

Fungus Gnat Larvae

Fungus Gnat Larvae

Dear J Ramey,
This is a crawling mass of Fungus Gnat Larvae in the family Sciaridae.  According to the Home, Yard & Garden Newsletter at the University of Illinois:  “Fungus gnat larvae are more likely to be numerous in areas with an overabundance of water from rainfall or irrigation. Over-watering newly laid sod can result in large populations of these larvae eating young roots. Reducing irrigation will cause a reduction in the number of fungus gnat larvae and allow the sod to root.  These larvae are not likely to cause any damage to established turf and can be ignored or washed away with heavy streams of water. As adults, they are known as dark-winged fungus gnats, which are frequently very common in the spring and fall in Illinois, flying as large swarms up to several feet across.”  

What's That Bug? does not endorse extermination