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

Subject: what’s this
Location: Denver, Colorado
July 21, 2012 9:40 pm
I can’t identity this bug. Photos were taken in July, 2012 in Denver, Colorado. I’ve seen several of these tiny bugs on the leaves of our sunflowers.
Signature: Mark Silverstein

What’s That Fruit Fly???

Hi Mark,
This is some species of Fruit Fly in the family Tephritidae, but we have not had any luck with a conclusive identification on Bugguide.  It does not resemble the images of the Sunflower Maggot Fruit Fly posted to BugGuide, though that would seem to be an obvious choice based on the location where they were found.

thanks for the prompt reply, and for narrowing my search down to the Tephritidae.

Unidentified Fruit Fly

Please let us know if you find an identification.

What's That Bug? does not endorse extermination

Subject: Orange Eyes!
Location: Andover, NJ, backyard
July 18, 2012 1:47 pm
Okay, here’s one for you … I found this yellow fly on one of my sunflowers today. It is quite small, so had to crop the heck out of these pictures. One gives you a good look at the body, which looks fly-like to me; while the other gives you some detail on the wings, which are gorgeous. Hope you can id this little thing for me…
Signature: Deborah Bifulco

Fruit Fly: Strauzia species

Hi Deborah,
We believe we have correctly identified (much quicker than we would have expected) your Fruit Fly as a member of the genus Strauzia based on these BugGuide photos where it is stated:  “Larvae bore in stems of Asteraceae, including sunflowers”

Thanks, Daniel!  Interestingly, I found an assassin bug nymph (thanks to an ID by you last year) on the same sunflower, so it is possible that the fruit fly will become a meal at some point.  Hopefully, I can get some better pictures of the fruit fly before nature runs its course…

What's That Bug? does not endorse extermination

June 25, 2012
Location:  Mt Washington, Los Angeles, CA
We are indulging ourselves because we took some photos of insects while gardening over the weekend and on Monday, and though we have numerous letters provided by readers needing identifications, we decided to post some of our own sightings.

Mating Walnut Husk Flies

These Fruit Flies were putting on quite a show on the unripe peaches, and we suspected they might be up to no good.  The three individuals in this series of photos were getting busy and they seemed oblivious to the camera.  It appears that two males are vying for the females attention, and they formed quite a huddle for several minutes until their frenzied activity caused them to fall to the ground.  There were at least five individuals in the immediate vicinity of the six or so peaches on our very young tree, but the main mating activity was confined to the three individuals in the photos.  Upon doing the research today, we learned that these are Walnut Husk Flies, Rhagoletis completa, a species native to the eastern parts of North America that has become established in California.  According to BugGuide, they feed upon:  “Walnut husks primarily. It can attack other plants, such as peaches” and it “Damages walnuts, serious pest of walnut orchards.”  In Mt Washington, one of our local endangered treasures is the California Black Walnut, Juglans californica, which is endangered due to habitat loss caused by development in the hillsides as well as a new threat, the 1000 Cankers Disease.  We can’t help but to wonder if the Walnut Husk Fly might pose a new threat to the survival of the California Black Walnut.  We are postdating this entry to go live during the few days we will be out of the office.

Mating Walnut Husk Flies

What's That Bug? does not endorse extermination

Possible fly from Tanzania?
Location: Simanjiro, Tanzania
March 2, 2012 4:11 am
This is a little beastie that landed on me a couple of weeks ago here in the Tanzanian savanna. I realise it’s a long-shot asking for an indeitification, but I’m hoping someone can at least help with a family! It looks rather like a hoverfly type, but has an impressive ovipositor. Maybe it really is some sort of wasp? It’s pretty small – that’s my wrist it’s sitting on. Any help welcome! Thanks!
Signature: Colin

Fruit Fly

Dear Colin,
This is some species of Fruit Fly in the family Tephritidae, but we are uncertain of the species.

Thank’s very much! That’s good enough for me. Now I need to work out why…

Hi again Colin,
We are not certain about your pondering “why”.  If you are wondering why it landed on your arm, we suppose it was just to rest.  Flies often alight on handy surfaces that have no bearing of food source.  By the way, that is an ovipositor.

No, not why it was there, but why that group as opposed to all other fly / wasp options! The taxonomy puzzles me…

We can’t say anything more convincing than that they look like other members of the family.

What's That Bug? does not endorse extermination

could not identify this fly
Location: riyadh, saudi arabia
January 24, 2012 10:39 am
i have searched the internet and asked some people but still know nothing about it,the fly interested me with its unusual wings there are picture of an insect on them. so i caught it around afternoon under a clear sky in a cold day where the temperature was 14-9 c not far from my orange tree in my home Riyadh, Saudi Arabia. thank you for this chance and any idea will be grateful.
Signature: by keyobo

Unknown Fruit Fly

Dear keyobo,
While we don’t have an actual identification, we do have an idea.  In our opinion, this is a Fruit Fly in the family Tephritidae.  We will link to the BugGuide page of North American species for comparison.  We haven’t had any luck identifying any Egyptian possibilities.  Many Fruit Flies are important agricultural pests, especially if they are introduced from exotic locations. 

What's That Bug? does not endorse extermination

Fruit fly
Location: Pirituba, São Paulo, Brazil
January 6, 2012 5:27 pm
Hi, it’s me again.
As I noticed that the only photo you have of Euaresta flies is a blurry one, I’m sending this photos.
It really looks like Euaresta festiva, but I observed that the wing patterns does not match 100% and I don’t think the plant where I find them is an Ambrosia trifida. I don’t see a closer species on internet.
This canadian site is a great source to identify Tephritidae.
Signature: Cesar Crash

Fruit Fly

Hi Cesar,
Thank you for sending these images of a Brazilian Fruit Fly.  We agree that your fly does resemble
Euaresta festiva as pictured on BugGuide, but the range seems to be more northern, so we doubt it is a correct species match, however, it is possibly closely related.

Fruit Fly

It seems that I forgot the link. Here it is:

This is another one:

Sorry for the english mistakes.

Fruit Fly from Brazil

Thanks for the links Cesar.  Your English is fine.  It is much better than our Portuguese. 


What's That Bug? does not endorse extermination