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

Subject:  Unknown “Picturewing Fly”?
Geographic location of the bug:  Amherst MA, USA
Date: 08/18/2018
Time: 01:39 PM EDT
Your letter to the bugman:  I photographed this fly in 2004 and have never asked anyone to identify it.
How you want your letter signed:  Joseph G. Kunkel

Fruit Fly

Dear Joseph,
This is a Fruit Fly in the family Tephritidae, and based on this BugGuide image, it is in the genus
Eutreta.   According to BugGuide, they are “Gall-formers on Asteraceae” and the habitat is “Coastal Dunes, Woodlands.”

What's That Bug? does not endorse extermination

Subject:  Fruit or deer fly
Geographic location of the bug:  Rochester, new york
Date: 08/10/2018
Time: 09:24 AM EDT
Your letter to the bugman:  Green eyes,chestnut body w gold shield,almost, on back .black lines on transparent wings. Looked a bit like a smallish deer fly or a very large fruit fly.
How you want your letter signed:  Dip-Teran

Walnut Husk Fly

Dear Dip-Teran,
This is a Walnut Husk Fly,
Rhagoletis completa, one of the Fruit Flies in the family Tephritidae, and it is pictured on BugGuide.  According to BugGuide the larval host is:  “Walnut husks primarily. It can attack other plants, such as peaches.”

Thank you!  That explains it!  It’s peach season here!
What's That Bug? does not endorse extermination

Subject:  What is this?
Geographic location of the bug:  Hawaii
Date: 04/15/2018
Time: 03:35 PM EDT
Your letter to the bugman:  Just need to know what this is so we can kill it and keep it out of our yard
How you want your letter signed:  Thanks

Oriental Fruit Fly

Based on images posted to Wikimedia and Nucleus where it states “Host: Most fruits and fruiting vegetables” and “Highly significant economic damage”, we believe this is an Oriental Fruit Fly, Bactrocera dorsalis.  According to Featured Creatures, the Oriental Fruit Fly has been introduced to Hawaii and “The oriental fruit fly, Bactrocera dorsalis (Hendel), is a very destructive pest of fruit in areas where it occurs. It is native to large parts of tropical Asia, has become established over much of sub-Saharan Africa, and is often intercepted in the United States, sometimes triggering eradication programs.” 

What's That Bug? does not endorse extermination

Subject:  What type of fly is this?
Geographic location of the bug:  Los Angeles, California
Date: 09/19/2017
Time: 11:28 PM EDT
Hello, Bugman
Can you tell me what type of fly this is? Luckily it stayed on my hand long enough for me to take a somewhat clear image. I found this near my garden in Los Angeles.
How you want your letter signed:  Nancy

Mediterranean Fruit Fly

Dear Nancy,
Were you in Los Angeles in the 1980s?  This is a Mediterranean Fruit Fly, the dreaded Med Fly that caused so many millions of dollars to be spent on aerial spraying of malathion with helicopters.  We identified your Med Fly thanks to images posted to BugGuide.  According to BugGuide:  “One of the world’s most destructive fruit pests, and the most economically important fruit fly species. Each infestation detected in FL and CA triggered massive eradication and detection effort. In CA, large numbers of sterile males are released and are not uncommon in some places. A female would be a sign of an infestation, and should be reported immediately. Females have a visible ovipositor on the rear tip of the abdomen and lack the ornamented hairs on the male head.”  We do not see an ovipositor and it appears your individual has hairs on the head, so we suspect it is a male.  Though it is not identified as a female, this BugGuide image appears to be of a female.

What's That Bug? does not endorse extermination

Subject: What is this pretty little thing?
Location: Roseville, Michigan, USA
July 4, 2017 9:23 am
Saw 2 of these on my sunflower leaves this morning. It was super tiny, but so pretty. especially it’s wings. Can you tell me what it is possible?
Pam Clarke
Signature: Thanks so much!

Sunflower Maggot Fly

Dear Pam,
We quickly identified your Sunflower Maggot Fly,
Strauzia longipennis, thanks to this BugGuide image.  According to BugGuide:  “While infestation levels have occasionally reached nearly 100%, damage within sunflower stalks from larval feeding usually is light.” 

What's That Bug? does not endorse extermination

Subject: WTB?!
Location: Denver area (larva); east of Phoenix (Thrips & E. acutangulus)
December 12, 2016 10:37 pm
I’m trying to positively identify three insects so their Genus species can be part of the file name which will have the Genus species of the flowering plant, too. (You’ll see.)
I’ll include all three images and note that I’m pretty sure I’ve tracked down the fruit fly name, Euarestoides acutangulus, though if you think otherwise, I’m all ears. Or, at least, eyes.
The (I think sawfly) larva is on a pincushion cactus blossom and might be two inches long? This is mid-May along the southern edge of the Denver area (Highland Ranch).
The Thrips is on a Mexican gold poppy, while the fruit fly is on a desert chicory. Both were shot in mid-March, east of Phoenix at about 2,100 feet elevation.
I appreciate your even taking the time to consider these.
Signature: Mark Bennett

Fruit Fly

Fruit Fly

Dear Mark,
We are more than happy to attempt your identifications, but we do have several requests.  First, please confine any future submissions to a single species, with the only exceptions being closely related species observed at the same time, like two swallowtail butterflies visiting the same blossoms, or if there is a predator/prey relationship documented.  Multiple species not all observed at the same time or place does create problems for us in the archive process.  Also please include higher resolution images that are not cropped too tightly.  We are currently attempting to standardize the images on our site to 800 pixels wide by 550 pixels high at 72 dpi.  All your submitted images are considerably smaller and they are odd shaped crops.  We agree that your Fruit Fly is
Euarestoides acutangulus based on the wing patterns evident in several BugGuide images, but BugGuide has no information on the species, which is reported in Arizona.  It is also pictured on iNaturalist.  According to ResearchGate:  “Information on the life cycle of Euarestoides acutangulus (Thomson), including observations on feeding and reproductive behavior, is presented. The fly is bivoltine in central coastal California, with overwintering occurring as diapausing pupae. Eggs were laid in the staminate florets of the host plant, Ambrosia chamissonis (Lessing) Greene (Compositae), and hatched in 4 days. Larvae fed upon the anthers of unopened florets. The amount of damage caused to a staminate head depended upon the number of larvae reaching maturity and the number of florets within the head. Larvae generally completed development in 23 days. Pupation occurred among the destroyed florets. The pupal period of non-diapausing pupae required 12 days.”  The host plant, according to CalFlora, is ” a dicot, is a perennial herb that is native to California and is also found outside of California, but is confined to western North America.” 

Hello Daniel,
Here are the three images in their uncropped state. Note, these uncropped images are artwork to me, not science. As such, they are entered in competition at a gallery and could, with luck and the favor of the judges, be selected for display. And, with more luck and perseverance, become salable prints. THUS, please observe my copyright restrictions — you may use the images on your web site and archive, for educational purposes, but they can not be reproduced or shared or in any method used for commercial purposes by you, What’s That Bug?, or any other entity without my express permission. If these terms are acceptable, and accepted, then we’re good. If not, then please delete the attached file(s).
Thanks. I do hope these help the organization.
Mark Bennett Photography

Rafinesequia neomexicana blossom Euarestoides acutangulus fruit fly desert-chicory 20130316 10cc

Rafinesequia neomexicana blossom
Euarestoides acutangulus fruit fly
desert-chicory 20130316 10cc

Dear Mark,
Thanks for providing the higher resolution files.  Just so you know, the maximum size file we post is 800 pixels by 550 pixels at 72 dpi, so they will not be suitable for reproduction purposes should anyone download images from our site.  We do respect your wishes.  We occasionally allow images from our site to be used for non-profit, educational purposes, but we always request that the person requesting the use place a comment on the posting.  Since we are including a link to your site with the posting, people can contact you directly.  We will be cropping your high resolution images and moving your copyright information so it is embedded in the image.  Thanks again.

What's That Bug? does not endorse extermination