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

Subject:  Should I be worried?
Geographic location of the bug:  Eugene, OR
Date: 12/01/2017
Time: 04:02 AM EDT
I found three of these really gross larva inside my house this week, November 2017. Based on internet searches, I think this may be a bot fly larva. We have cats which like to bring us “mice” presents which are not always dead. These larva were found in the room where I had caught the mouse the day before. If you kill the mouse would the larva try to leave the body or should I be looking closely on the cats assuming this a bot fly larva?
How you want your letter signed:  Grossed-Out Becky

Immature Bot Fly

Dear Grossed-Out Becky,
We concur that this is an immature Bot Fly.  Rodents are typical hosts, but we believe we have read that rarely a domesticated pet may also act as a host

Thank you for your quick response.  I’m checking my cats just in case.

What's That Bug? does not endorse extermination

Subject:  What is this? A horsefly? A bee? Or a hybrid maybe?
Geographic location of the bug:  Huntsville, Texas
Date: 11/24/2017
Time: 05:30 PM EDT
Hi. I found this at Sam Houston State University to be more specific. I’m not sure if it’s a bee or a fly, or even a new species. I’m in Forensics and our class needs to catch 20 bugs so that’s why it’s in two ziploc baggies. I was afraid it might bite or sting me through one bag. It looks sort of mean. While I don’t need to know, it would be cool if I knew what it is.
How you want your letter signed:  Thank you, Sadie

Tachinid Fly

Dear Sadie,
Normally we do not feel compelled to provide identifications for class projects, but something about your request resonated with us.  This is a parasitoid Tachinid Fly in the family Tachinidae, and this is a very large family with many similar looking species.  We believe based on images posted to the Flies of Goodwell and Texhoma, Texas Co. OK site that it is in the tribe Blondeliini.  BugGuide has four pages of genera in that tribe, so a more specific identification might require an expert in the family.

What's That Bug? does not endorse extermination

Subject:  Bee Fly?  Laphria thoracica?
Geographic location of the bug:  Carlsbad, NM
Date: 11/16/2017
Time: 10:40 PM EDT
This guy (or gal) was hanging out on our screen door in early August of this year.  He didn’t seem to mind when we went in or out, and he didn’t mind being photographed.  Eventually, he flew away.  He looked like a bee crossed with a big fly.  We don’t recall seeing such a colorful one before.  We searched your site and a few others on the internet.  We think he looks like some of the Laphria Thoracica on Bug Guide but not exactly.  We were hoping you might know.  Thanks for all the time and hard work you put into your site.
How you want your letter signed:  Curious

Bee Killer

Dear Curious,
This is a Robber Fly, not a Bee Fly, and you do not have the genus correct.  It is NOT
Laphria thoracica, as that species has a yellow thorax based on BugGuide images, and your individual has a black thorax.  In our opinion, this is a member of a different genus of Robber Flies.  We believe it is a Bee Killer, Mallophora fautrix, a species pictured on BugGuide can be distinguished from the previous genus and described on BugGuide as “Large, fuzzy, bee-mimicking robber flies. Resemble Laphria, another genus of robbers that mimic bumblebees, but is even hairier and has antennae with a very thin terminal final segment, whereas Laphria has thick antennae.”

What's That Bug? does not endorse extermination

Subject:  What’s this bug/worm in standing water?
Geographic location of the bug:  Northern CA – Mendocino Coast
Date: 11/11/2017
Time: 04:59 PM EDT
I’ve been seeing a lot of these worm bugs floating/swimming in the standing water on top of my composter.  They are alive and move around slowly in the water.  They’re almost an inch long and kind of skinny if you see them sideways (2nd photo).  Can you tell me what this is?
Thanks so much!
How you want your letter signed:  Laurie York

Black Soldier Fly Pupa

Dear Laurie,
This is a Black Soldier Fly Pupa, and their presence in your compost pile is a sign that it is healthy.  According to Daily Dump:  “The Black Soldier Fly Maggots are prolific creatures that appear in all compost heaps – they are nature’s scavengers and good for composting. They love a very wet pile. …  If it’s too much and you want to avoid them coming out and crawling on your floor, you can put your composter in a plastic tub with high sides. They usually cannot crawl out of that slippery vertical surface. If they crawl out and wander all over, then sweep them up, collect them in a container and drop them under a tree – birds love them!  Remember that these BSF maggots suppress the lifecycle of the pest carrying housefly. The Soldier flies have no mouth and cannot transmit pathogens, so they are harmless. Appreciate them. They are even a fried delicacy in some cultures as they are very rich in protein!” 

Black Soldier Fly Pupa

Hi Daniel,
Thanks so much for writing me with this info about the Black Soldier Fly Pupa.  Now when I see them I’ll not be frightened and know that they are beneficial in my compost pile.
I appreciate the helpful info you sent me.
Be well,

What's That Bug? does not endorse extermination

Subject:  Moth id
Geographic location of the bug:  Monkton MD
Date: 11/10/2017
Time: 11:35 AM EDT
I think this is a moth? It was found in early November on Hillside Sheffield Pink Chrysanthemum (although not native, it is a wonderful pollinator plant).
How you want your letter signed:  Sue Myers

Orange Collared Scape Moth

Dear Sue,
This is an Orange-Collared Scape Moth,
Cisseps fulvicollis, and according to BugGuide:  “Adults fly from May to October or first hard frost.” As an aside, there is also Flower Fly in the upper left corner of your image.  As a further aside, we were amused that in renaming your image for our archives, we discovered another Scape Moth submitted by a woman named Sue already existed in our archives.

Thank you so much! Wonderful information!
Sue Myers
Environmental Educator
Ladew Topiary Gardens

What's That Bug? does not endorse extermination

Subject:  what’s this bug?
Geographic location of the bug:  Houston, Texas.
Date: 11/08/2017
Time: 10:53 AM EDT
They love flower juice.
How you want your letter signed:  Tan Doan

Flower Flies

Dear Tan,
These are Flower Flies or Hover Flies in the family Syrphidae.  Many members of the family mimic bees and wasps to help deter predators.  Adults are beneficial pollinators and larvae eat Aphids and other small detrimental insects found on plants.

What's That Bug? does not endorse extermination