Currently viewing the category: "Bot 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:  Hornet eating strange bug
Geographic location of the bug:  Portland, Oregon
Date: 09/11/2017
Time: 05:27 PM EDT
I was curious what bug is being eaten, I’ve never seen one before.
How you want your letter signed:  Heather lux

Yellow Jacket preys upon Bot Fly

Dear Heather,
The prey in your image is a Rodent Bot Fly, and the predator appears to be a Yellowjacket, a close relative of Hornets.  Adult Yellowjackets prey upon various insects, especially caterpillars, to feed to larvae that are developing in the paper nest they build.

What's That Bug? does not endorse extermination

Subject: Unidentifiable bee?
Location: Southeast Michigan
April 28, 2017 10:30 am
Dear bugman,
I found this bug in my bedroom this morning. Cool looking! What is it?!
Signature: Julie Jones

Rodent Bot Fly

Dear Julie,
Though it is frequently mistaken for a Bee, this is actually a Rodent Bot Fly in the genus
Cuterebra.

What's That Bug? does not endorse extermination

Subject: Bot fly?
Location: Northeast Wisconsin
March 7, 2017 6:44 pm
Thank you in advance for your time.
The other night I woke up with a stinging sensation on the edge of my upper lip. Turn on the light and I see this insect on the back of my hand.
I live in northeast Wisconsin, and this this occurred the first week of March. We had a week over unseasonably warm weather and I had brought some things in from the garage where I believe it hitchhiked in.
Signature: v/r, Luke

Bot Fly

Dear Luke,
We agree that this is a Bot Fly.  To the best of our knowledge, they do not sting nor bite, and we suspect the sensation you felt upon being startled from your sleep relates to the Bot Fly’s legs brushing against your sensitive lips.

What's That Bug? does not endorse extermination

Subject: Bee
Location: Orlando Florida
November 4, 2016 7:07 pm
Ok, so I found this bee by the pool, and I’m extremely curious as too it’s species! I believe it’s of the Apidae family, and its stingless. I have a pretty good picture, I really hope you can tell me what species it is!
Signature: Thank you! Maihaa

Rodent Bot Fly

Rodent Bot Fly

Dear Maihaa,
Though it resembles a Bumble Bee, this is actually a Rodent Bot Fly in the genus
Cuterebra.

Thank you! That’s fascinating! I’ve decided to do more research on it, for some reason I find it quite intriguing. Is there anything more you can tell me about it?
Maihaa

Hi again Maihaa,
The larvae are endoparasites on rodents that do not harm the host, which is hard to believe.  See our Bot Fly archives and BugGuide for additional information.

What's That Bug? does not endorse extermination

Subject: Larvae?
Location: Central MN
August 7, 2016 7:52 am
Hi, Bugman! What on earth is this, apparent, larvae? About an inch and a half long, VERY chubby, no ‘legs’. Looks like Jabba the Hutt! Black spotty body, found in a garage.
Signature: Confused naturalist

Rodent Bot Fly Maggot

Rodent Bot Fly Maggot

Dear Confused Naturalist,
This looks to us like the larva of a Rodent Bot Fly.  See this BugGuide image for comparison.

THANK YOU!!  Yes, I found that on your amazing website…..I refer to it often. Thank you for your quick response. I have never EVER seen this before…and I’ve been on a frenzy trying to figure it out. Now I can sleep…hehehehee! (Total bug nerd)
Kelly

What's That Bug? does not endorse extermination