The tiger bee fly is a fascinating insect that you might have encountered while spending time outdoors. This intriguing creature is known for its unique appearance and distinctive wing markings.
It is one of about 800 species of bee flies in North America and has a noteworthy impact on carpenter bees.
As a parasitic species, the female tiger bee fly is on the hunt for carpenter bee nests.
Once she locates a nest, she deposits her eggs where carpenter bees have laid theirs. In this exceptional relationship, the tiger bee fly larvae feed on the carpenter bee larvae, playing a role in controlling their populations.
Understanding the role and life cycle of the tiger bee fly can provide insights into the complex world of insect interactions.
As you learn more about this captivating species, you’ll gain a broader perspective on the balance of nature and the importance of these small, yet significant inhabitants of our ecosystem.
Understanding the Tiger Bee Fly
Classification
The tiger bee fly is an insect belonging to the order Diptera. It is a member of the family Bombyliidae, which comprises about 800 species of bee flies in North America1.
Scientific Name
The scientific name for the tiger bee fly is Xenox tigrinus2.
Size and Appearance
The tiger bee fly is a large fly with a distinctive appearance. Some of its key features include:
- A large abdomen
- A black body
- Transparent wings with white spots and patterns resembling tiger stripes
This combination of size and coloration makes the tiger bee fly easy to recognize.
Coloration
The tiger bee fly’s unique appearance comes from its black body and transparent wings that have white spots and patterns resembling tiger stripes.
These bold markings help to set it apart from other flies and insects, making it easier to identify3.
Remember that your friendly neighborhood tiger bee fly is not a true bee, but rather an impressive mimic.
Keep an eye out for its unique appearance when exploring your surroundings and have fun learning more about these fascinating creatures.
Behavior and Lifestyle
Feeding Habits
The tiger bee fly typically feeds on nectar from flowers. They have a long proboscis, which helps them to suck nectar from various flowers.
Their consumption of nectar is essential for their energy while flying. Just like bees, they also act as pollinators for flowers.
In contrast, tiger bee fly larvae have a different feeding habit. They are parasitoids, meaning they kill their host to obtain nourishment.
They specifically target carpenter bee larvae as their main food source.
The female tiger bee fly lays her eggs near carpenter bee entrance holes, and the resulting larvae crawl into the tunnels to feed on the pollen balls intended for the carpenter bee’s offspring.
Breeding and Lifecycle
Tiger bee flies have a unique breeding process. Once fertilized, the female tiger bee fly finds carpenter bee nests and deposits her eggs nearby.
This helps to ensure that the larvae have immediate access to their food source, the carpenter bee larvae.
The larvae go through a few stages of growth before pupating.
After some time, adult tiger bee flies emerge, ready to find their own food, mate, and continue the cycle. The entire lifecycle occurs within the range of typical North American seasons.
Habitat
Tiger bee flies are commonly found across North America, spanning from Canada to Mexico, including places like Missouri.
They mainly inhabit areas where carpenter bees are present, as their larvae rely on carpenter bee larvae for survival.
You can often spot tiger bee flies hovering around wooden surfaces such as privacy fences or roof overhangs, where carpenter bees might lay their eggs.
As they are pollinators, you’ll also find them near flowers and gardens while searching for nectar.
Tiger Bee Fly and Carpenter Bees
Parasitic Relationship
The Tiger Bee Fly is known for its parasitic relationship with carpenter bees, specifically the Eastern Carpenter Bee (Xylocopa virginica). This is how it works:
- Female tiger bee flies lay their eggs near carpenter bee entrance holes.
- The resulting larvae (maggots) crawl into the carpenter bee’s tunnels.
- They feed on the pollen balls intended for the carpenter bee’s larvae.
This parasitic behavior is a threat to the carpenter bees in the Apidae family.
Impact on Carpenter Bees
Carpenter bees are important pollinators. However, when faced with the tiger bee fly’s parasitic relationship, they can experience some negative consequences:
- Reduced carpenter bee populations.
- Damage to the carpenter bee tunnels.
- Decreased pollination efficiency.
Despite these challenges, both carpenter bees and tiger bee flies play an essential role in the ecosystem.
It’s important to consider human activities that might disrupt the delicate balance between these insects, such as pesticide use and habitat loss.
Importance in Ecosystem
Role as Pollinators
Tiger bee flies play a crucial part in the ecosystem as pollinators. Although they are not as efficient as typical pollinators such as bees or butterflies, they still contribute to plant fertilization.
As adults, tiger bee flies feed on nectar from flowers. While doing this, they unintentionally transfer pollen from one flower to another.
This process helps plants reproduce, resulting in better flora and plant diversity.
Interactions with Other Insects
Tiger bee flies have a complex relationship with carpenter bees. They are parasites of carpenter bee larvae, meaning the fly larvae consume and ultimately kill their hosts.
Female tiger bee flies lay eggs close to carpenter bee tunnels. When their larvae hatch, they feed on carpenter bee offspring’s pollen balls before consuming the larvae themselves.
Tiger bee flies may also assist in controlling insect populations, as they target pests such as mosquitoes or other arthropods. As natural predators, they can help maintain balance in insect ecosystems.
While some insects might be negatively affected by the feeding habits of tiger bee fly larvae, the adult flies also contribute positively to the ecosystem by serving as pollinators.
Their interactions with other insects illustrate the complexity and delicate balance within the world of arthropods.
Identifying Tiger Bee Flies
Tiger bee flies are quite distinctive, making identification relatively easy. They are part of a large family of true flies, Bombyliidae, which contains about 800 species in North America.
Here are some key features to help you recognize a tiger bee fly:
- Wing markings: Tiger bee flies have a unique pattern on their wings, making them stand out from other species.
- Size and appearance: These flies resemble pudgy, fuzzy bees, and some even look like strangely fuzzy mosquitoes with a long proboscis.
- Behavior: These flies are known to hover around wooden privacy fences, wooden roof overhangs, and similar wooden surfaces where carpenter bees lay their eggs.
To better understand the differences between tiger bee flies and bees, consider the following comparison table:
| Feature | Tiger Bee Fly | Bee |
|---|---|---|
| Appearance | Fuzzy, pudgy body | More streamlined body shape |
| Wing pattern | Distinctive markings | Clear, plain wings |
| Proboscis | Present in some species to suck nectar | Bees have a tongue for collecting nectar |
| Behavior | Hovering near wooden surfaces | Foraging on flowers for nectar and pollen |
Remember, while tiger bee flies may be interesting to look at, they are not harmless. They parasitize carpenter bee larvae by laying eggs near carpenter bee entrance holes, so keep an eye out if you have carpenter bees around your property.
Historical and Cultural Significance
The Tiger Bee Fly (Xenox tigrinus) has been around for many years, even dating back to 1776.
It is commonly found in various locations like Alabama, Wisconsin, and other states in the United States. This interesting insect holds cultural significance for some due to its unique behavior and appearance.
The unique behaviors and physical characteristics of the Tiger Bee Fly have made it a fascinating subject for research and study.
For example, Carl De Geer, a Swedish naturalist, studied and documented various aspects of insect life, including the Tiger Bee Fly, in his scientific works.
Tiger Bee Flies are also popular subjects on websites like BugGuide, where entomologists and insect enthusiasts share information and discuss the many fascinating aspects of these creatures.
Interesting Facts
The Tiger Bee Fly (Xenox tigrinus) is a unique and intriguing insect. It belongs to the Bombyliidae family, which is commonly called “bee flies” due to their striking resemblance to bees1.
Interestingly, the “tigrinus” part of its name comes from the intricate black markings present on the fly’s wings1.
The Tiger Bee Fly has a rather menacing side as well. It is known to parasitize the larvae of carpenter bees2.
In fact, the female Tiger Bee Fly specifically targets and deposits her eggs near carpenter bee larvae. Once hatched, the fly’s maggot-like offspring consume the carpenter bee larvae in a vampire-like fashion2.
Here are some key features of the Tiger Bee Fly:
- Resembles bees in appearance1
- Intricate black markings on wings1
- Parasitizes carpenter bee larvae2
- Maggot-like offspring feed on carpenter bee larvae2
While the Tiger Bee Fly might seem intimidating, it’s important to remember that it plays a role in the larger ecosystem.
The next time you spot one near your wooden fence or roof overhang, take a moment to appreciate this fascinating insect and its intriguing habits.
Conclusion
In summary, the tiger bee fly, Xenox tigrinus, is a remarkable insect with a unique role in the ecosystem.
As a pollinator and a parasitic predator of carpenter bee larvae, it contributes to both plant reproduction and the control of carpenter bee populations.
Its distinctive appearance, with transparent wings marked like a tiger’s stripes, makes it an intriguing subject for observation and study.
Understanding the tiger bee fly’s lifecycle and behavior enhances our appreciation of the complex interactions within nature.
Footnotes
49 Comments. Leave new
bee fly, name for the small- to medium-sized flies of the family Bombyliidae, many of which resemble bees in appearance and behavior. This mimicry provides bee flies with some measure of protection against predators that have learned to avoid the sting of true bees. A bee fly has a stout, hairy body and long proboscis. In many species the body and wings are strikingly marked in yellow and brown. Most are very swift fliers and buzz loudly like a bee if caught in a net. They seek heat and are often found flying close to the ground in dry, sandy regions. The adults feed on nectar and hover above flowers like bees. The larvae feed on larvae or pupae of other insects; they are beneficial as parasites of harmful species. Beelike flies are also found in other families. The syrphid flies (family Syrphidae), also called hover flies and flower flies, are a large, cosmopolitan group of beelike and wasplike flies. Many syrphid flies bear a very close resemblance to a particular bee or wasp species. Many of the robber flies (family Asilidae) resemble bumblebees. All of these are true flies; they are classified in the phylum Arthropoda, class Insecta, order Diptera.
Thank you for the concise and thorough explanation.
Saw one of these for the first time yesterday in Toronto, Canada. They were happily sitting on the wall of my balcony. They freaked me out, due to their size, but coming here and learning who they are took away my fear completely. I have hundreds of carpenter bees around and that is why they have shown up. Hopefully they will come back because I would really love to get a photo of them.
Thank you once again for the invaluable information you provide at What’s That Bug.
Saw one of these for the first time yesterday in Toronto, Canada. They were happily sitting on the wall of my balcony. They freaked me out, due to their size, but coming here and learning who they are took away my fear completely. I have hundreds of carpenter bees around and that is why they have shown up. Hopefully they will come back because I would really love to get a photo of them.
Thank you once again for the invaluable information you provide at What’s That Bug.
These just showed up this week in the front of my house and they are chasing the hummingbirds away, not allowing them to get to the feeders. Have you ever heard of them doing this before? We had carpenter ants a couple of years ago. The tree that they came from is gone thanks to Superstorm Sandy. I wonder what’s bringing the Tiger Bee flies?
That does not sound like the behavior of a Tiger Bee Fly. Please submit an image using our Ask What’s That Bug? link.
I forgot to mention that I’m in Princeton, NJ.
I’m trying to send pictures but I keep getting a Failed message. I’m using Google Chrome. Is that the problem?
Try sending a comment without an image, but include all the information requested on the standard form, including location. Put Tiger Bee Fly in the title. We will respond with an email and you can try attaching the image to our response.
http://www.whatsthatbug.com/comments-and-questions/
Drexel Hill, PA
I have seen these around my house for the past 2 summers and was wondering if they were a bee or a fly. Now I know. Last summer we watched 2 of the new grown ones birth from the carpenter bee holes in our deck railing. Our puppy is enjoying chasing them around the yard. Do they bite or sting?
Tiger Bee Flies do not bite nor sting. They do parasitize the nests of Carpenter Bees as your observation indicates.
Drexel Hill, PA
I have seen these around my house for the past 2 summers and was wondering if they were a bee or a fly. Now I know. Last summer we watched 2 of the new grown ones birth from the carpenter bee holes in our deck railing. Our puppy is enjoying chasing them around the yard. Do they bite or sting?
Wow! I just saw one of these on my screen door last night and didn’t know what it was. I thought it was a moth at first, but something wasn’t quit right. Now I know. Thanks
Eating during mating…. Nice. Lol
I leave in Philadelphia , Pa. and I have these bees on my back yard for the first time I have never seen them before they just appeared on my deck. Should I be worried and what should I do about them I have small kids and I am worried .
Thank you
Worried mom!
They are perfectly harmless as they do not sting nor bite.
I leave in Philadelphia , Pa. and I have these bees on my back yard for the first time I have never seen them before they just appeared on my deck. Should I be worried and what should I do about them I have small kids and I am worried .
Thank you
Worried mom!
Found one of these in indianapolis IN too, so they aren’t subjective to Florida.
Based on the range map on BugGuide, Tiger Bee Flies are found throughout eastern North America.
I have a couple of these near my house. It looks like one is coming out of the railing on my deck (back end is sticking out). Do they chew on wood? How do they hatch?
They are parasites of Carpenter Bees, so the one you observed may have been emerging from a Carpenter Bee nest.
What places do they live
I got bit by tiger bee fly. It hurt what kind they have poison? It feels not like same other ant, bee, mosquitos , els.
We suspect you were bitten by something other than a Tiger Bee Fly.
My son was just bit too.
I have also been bit by one of these
Saw one this weekend in Kentucky. It was UGE! UGE!
Well – I just found one here in Hamilton – in our front den resting on the lamp shade!
Thanks to your post I now know it’s harmless.
My son and I had a bet – I said moth, he said some sort of bee.
Thanks for the info.
Cheers
do tiger bee flies migrate
To the best of our knowledge, they do not.
How do you get rid of them?
From TN
How do you get rid of them?
From TN
I’ve been bitten by one of them he bit or stung me multiple times and it hurt real bad
To the best of our knowledge, Bee Flies neither sting nor bite. We suspect you are mistaken regarding the identity of the insect that bit or stung you.
I have been bit also. If you get close to what I assume is a nest they will stay with you until you are a distance from the nest and every time they land on you they will bite or sting you. They leave welts when they bite! I came to this page trying to find a way to get rid of them. We can’t go in our back yard without getting bit.
I live in toledo ohio and I have quite a few in my front yard near my wind chimes on my porch just think it’s amazing that they are traveled to far
I live in Cincinnati Ohio and I have seen those bugs too they are very creepy but don’t show any harm they were flying around and landing on my trampoline in my backyard.
Want to join as I have had 2 recent bug’s I didn’t know. Thanks
Hi Mary,
You can click the Become a Patron box on our site for information on getting priority responses to your queries in the future, though we believe we already responded to both of your identification requests today.
Just saw one today in Houston for the first time ever. Beautiful, large, and docile.
I have one flying around my porch posts where the carpenter bees made nests, good to hear they are harmless, live in Ohio also.
I was bite or strung by a bug that looks a lot like this. It was on my hand. It hurt really bad. My hand swelled up. And 8 hours later my hand is still Swollen. And itches a lot. Do they have venom of any kind.
Tiger Bee Flies do not bite nor sting. It must have been something else. Since Bee Flies mimic stinging insects, we would guess you were stung by a Wasp.
Nope was definitely this bug not a deer or horse fly. I don’t know about the whole best thing but this but repeatedly bite me and it does hurt. That is how I knew it landed on me and every time it landed on me it hurt. 100% sure I am NOT mistaken.
Thank you for posting they re harmless. My son-in-law is allergic to bees and when we saw this in the backyard it was very worrisome. Southern California
Oh yes they do bite! I have been bitten and am having some kind of reaction to it. I am not mistaken either. I was in my pool laying on a float and it landed on my foot so I got a good look at it. My foot is swelled and itching is relentless. They definitely bite!
Saw one in my backyard today. Fayetteville, NC
08.23.2021 Atlanta 9:30pm. Cat just brought one into the house. I caught it in a tupperware and put it back out. Then came to look it up. That thing is huge! and you can hear the wings flap. Make a buzzing sound like a micro Harley.
Oh no , i just killed one. Wasnt taking any chances. Not sure if this is one.