The Red-footed Cannibalfly, one of the largest species of robber flies, can measure over 1 1/4″ in length. Known for its predatory lifestyle, this insect’s body design supports quick streamlined flight and powerful leg movements, thanks to its muscular thorax.
As a natural born killer, the cannibalfly preys on other insects, helping to control populations as part of the ecosystem. With an impressive size and unique hunting methods, it truly deserves its intimidating name. To learn more about this fascinating creature, continue reading this comprehensive guide where we’ll dive deep into its features, characteristics, and the role it plays in the environment.
Red Footed Cannibalfly Basics
The Red Footed Cannibalfly (Promachus rufipes) is a fascinating insect belonging to the Asilidae family, commonly known as robber flies. These fierce predators exhibit extraordinary acrobatic skills and predatory proficiency.
- Order: Diptera
- Family: Asilidae
- Species: Promachus rufipes
Robber flies are adept hunters, preying on a variety of insects. They showcase exceptional prowess, even when attacking larger or armed prey. Their agile flying abilities and keen eyesight contribute to their hunting success.
| Features | Red Footed Cannibalfly | Other Flies |
|---|---|---|
| Size | Large | Varies |
| Hunting | Extremely proficient | Varies |
| Prey | Wide variety | Varies |
Key characteristics of the Red Footed Cannibalfly include:
- Large, powerful body
- Long, spiny legs for grasping prey
- Piercing mouthparts to inject venom
Overall, the Red Footed Cannibalfly stands out as a remarkable species within the world of flying insects due to its exceptional predatory capabilities.
Physical Characteristics
The Red-Footed Cannibalfly (family Asilidae) is known for its distinctive appearance and excellent predatory skills. Let’s delve into its physical characteristics for a better understanding:
- Size: An adult Red-Footed Cannibalfly can grow to a considerable size, with some reaching up to 3 inches (7.6 cm) in length 1.
- Color: Predominantly black in color, this insect can easily blend into its surroundings.
- Eyes: They possess large, prominent eyes that enable them to easily spot and track their prey.
- Wings: The Red-Footed Cannibalfly has strong wings that allow it to perform impressive acrobatic maneuvers and pursue prey effectively.
- Pointed Ovipositor: Female Red-Footed Cannibalflies are equipped with a sharp, pointed ovipositor for laying eggs.
- Black Rounded Tip: This insect has a noticeable black rounded tip on its abdomen, which may aid in identification.
In summary, the Red-Footed Cannibalfly boasts multiple distinguishing features that contribute to its success as a predator.
Habitats and Range
The Red Footed Cannibalfly is native to North America. They can be found across the United States, southern Canada, and Mexico.
In the United States, they are commonly spotted in North Carolina, where they thrive in various habitats. Examples of these habitats include:
- Meadows
- Forests
- Gardens
This species prefers areas with abundant prey and vegetation. They are predators, feasting on insects like bees, wasps, and other flies.
The Red Footed Cannibalfly can adapt to different environments. However, they are more common in meadows, where they have easy access to both prey and vegetation.
Here’s a comparison table of their prevalence in selected countries:
| Country | Prevalence |
|---|---|
| United States | High |
| Canada | Moderate |
| Mexico | Moderate |
To summarize, the Red Footed Cannibalfly inhabits various habitats across North America. They are frequently found in meadows, forests, and gardens, with a higher prevalence in the United States, particularly North Carolina.
Prey and Predation
The Red Footed Cannibalfly is an impressive predator in the world of insects. As a member of the arthropoda phylum, it possesses notable hunting skills.
- Common prey: bees, wasps, grasshoppers, spiders
- Method: ambush or chase
It is not picky when it comes to their diet, targeting a variety of arthropods. As an example, they hunt bees, wasps, and grasshoppers. These predators are also known to prey on spiders.
The Red Footed Cannibalfly employs two main predation techniques. It either ambushes its prey or chases them down until it can catch them.
Here’s a comparison table of its most common prey:
| Prey | Size | Technique |
|---|---|---|
| Bees | Small | Chase |
| Wasps | Small | Ambush |
| Grasshoppers | Medium | Ambush/Chase |
| Spiders | Varies | Ambush |
The Red Footed Cannibalfly’s adaptability helps it maintain an abundant food supply, contributing to its success as a predator.
Reproduction and Life Cycle
Red Footed Cannibalfly reproduction occurs in summer. Male and female animalia engage in mating rituals.
- Example: Males display colorful patterns to attract females.
After mating, females lay eggs on vegetation. Larvae emerge soon after.
- Larvae: Predatory, feed on other insect larvae.
As they grow, larvae undergo several stages (instars) before pupating.
- Pupation: Takes place in soil.
Adults emerge and the cycle repeats, contributing to ecosystem balance.
| Male | Female | |
|---|---|---|
| Role in Reproduction | Courting, mating | Egg-laying |
| Mortality Rate | Higher | Lower |
In summary, the Red Footed Cannibalfly life cycle involves mating, egg-laying, larval stages, pupation, and adult emergence.
Identifying Red Footed Cannibalfly
The Red Footed Cannibalfly belongs to the family Asilidae and is part of the Orthorrhapha and Asiloidea subgroups, specifically the Asilinae subfamily. To identify this fascinating insect, let’s look at some of its key features:
- Large size (over 1 1/4″ in length) 1.
- Long, narrow body, aiding in streamlined flight 1.
- Stout thorax packed with muscles for wings and legs 1.
The Red Footed Cannibalfly’s eyes are another notable aspect. With a dramatic, large appearance occupying most of its head, these eyes help the cannibalfly efficiently locate and capture prey.
Interestingly, Red Footed Cannibalfly has been observed preying on large insects, such as the Ruby-throated Hummingbird 1. Additionally, their distinct yellow markings on the body and red feet make them easily distinguishable among other species.
In conclusion, identifying the Red Footed Cannibalfly involves examining its size, body shape, thorax, eyes, and distinctive color patterns.
Threats and Interactions
Red Footed Cannibalfly, also known as the Red-footed Robberfly, is a fascinating species of the Asilidae family.
Predators
Red Footed Cannibalfly is a predator itself, preying on smaller insects. It faces threats from larger predators like birds and spiders. To help protect itself, the Red Footed Cannibalfly uses its coloration to blend into the environment.
Bite
The Red Footed Cannibalfly has a sharp and powerful bite, which it uses to catch its prey. It injects saliva containing enzymes, these enzymes help break down the prey’s internal tissues for easier consumption. The bite is typically not harmful to humans, but it can be painful.
- Sharp bite: Efficient for catching and feeding on prey
- Enzymes in saliva: Aids in breaking down the prey’s tissues
Robberfly Characteristics
- Aggressive predators: Attack and feed on other insects
- Fast and agile flyers: Can catch their prey mid-air
- Strong forelegs: Used for gripping on to their prey while feeding
Enzymes and Other Adaptations
The Red Footed Cannibalfly possesses several specialized adaptations for its predatory lifestyle:
- Enzymatic saliva: Breaks down prey’s internal tissues
- Long, sturdy proboscis: Can pierce through the tough exoskeletons of prey
- Spiky hairs on legs: Helps grip prey and provides stability during feeding
| Feature | Red Footed Cannibalfly | Other Robberflies |
|---|---|---|
| Enzymatic saliva | Yes | Yes |
| Proboscis | Long, sturdy | Varies |
| Leg hairs | Spiky hairs | Various styles |
In summary, Red Footed Cannibalfly is a fascinating predatory insect with specialized adaptations to catch and consume its prey. It faces threats from larger predators but uses its coloration to blend in and evade them.
Photography and Documentation
The Red Footed Cannibalfly is an interesting subject for photographers and enthusiasts. Capturing stunning photos requires a few essential steps.
- First, visit BugGuide for information on the species and useful tips for photography and identification.
- Join the ID Request or Frass Forums to connect with others interested in this fascinating insect.
To document your observations, consider the following:
- Store images in a digital portfolio as a record of your journey with the Red Footed Cannibalfly.
- Submit your photos to the BugGuide Calendar of Upcoming Events for a chance to be featured.
Here’s a comparison table of two popular methods for photographing this captivating insect:
| Method | Pros | Cons |
|---|---|---|
| Macro Lens | Detailed close-up shots | Expensive equipment; requires precision |
| Smartphone | Conducive for casual photography | Limited in terms of image quality and flexibility |
Sharing your findings and documentary work through forums, calendars, or events will not only inspire others but also help establish a community of enthusiasts who can learn from each other’s experiences.
Footnotes
29 Comments. Leave new
Good thing you added these posts. I had one of these alien bugs land on my arm last week. I only noticed it because my arm started to tingle and felt like the skin was going numb…I thought it looked like a cross between a hairy spider and a mosquito, until I was able to get a closer look! I do have a number of pictures (I captured one to take pictures so I could prove to friends it existed…but will now release so it can continue to keep the wasp population down) and will try to figure out how to post them 🙂
Jen
When I first saw robber flies in Turkey I was very wary. I’d never seen a fly that size. Then I saw one fly up and catch one of the smaller biting flies out of the air and I decided they were my friends after all.
True story: so I’m out in my backyard looking for bugs to photograph, when I find this robber fly sitting on a fence rail. I approach with the usual care to get as close as possible, but I am having difficulty because of the summer menace in Western MA known as “DEER FLIES.” The only natural way to keep them off of me (that I’m aware of) is to have my dog by my side because apparently dogs taste better to deer flies — anyway I wasn’t subjecting Molly to that torture, so they are distracting me, buzzing around my head when the robber fly takes off right for me. I first thought I was annoying it and had provoked a warning buzz or something, but then I noticed it had landed not too far from its original parking spot. As I got close again, I saw that it now had lunch: one of the deer flies just buzzing around my head! Talk about my hero! I ended up taking quite a few pictures of it and its prey, which can be tricky because I don’t like to scare off bugs from hard-earned meals (I guess it wasn’t that hard-earned in this case, but still). I thought I had done just that when the robber fly left its prey on the fence, only for it to do another buzz-by and land with another deer fly!
Thusly, all I can say is, robber flies may not be man’s best friend, but they might be a close second. (They also deserve a nomination for dog’s best friend. 🙂
Hi Michael,
Thanks so much for your first hand observations. Normally we hear that these large Robber Flies prey upon bees and wasps. We would love to post one of your photos. Can you please send it? If you do, include the subject line: “Robber Fly eats Deer Fly”.
Hi bugman,
I’d love to and will send a photo, but I should specify that this was not a red footed cannibalfly. Just a cousin, and I imagine a smaller one.
I agree Bugman, my insect collection is out in my front yard, nestled in host and nectar plants, water sources, old wood, bare spots of sand, and mucky mud. Right were it should be!
Thanks for your input.
i have a question about how the misqito EAT the fly
There is nothing in this posting about Mosquitoes, which is what we are speculating you mean by misqito. Mosquitoes do not eat flies.
Thank you! Found one of these in Central Texas this morning! I’ve got me in a jar! Great to know they eat wasps!
Releasing it will ensure it can continue to eat wasps.
Do they sting? My daughters father killed one.
They do not sting, but they might bite if carelessly handled.
I was so amazed to see “my” bug featured. Two days ago I saw what I thought was a dragon fly flying over my pool. Yesterday I found it dead on the pool rail It looked like some kind of wasp/bee. We have an abundance of wasps this year so I’m sure it was well fed. What do suppose caused it to die? It is in perfect condition. It is between one and a half to two inches long and its wings are almost as long as its body. It does only have 2 wings and doesn’t look there were ever any more. It has 6 legs that resemble spider legs. The underside of its belly is a tan color with the top being yellow with wide black stripes. It has a big furry body with bulging eyes and looks almost like it has a little beard. It does look like it does have a long black stinger at the base of its “tail.” Are you sure it doesn’t sting? I’ve never seen a bug like this in 65 years. I live in St. Louis, MO, where did this one come from and how did it get here? It looks to be traveling alone. Do they have hives? Would you like me to mail you this bug?
Robber Flies are solitary hunters and they do not have hives. They do not sting, but a bite might result from careless handling of an individual. We don’t have a theory as to why the individual you found was dead.
It’s not often one gets to see Red Footed Cannibalflies mating. Thank you for this. 😉
I found it at 127am weid what this bug do????
I found one but it’s all dark black, do they have a different name?
There are numerous species of Robber Flies.
Saw what I thought was a robber fly but the stripes were furry. Unfortunately, did not take a picture! I am in rock hill, sc visiting family. Can they be furry? Coolest bug I’ve seen in a long time! Also have a praying mantis hanging out by a light which pleased me as I very rarely see them! Lisa
Some Robber Flies are quite furry including most members of the genus Laphria.
This is the creepiest bug of u see it in person
Thank you for your speedy reply! ? We knew we could count on you and your wonderful website!
you are most welcome
This is awesome! I had to find what kind of alien animal was this and found this awesome page!One of these just entered into our house. I trapped it with a clear small bowl so we could take a closer look. Never seem them before, definatelly looks alien. I didn’t see the stinger, it didn’t look harmful as we examined. I am glad I didn’t listen to the people telling me to kill it, I released it outside.
I found one Red footed Cannibalfly and thought it was a queen bee. I had found it floating in the spring of my camp at Lithia springs in Florida. I thought I’d saved it’s life after I put it on a flower to sun-dry
Found something eerily similar dead on my bathroom counter. It is quite small but the stinger looks terrifying, I almost thought I had a poor dead dragon fly til I saw the pointed end and weird coloring and shape upon closer inspection. This one is about the size of a quarter. I’m in Oregon, could I have mistaken it? I’ve had some strange insects found dead in my home this summer including one beheaded asain killer hornet 😳
Me and my dog have something covering our scalp it’s all over us and noone will help me ,can u please help me ?
Hi Valorie. Did you send in the images for us to try to identify what it is? If not, you can do it here. Please note that as of now, it is a voluntary, uncompensated effort, so we do tend to get backed up a little. Thanks