What Do Wheel Bugs Eat: A Handy Guide to Their Diet

folder_openHemiptera, Insecta
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Wheel bugs are fascinating creatures with unique characteristics, such as the prominent cog-like ‘wheel’ on their thorax, making them easy to identify. You might be curious about what these insects eat and how their diet impacts the environment around them.

These large insects, also known as Arilus cristatus, are actually members of the assassin bug family. This means that their diet mainly consists of other insects, including those that are considered pests. Wheel bugs are beneficial predators in gardens, helping to control unwanted insect populations. Some examples of their prey are caterpillars, beetles, and even other assassin bugs.

So when you encounter wheel bugs in your backyard, remember that they are more helpful than harmful. Their diet primarily consists of pest insects, playing a role in protecting your garden from unwanted damage. Just be cautious around them, as their bite can be quite painful.

What are Wheel Bugs?

Wheel bugs, also known as Arilus cristatus, are a type of insect belonging to the Hemiptera order and the Heteroptera suborder, specifically the Reduviidae family. These insects are native to the United States, Mexico, and can be found as north as Maryland and as south as Texas. As a part of the Arilus genus, they share some similarities with their close relative, Arilus gallus.

These fascinating creatures are known for their unique appearance. On their back, they have a distinct semi-circular crest – hence the name “wheel bug.” This crest resembles half of a cogwheel, giving them a rather prehistoric look.

As for their size, wheel bugs can grow up to 1.5 inches, making them one of the largest insects in the Reduviidae family. Here are some characteristics of wheel bugs:

  • They have piercing and sucking mouthparts called “rostrums.”
  • Their wings develop later in life, after they transition from nymphs to adults.
  • They sport a brownish-gray color, with some individuals showcasing red or orange markings.
  • The nymphs, or juvenile forms, are bright red and black.

When it comes to their role in the ecosystem, wheel bugs are considered beneficial insects. Why? They are excellent predators, helping control the population size of many garden pests. Some common prey for wheel bugs include:

  • Aphids
  • Caterpillars
  • Japanese beetles
  • Stink bugs

However, it’s important to watch out for their bite. Although not aggressive towards humans, if mishandled or threatened, wheel bugs can deliver a painful bite that may cause a burning sensation and swelling. So remember, if you encounter a wheel bug, it’s best to admire from a safe distance and let this beneficial insect do its part in keeping pest populations in check.

Wheel Bugs’ Diet

Wheel bugs are known predators of various insects. As a part of their diet, they consume a diverse range of pests, granting them the status of beneficial insects. Some examples of their prey include:

  • Aphids
  • Wasps
  • Ants
  • Bees
  • Sawflies
  • Leafhoppers
  • Cucumber beetles
  • Squash bugs
  • Hornworms
  • Lady beetles
  • Japanese beetles
  • Brown marmorated stink bugs
  • Roaches
  • Centipedes

The wheel bug uses its straw-like mouthparts to pierce and suck the bodily fluids from its victims, rendering them extremely effective predators. They are particularly fond of soft-bodied insects like caterpillars and aphids, which they can eliminate in high numbers.

Moreover, wheel bugs can also prey on larger insects such as beetles and wasps. As an essential part of the ecosystem, their predatory nature helps maintain a balance in the insect population. Consequently, they contribute significantly to controlling pests that threaten your garden or crops.

You may sometimes see wheel bugs preying on seemingly beneficial insects, such as bees or lady beetles. While this could be a concern, keep in mind that the wheel bug’s overall impact on pest control tends to outweigh potential disadvantages.

In conclusion, the wheel bug’s diet consists of a wide variety of insect prey, including many harmful pests. Their predatory behavior helps maintain healthy insect populations and control destructive pests in gardens and agricultural settings.

Wheel Bugs Hunting Strategies

Wheel bugs, belonging to the assassin bug family, are known for their efficient hunting skills. They primarily feed on other insects, using their unique and deadly strategies to catch their prey. Let’s take a closer look at their hunting techniques.

These bugs are excellent predators, mainly hunting caterpillars, wasps, spiders, and other insects. They use their front legs to grasp their victims tightly. The impressive camouflage abilities of the wheel bugs allow them to blend in with their surroundings, waiting patiently to ambush their prey.

Upon spotting a target, wheel bugs pierce their prey with a powerful proboscis, injecting potent venom to immobilize them. The venom also helps in liquefying the insides of the prey, making it easier for the wheel bug to consume its meal.

Nymphs, the immature stage of wheel bugs, engage in similar hunting strategies. However, they must be cautious and avoid other predators, such as parasitic wasps or praying mantises, who might find young wheel bugs to be an attractive meal.

In summary, the wheel bug’s success as a hunter is attributed to its:

  • Ambushing and camouflage skills
  • Strong front legs for grasping prey
  • Venom-injecting proboscis

Stay cautious around wheel bugs, as their bite can be painful for humans. However, remember that they are playing an essential role in controlling pest populations and preserving the balance within their ecosystem.

Wheel Bugs and Their Environment

Wheel bugs are fascinating creatures that play a crucial role in their ecosystem. As members of the assassin bug family, they mainly thrive by controlling pest populations. You might find them in a variety of habitats, from forest edges to vegetable gardens and fruit trees.

In the United States, these bugs are more commonly found in places with warmer climates, such as Florida. However, they’re also known to overwinter, ensuring their survival in cooler regions during the fall season. Though not native to India, their presence may still be beneficial in gardens across the globe.

Here are some key characteristics of wheel bugs:

  • Distinctive appearance: They feature a cog-like crest or “wheel” on their thorax, making them easy to identify.
  • Size: Wheel bugs grow up to 1 1/2 inches long, making them one of the largest assassin bugs.

And, their preferred habitat includes:

  • Vegetation: Forest edges, garden spaces, and fruit trees provide ample hiding spots and food sources.
  • Predator-prey interactions: With a diverse array of prey including caterpillars and beetles, wheel bugs help maintain a balance in the ecosystem.

During the nighttime, wheel bugs may be drawn to lights, similar to other nocturnal insects. It’s essential to recognize their benefits as they contribute to a healthier environment by preying on potentially harmful insects in your garden.

Now that you’re familiar with wheel bugs and their environment, try to appreciate their unique presence in your surroundings as they play an important role in maintaining the balance of nature.

Wheel Bugs and Bites

Wheel bugs are fascinating insects that play a crucial role in controlling pest populations. They feed on a wide variety of insects, such as caterpillars, Japanese beetles, and even stink bugs, making them beneficial predators in the ecosystem. These unique bugs can be easily identified by the cog-like wheel on their backs.

However, it’s essential to be cautious around wheel bugs, as their bites can be quite painful. When wheel bugs feel threatened, they can deliver a painful bite that contains venom, much like a sting. The intensity of the pain might vary from one person to another, but it’s generally more severe than a bee sting. Though not venomous like some other insects, their bites may cause symptoms such as swelling, numbness, and reddish lesions on the skin.

It’s important to remember that wheel bugs aren’t aggressive towards humans, and bites usually occur when they feel cornered or accidentally touched. To avoid being bitten, it’s best to leave these intriguing creatures to their pest control duties and treat them with caution if you encounter them.

As a summary, consider these key points about wheel bugs and their bites:

  • Wheel bugs prey on various insects, helping control pest populations
  • Easily identified by the distinctive cog-like wheel on their backs
  • Their bites can be more painful than a bee sting
  • Bites might cause symptoms like swelling, numbness, and reddish lesions
  • Usually not aggressive towards humans, but will bite if threatened

In conclusion, wheel bugs serve as effective natural pest controllers and are fascinating creatures that you can appreciate from a safe distance. By understanding their role and treating them with caution, you can avoid the risk of painful bites and appreciate their contribution to a balanced ecosystem.

Life Cycle of Wheel Bugs

Eggs

Wheel bug eggs are typically laid in clusters on tree bark or leaves. The female deposits her eggs in a hexagonal pattern. Once they hatch, tiny red nymphs emerge, ready to begin their journey toward becoming adult wheel bugs.

Nymphs

As nymphs, wheel bugs go through several instars, or molting stages. Each time they molt, they grow bigger and more closely resemble their adult form. Nymphs of wheel bugs are voracious predators and primarily feed on soft-bodied insects helping to control their population in gardens and forests.

Adults and Mating

When wheel bugs reach adulthood, they become even more effective predators, feeding on a wide range of insects, including caterpillars and beetles. These light gray to grayish-brown insects grow up to 1-1/2 inches long and have a distinct, cog-like “wheel” on their thorax, which gives them their name source.

Adult wheel bugs mate during the fall, and the females start laying their eggs soon after. Once the female has laid her eggs, the life cycle of the wheel bug starts anew, with a new generation of nymphs hatching in the spring.

In conclusion, understanding the life cycle of wheel bugs is essential as they play a crucial role in controlling pest populations. So, if you spot these fascinating insects in your garden or backyard, remember their beneficial impact and give them space to continue their life cycle.

Wheel Bugs in Urban Areas

Wheel bugs can be beneficial in urban areas as they prey on various garden pests like stink bugs. They use their piercing-sucking mouthparts to consume these pests, reducing the need for chemicals in your garden.

However, wheel bugs can sometimes become a nuisance themselves. They may infiltrate your home, making you feel uneasy. Don’t worry about getting rid of them, as they don’t infest or damage buildings.

When you encounter wheel bugs in your garden, appreciate their role in controlling pests. In order to support these helpful bugs, avoid using chemical pest control measures when possible. Instead, opt for eco-friendly methods to maintain a healthy environment for both you and the wheel bugs.

Keep an eye on the wheel bug population in your area; if they become overly abundant, it’s time to take action. Consider calling a pest control expert to safely and effectively manage the situation.

Wheel Bugs’ Antagonistic Relations

Wheel bugs are known for their predatory nature. They feed on various insects, focusing their diet on pests such as stink bugs. These beneficial assassins can be found in regions like Maryland, Pennsylvania, and Massachusetts due to their wide distribution.

Despite their usefulness, wheel bugs have a painful bite for those who encounter them. The bite can be compared to a hornet sting and is more severe than a bee sting. It’s useful for Wheel bugs as they require these defenses to protect themselves while hunting. So, even though they go after unwanted pests, it is still a good idea to give them space and avoid handling them.

Here’s a quick comparison of wheel bugs and hornets:

Feature Wheel Bug Hornet
Prey Stink bugs, other insects Insects, spiders
Size 1 to 1-1/2 inches Varies by species
Bite/Sting pain More severe than a bee sting Similar to a bee sting
Distribution Maryland, Pennsylvania, Massachusetts, and more Worldwide, except Antarctica

In conclusion, while wheel bugs are helpful in controlling the population of pests like stink bugs, remember to keep a safe distance from them due to their painful bite.

Additional Facts About Wheel Bugs

In terms of insect identification, you can easily recognize wheel bugs by their unique appearance. They have a distinct cog-like structure on their thorax, which gives them their name 1. Their color ranges from light gray to bluish-gray or grayish-brown, and they measure over 1 1/4″ long 2.

Wheel bugs have a few fascinating features:

  • Long antennae that help detect prey
  • Membranous wings folded flat over their backs (X pattern) 3
  • A three-segmented, straw-like rostrum used for piercing and sucking 3

These insects are not known for their flight capabilities, as they primarily move by crawling on trees and shrubs.

As beneficial insects, wheel bugs play an essential role in controlling the population of other insects such as caterpillars, beetles, and aphids. They use their rostrum to inject a toxin into their prey, which paralyzes and liquefies their insides. They then suck the contents out, effectively eliminating the target 1.

Interestingly, wheel bugs are also natural predators of insects that produce honeydew, a sugary substance that attracts ants and other pests 1.

In conclusion, wheel bugs are a valuable part of the ecosystem. Their unique features make them easy to identify, and their predatory behavior helps maintain a balance in the insect world. Remember to appreciate their presence and be aware that they can deliver a painful bite if threatened.

Footnotes

  1. Wheel bugs: Good bugs with a painful bite – Illinois Extension 2 3
  2. A Wheel (Bug) of Misfortune is Afoot | BYGL
  3. Wheel Bug | Missouri Department of Conservation 2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Authors

  • Bugman

    Bugman aka Daniel Marlos has been identifying bugs since 1999. whatsthatbug.com is his passion project and it has helped millions of readers identify the bug that has been bugging them for over two decades. You can reach out to him through our Contact Page.

    View all posts
  • Piyushi Dhir

    Piyushi is a nature lover, blogger and traveler at heart. She lives in beautiful Canada with her family. Piyushi is an animal lover and loves to write about all creatures.

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22 Comments. Leave new

  • Sheesh! That picture link really WAS back in 2006. Seems like I’ve lost a couple of years somewhere! :s

    Reply
  • I have a pic of a bug that I want to know what it is. Can y’all help?

    Reply
  • Charlotte Romero
    July 20, 2014 5:37 pm

    My parents just spotted a couple of these feasting on the JB the first week of July, 2014, in Parsonsburg, Maryland. They had never seen a wheelbug before; but, they hope more show up.

    Reply
  • We Illinoisians have noticed a marked decline of japanese beetles since the severe drought we suffered in 2012. 2013 brought no jbs whatsoever, and very few mosquitos. This year ive only picked 4 jbs off my raspberries, but the mosquitos have come back with a vengance and make any kind of gardening outside impossible wout bug spray.

    Reply
  • Assassin Bug!

    Reply
  • cool

    Reply
  • A favorite subject of mine. I’ve not seen any on Vancouver Island where I live. Lots of different bees, flies, wasps and hope to have some pictures for you when an appropriate subject appears. We do have Black Widows and Brown Recluses and various Orb Weavers. I maintain a non-aggression pact with all critters, with a relocation clause if needed.

    Reply
  • There have been numerous news stories lately warning of the kissing bug in the southeast United States. The CDC has reported finding kissing bugs in Mississippi, Georgia and Texas and talks of how it can carry the deadly chagas disease. Has a lot of people freaking out because there are a lot of bugs that look very similar if not exactly like it. Thankfully this isn’t one.

    Reply
    • Thanks for letting us know. We didn’t want to appear to be living under a rock when it comes to current events. We noticed the uptick in requests and we knew something must be in the news.

      Reply
  • There was an article about Kissing Bugs a couple of days ago on CNN online. I’m guessing you’ve been hearing from CNN readers.

    Reply
  • Unnecessary Carnage?

    Reply
  • Same here, not far from you! Hamilton, Ohio. Saw this yesterday in my yard & was quite surprised to see such a bizarre insect! Glad I stumbled on this site.

    Reply
  • With long white string thenlittle black and whote everywhere.and shapes like I seen here about masked hunter

    Reply
  • Please help.I am being taken over. My husband doesnt see them.
    Am I crazy should I see my doctor.

    Reply
  • Please help.I am being taken over. My husband doesnt see them.
    Am I crazy should I see my doctor.

    Reply
  • Excuse me what if there’s a green one? I’ve Seen ONE THAT is green

    Reply
  • Here in Arkansas we just came into contact with one of these wheel bugs or a monkey bug insect. We didn’t know what it was so I googled it and I’m very glad I did. Bc there are other kinds of blister bugs here as well.

    Reply
  • I snapped a picture of these wheel bugs mating on my screen in Oklahoma.

    Reply

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