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What are Crazy Rasberry Ants?

Mary McMahon
Mary McMahon
Mary McMahon
Mary McMahon

Crazy rasberry ants are a new species of ant which was discovered in Texas in 2002. As of 2008, biologists have been unable to firmly classify the insects, so they have no formal scientific name. They are believed to be relatives of the so-called “crazy ants” found in regions of the Caribbean, however, and they represent a serious problem for Texans. In addition to multiplying at incredible speed, crazy rasberry ants are also voracious, and resistant to a number of pesticides and other ant control measures.

The “crazy” in “crazy rasberry ants” comes from their movements, which are extremely rapid and erratic. Unlike other species of ants, which typically form organized groups, crazy rasberry ants simply swarm, covering all available surfaces and eating plants, insects, and small animals such as baby birds in their path. The “rasberry” is a reference to Tom Rasberry, an exterminator who first identified the ants as a unique problem in 2002, after dealing with several infestations for various clients in Texas.

Crazy raspberry ants are resistant to a number of pesticides.
Crazy raspberry ants are resistant to a number of pesticides.

Eliminating crazy rasberry ants is extremely difficult, although the Texas Department of Agriculture, in cooperation with several universities, is certainly trying. These ants multiply extremely quickly, and the colonies have several queens, making it vitally important to find the nest and destroy it to get rid of the ants. Crazy rasberry ants will also compete with other ant species, often choking them out because they can reproduce so quickly and because they will cheerfully eat other ants.

These ants also demonstrate remarkable adaptability and intelligence. For example, when pesticides which are effective against the ants are used, the ants will literally stack the bodies of the dead to build bridges, with the goal of avoiding direct contact with the pesticides. They are also extremely hardy, preferring a warm, moist environment, and they have been known to infest electronics in addition to structures, in some cases actually causing severe damage.

Crazy rasberry ants probably hitched a ride from somewhere on a cargo ship, which means that they undoubtedly exist elsewhere in the world, although so far they have only been documented in Texas. Within Texas, the ants are slowly spreading, both on their own and with the unwitting assistance of cars and trucks. Because they are difficult to contain and control, some concerns have been raised about the inevitable spread of crazy rasberry ants, which could cause a significant amount of economic damage.

Frequently Asked Questions

What are Crazy Rasberry Ants?

Crazy Rasberry ants, scientifically known as Nylanderia fulva, are an invasive ant species notorious for their erratic and rapid movement. Originating from South America, they were first reported in Texas in 2002. These ants are a significant nuisance due to their affinity for electrical equipment, causing short circuits and damage.

Why are they called Crazy Rasberry Ants?

The name 'Crazy Rasberry ants' comes from two distinct characteristics. The 'crazy' part refers to their unpredictable and swift movements, while 'Rasberry' is derived from the exterminator Tom Rasberry, who first identified the ants in Texas. Their behavior and the discoverer's last name combined to give these pests their unique moniker.

What kind of damage can Crazy Rasberry Ants cause?

Crazy Rasberry ants can cause extensive damage, particularly to electrical equipment. They are known to infest electronic devices, from smartphones to industrial equipment, leading to short circuits and failures. Their large colonies can also undermine structures, damage crops, and displace native species, impacting local ecosystems.

How do you control or eliminate Crazy Rasberry Ants?

Controlling Crazy Rasberry ants involves a multi-faceted approach. Professional pest control services often use baiting techniques, perimeter treatments, and nest eradication. Homeowners are advised to seal entry points, maintain yard cleanliness, and reduce standing water to deter ant colonies. Persistent infestations require ongoing treatment due to the ants' rapid reproduction rates.

Are Crazy Rasberry Ants dangerous to humans or pets?

While Crazy Rasberry ants do not pose a direct threat through stings or bites like some other ant species, they can indirectly affect human and pet health. Their massive colonies can lead to stress, and their attraction to electrical wiring can create fire hazards. Additionally, they can outcompete native ants, disrupting local ecosystems and food chains.

How can I identify a Crazy Rasberry Ant infestation?

Identifying a Crazy Rasberry ant infestation involves spotting large numbers of ants with erratic movement patterns. They often form trails that are less organized than those of other ants and can be seen in diverse locations, from homes to industrial areas. You may also notice damaged electrical equipment, a sign of their nesting habits.

Mary McMahon
Mary McMahon

Ever since she began contributing to the site several years ago, Mary has embraced the exciting challenge of being a AllThingsNature researcher and writer. Mary has a liberal arts degree from Goddard College and spends her free time reading, cooking, and exploring the great outdoors.

Learn more...
Mary McMahon
Mary McMahon

Ever since she began contributing to the site several years ago, Mary has embraced the exciting challenge of being a AllThingsNature researcher and writer. Mary has a liberal arts degree from Goddard College and spends her free time reading, cooking, and exploring the great outdoors.

Learn more...

Discussion Comments

anon989913

They do not like cedar oil and Diatomaceous earth which we use around our water well and pump. Cedar shavings repel them and the earth dehydrates them.

anon55652

Crazy ants have taken over our property, inside the house and out. They particularly love water pipes. they will drive you crazy, as you can't put food down on a counter anywhere. We spray and spray. But they don't bite or sting. You just feel movement on you. Creepy.

We live half way between Houston and Corpus Christi.

anon45428

anon32145 the crazy ants are not a hoax! i have them here at my house.... you can not get get rid of them.... they short out my pump switch i've had to replace it twice! ant sprays works on the CRA that are in a line but that is about it. they take over my hummingbird feeder, trees, shrubs, it's like some kind of horror movie. they do not bite; they just crawl all over your legs.

anon32506

There is a recipe of flour, boric acid and bacon grease that can be used against roaches. Has anyone tried it on the ants? I do not have the recipe but it was in a fix-it column in a newspaper in Minnesota at one point. Good luck with those ants Texas. I hope they do not come to MN.

Diwiyana

I suspect they are from South America and are kin to the army ants there, which also swarm over things and devour animals in their path. These ants were said to be allergic to uncooked hot cereal, at one point. They were supposed to eat it up, swell up inside, and burst. Ha ha. They ate it up all right, kept on swarming, suffered no ill effects whatsoever, and kept on spreading. Gasoline doesn't seem to hurt them either. Neither does motor oil poured down their holes. Pesticides kill some but not the queen. When they bite, it hurts like crazy too!

anon32190

Hey anon - yes they do exist. No hoax. Do a web search.

anon32145

This has the hallmarks of science fiction horror and one wonders whether it is, in fact, a hoax designed to test people's willingness to believe nonsense.

Do such ants really exist? Are there any additional sources of information on them?

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    • Crazy raspberry ants are resistant to a number of pesticides.
      By: lunamarina
      Crazy raspberry ants are resistant to a number of pesticides.