WEIRD WEDNESDAY: The Ants Go Marching...

Today's Weird Wednesday story comes straight from the "you can't make this stuff up" file. For facility professionals outside of the Houston, TX area, this story is odd, but amusing. For fms in the largest city in Texas, it's "A Bug's Life" with a nightmarish twist, and the siege shows few signs of ending anytime soon.

The story is about ants...crazy rasberry ants. What makes them doubly nightmarish (especially for fms) is their appetite for electronics (computers, motors, wiring) and their tenacity (it's nearly impossible to kill them because of their extreme numbers and the cost of the treatment).

First spotted about six years ago, paratrenicha species near pubens (their formal name) may have arrived in Houston by way of cargo ships from South America or the Caribbean. Their numbers have gone from the thousands to the millions in the meantime, and their infestations have spread to five surrounding counties. Moving at the rate of a half a mile a year, the ants (named after Tom Rasberry, the first Texas exterminator to do battle with them) do bite, but they don't sting.

Linda Stewart Ball of the Associated Press reports:

Exterminators say calls from frustrated homeowners and businesses are increasing because the ants — which are starting to emerge by the billions with the onset of the warm, humid season — appear to be resistant to over-the-counter ant killers.

And when you do kill these ants, the survivors turn it to their advantage: They pile up the dead, sometimes using them as a bridge to cross safely over surfaces treated with pesticide.

"At this point, it would be nearly impossible to eradicate the ant because it is so widely dispersed," said Roger Gold, a Texas A&M University entomologist.

The good news? They eat fire ants, the stinging red terrors of Texas summers.

But the ants also like to suck the sweet juices from plants, feed on such beneficial insects as ladybugs, and eat the hatchlings of a small, endangered type of grouse known as the Attwater prairie chicken.

Worse, they, like some other species of ants, are attracted to electrical equipment, for reasons that are not well understood by scientists. They have ruined pumps at sewage pumping stations, fouled computers and at least one homeowner's gas meter, and caused fire alarms to malfunction. They have been spotted at NASA's Johnson Space Center and close to Hobby Airport, though they haven't caused any major problems there yet.

Apparently, Moscow has called Houston to make sure everything was safe at NASA.

Here's more on these critters from the Center for Urban & Structural Entomology, Texas A&M University, Department of Entomology:

They have been known to short out many different types of electrical apparatuses. In some cases the ants have caused several thousand dollars in damage and remedial costs. These ants often cause great annoyance to residents and businesses.

Currently, little is known regarding specific biology of this ant. Texas A&M's Center for Urban and Structural Entomology is currently investigating food source attraction (Rachel Wynalda, M.S. student), colony growth, and immature development (Jason Meyers, Ph.D. student). However, research regarding other Paratrechina species is available and may offer close approximations of this species.

Colonies are polygyne (multiple queens) with moderately sized numbers (several hundred to few thousand). However, size of the colony can be much greater, especially when considering their unicolonial (supercolony) behavior. The colonies can be found under or within almost any object or void, including stumps, soil, concrete, rocks, potted plants, etc.

Check out this news footage from a local Houston station:

This story makes me itch.