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Tiny Harbingers of Halloween, Ladybugs Take Hitchcockian Turn

By Sandhya Somashekhar
Washington Post Staff Writer
Sunday, October 22, 2006

For years, "the little monsters," as Candace Terry calls them, have arrived toward the end of every October like malevolent little trick-or-treaters, sneaking through the cracks and taking over your home.

But no experience could prepare her for what she saw when she walked into her western Loudoun County dog kennel Wednesday afternoon: little red-and-black trespassers covering the walls like wallpaper come to life, collecting in corners and squirming an inch deep on the windowsill. Back home, they had blanketed her bathroom walls and skittered into her books.

The ladybugs were back, and they were everywhere.

"Without exaggerating, [the exterminator] told me there were 40,000 in one spot," Terry recalled. "All I can say is that there were jillions of them."

For a few days, the usually beneficial creatures lose their nursery-rhyme charm and garden-friendly reputation and become a nuisance across the Washington region and the country, collecting by the tens of thousands in buildings in their search to find a warm place for the winter.

As if the mere presence of tens of thousands of bugs in your living room isn't enough, they emit a gut-churning musky odor that lingers after they die -- and they die quickly in dry, indoor air. They also leave yellowish stains on everything, a defense mechanism called "reflex bleeding."

And they occasionally sting -- a light pinprick less painful than an ant bite, Terry said.

Other than that, they aren't particularly harmful, said Eric R. Day, manager of the Insect Identification Lab at Virginia Tech. He thinks the aphid eaters, which offer a summer's worth of free pest control, get a "bad rap" because of the fall invasion.

The type of ladybug that causes the ruckus is the Asian lady beetle, an invasive species present in the eastern United States for about 13 years, he said. How the bugs got here is unclear, but the best guess, Day said, is that they hitched a ride on cargo ships or escaped from U.S. Department of Agriculture experimental fields, a charge the agency denies.

However they arrived, they hit the region with gusto last week, lured out of forests by the warm daytime sun and driven indoors with the evening chill, he said.

"You get these warm days at the end of October, and they get active," he said. "If you have a house that's infested, you can literally find thousands and thousands inside."

The phones at the LeMarr Group, an exterminator in Fauquier County, have been ringing incessantly since the red-and-black cloud descended. On one of Ron LeMarr's first jobs Wednesday, he entered a large home with a swarm so dense it obscured the house's cathedral ceilings, he said.

Heading to another job, he drove through a cloud of ladybugs so dark and creepy it reminded him of a horror movie.

"It was something out of Alfred Hitchcock," he said. "You could barely see."

His family did not escape unscathed, either. One ladybug stained a new pink blouse, and another left its yellow mark on a lampshade, LeMarr's wife, Susan, said.

"I can't tell you how irritated I am," she said.

Business has been plenty good for pest control companies in Maryland, too. Steve Goldberg of Infestation Control in Rockville said a home he visited had so many ladybugs on the floor that he could hear the crunching beneath his feet. "It was like wall-to-wall carpeting of ladybugs," he said.

In most cases, however, the bugs will just retreat or die without any treatment or can be vacuumed into oblivion.

Terry spent Thursday afternoon sweeping up the thousands of corpses left behind by LeMarr's insecticide treatment, dusting them off a bookshelf and a windowsill, leaving a faint odor and an orange smear on the glass.

She remembers when she was introduced to the swarms a few years ago, when she thought of ladybugs as lucky and sweet. When she found a cluster on the floor, she would carefully sweep the bugs into a shoebox to release outside.

Not anymore, she said.

"Now we step on them, vacuum them, spray them, whatever," she said. "We destroy them with a vengeance."

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