After searching pictures of ladybugs online she found that some were an Asian species, though she doesn’t know how they got into the house.
“It’s just an inconvenience,” Sweeney said. “They’re good for gardens, but not for my basement.”
The family plans to go back after a freeze to get rid of any others.
OTHER INDOOR PESTS
The Asian multicolored ladybug is one of several species of insect that tries to get into buildings as winter approaches.
Cluster flies and paper wasps behave in a similar way.
“A more recent bug of note is the western conifer seed bug, which acts the same way. They’re newer to our area,” Ivy said.
Though the seed bug is not appearing in large numbers, the insects draw attention because of their size. They are ¾ inch long, considerably larger than ladybugs.
“They walk slowly, almost like a reptile,” Ivy observed. “These creatures, at this time of year, can drive people crazy as they’re trying to get in for the winter.”
In large numbers, ladybugs give off an odor, and if they are startled, they may leave an orange stain.
Sweeney noticed that, both the stink and the stain.
According to the Penn State College of Agricultural Sciences’s website, some people report allergic reactions to that foul-smelling chemical.
And the ladybugs also bite, it says.
But it is important to remember that none of these creatures are harmful, and wasps and ladybugs are beneficial insects, Ivy said.
“Wasps are an important pollinator, so except when they’re stinging you, they’re beneficial.”
Ladybugs, of course, also serve a purpose because they eat aphids and other insect pests, both the larvae and adult forms.
“All the species do this, including the Asian multicolored ladybug.”
NOT LAYING EGGS