As late summer transitions to fall, North Texas isnow experiencing significant outbreaks of black crickets.
The insects become one of the most prevalent pests this time of year in most areas of the state, according to Texas Agrilife Extension.
Part of the Gryllus assimilis complex, this group of cricket species is commonly known as field crickets, or black field crickets, and they remain somewhat understudied. But here is what scientists know about them.
Why the outbreak?
Outbreaks tend to occur after dry springs and summers, with the highest populations typically seen in August and September and especially after periods of heavy rainfall, said Michael Merchant, who wrote about the insects in his article for Texas Agrilife Extension.
Field crickets lay their eggs in the fall and they tend to prefer bare soil, with a single female capable of producing 150 to 400 eggs. These eggs endure the winter in the ground and hatch in spring.
While field crickets primarily dwell outdoors, they can occasionally find their way indoors, and become pesky nuisances.
“We had a burst of them after Labor Day weekend when it got cooler and I expect with cooler temperatures upcoming, they will be active again,” said Wizzie Brown, an Texas A&M AgriLife Extension entomologist.
Are they harmful?
Their presence can be jarring as largeswarms ofcrickets can lead to unpleasant odors.
“They are scavengers, so they can sometimes feed on vegetation, but not typically enough that it’s going to cause noticeable damage,” Brown said.
Experts say to manage crickets populations, controlling outdoor lighting is crucial since they are attracted to bright lights during their mating season.
What to do?
Using insecticides is not ideal to control them because they play a pivotal role in the ecosystem, experts say. The insects help break down organic matter and recycle dead plant material, according to the National Library of Medicine.
Rather than relying on insecticides, try essential oils. Crickets are repelled by specific scents, including peppermint, lavender, citronella and vinegar, pest control experts say. Using essential oils or natural repellents with these scents around your house may help discourage crickets from entering.
“If you want to avoid them, trun off porch lights or use bulbs that aren’t attractive to insects. It’s also a good idea to make sure that you have good seals around doors & windows and screens are in good repair to keep them outside,” Brown said.