An invasive ant is causing concern across the country and in Connecticut.

It's called the Asian needle ant, and it has a sting that is sharp, sudden and in some cases dangerous.

There are reports of people having serious allergic reactions.

The ants don't leave trails and are hard to find and track.

Experts say to wear gloves when gardening to avoid stings.

These ants usually reach peak numbers in July and August, scientists say.