(Radio Iowa) – A bug that’s common from Iowa all the way east to the Atlantic Ocean and south to the Gulf of Mexico is poking at humans this time of year. Iowa State University entomologist Donald Lewis says it’s called the minute (my-NOOT) pirate bug. “This is the insect that bites us on the prettiest, nicest, warmest days of October,” Lewis says.  The pirate bug doesn’t transmit illnesses to humans and Lewis says it’s actually beneficial in the outdoor environment. “They’re also a cold-blooded predator which may be why they’re called pirate bugs,” Lewis says, “because they attack and ambush defenseless spider mites in the trees, they attack the eggs of other insects and that feeding action to eliminate the eggs of other insects could be reducing our pest problems for us.”

As for how humans can defend themselves from pirate bugs, insect repellants haven’t been found to work. Once the pirate bugs’ food supply of OTHER insects dwindles in the fall, the best defense for humans is wearing long sleeved-shirts, jeans or pants and socks and shoes. “When they land on your bare or exposed skin, they poke you with their blunt little beak to see if you are food,” Lewis says. “When you’re not, they give up, but in the process of poking you, it does hurt way out of proportion to the size of the insect.”

Pirate bugs — also known as insidious flower bugs — are oval shaped and about a fifth-of-an-inch long.