An article that says that a woman named Judy Reardon in Andover, Minn bought a four pound box of grapes from Costco and as she washed off the grapes and placed them in plastic bags she noticed the spider.

She and her husband took the spider to University of Minnesota's insect museum and they confirmed that it was a black widow spider based on the red markings on its abdomen. Judy contacted the supplier of the grapes in California and was told that this usually happens once a year with their grapes. Judy returned the grapes to Costco with no interest in suing them. She warns that everyone should check, look over their grapes carefully, and wash them as soon as they bring them home.

The black widow got its name because the females eat the males right after they mate. A black widow bite can cause people severe pain, cramping, and illness, but deaths are rare.