Squash Bee (<i>Peponapis pruinosa</i>) (IMAGE) North Carolina State University Caption Using genetic markers, researchers have found that the spread of the squash bee in pre-Columbian Central and North America was tied to the spread of squash agriculture. This is the first time researchers have been able to show how cultivating a specific crop led to the expansion of a pollinator species. Credit Elsa Youngsteadt Usage Restrictions Photo credit must be given. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.