The Puritan tiger beetle used to be found up and down the Connecticut River, but climate change, dam construction, flooding, and other ecosystem changes have reduced its range to a few small patches of sandy soil. For researchers, where those patches are is a well-guarded secret. That's because last fall, they planted hundreds of beetle larvae on a few of those beaches, with the hopes of finding adults this year. Rodger Gwiazdowski gently runs his hands through sand. Puritan tiger beetles burrow