<em>Ctenomys lewisi</em> (IMAGE) University of Nebraska-Lincoln Caption Ctenomys lewisi is a previously known species of tuco-tuco that is similar in appearance to four new species. Credit Scott Gardner/University of Nebraska-Lincoln Usage Restrictions None 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.