Aggregative behaviour in the fossorial lizard Amphisbaena darwinii (Squamata, Amphisbaenidae)

We present herein observations on A. darwinii made from 2008 to 2011 as part of herpetofaunal inventories in southern Uruguay. Some voucher specimens were accessioned at the herpetological collection of Museo Nacional de Historia Natural, Montevideo, Uruguay (MNHN). Specimens of Amphisbaena darwinii were found under stones or abandoned pieces of concrete and metallic sheets in some natural and urban areas. In these associations, specimens were very close to each other, sometimes with their bodies side by side or one above the other/s.