The Duvalius abyssimus, is a new species of cave beetle discovered in 2014 by biologists Ana Sofia Reboleira and Vicente Ortuño. The species lives in the Krubera Cave in Abkhazia, and has no wings or functional eyes. It was discovered during expeditions of the Ibero-Russian Cavex Team - International Cave Exploration Team to Krubera-Vorónia (deepest cave in the world in 2010 and 2013.