This rather honorable title goes to Limacus maculatus, which according to the researchers has a grayish-green or olive-green color, but its common name leaves room for interpretation, as it is known both as the green cellar slug or Irish yellow slug.
The society added that the color may vary depending on the slug's lifestyle and diet, namely, with their bellies full they can be brighter, and if the environment is damp, they'll be more sluggy and less sluggish.
The slug mostly eats leaves, fruits, and rotting plant remnants.
This slug is not native to Latvia and was first found in 2010. It has been seen in Rīga, Ogre, and Liepāja (presumably, cellars).