File:Phillips, A.L., Attewell, P. J. 2011. An occurrence of Lasius sabularum and Lasius umbratus within the same nest in Lincolnshire, England.pdf

Summary
Phillips, A.L., Attewell, P. J. 2011. An occurrence of Lasius sabularum (Bondroit, 1918) and Lasius umbratus (Nylander, 1846) within the same nest in Lincolnshire, England. BWARS Newsletter Autumn 2011:22-24.