Carr's book lists just a single record of Lasius umbratus, when two (post Nuptial flight) Queens were found on a road at Tollerton in 1908 (Crawley, W.C.) but there are recent records from neighbouring Leicestershire, even reaching as close as Loughborough (Leicestershire and Rutland Environmental Records Centre).

It was suspected this ant may well be in the very south of Nottinghamshire, before the finding of a Lasius fuliginosus colony at Netherfield Lagoons in 2018  further raised hopes of umbratus (the host species for fuliginosus queens) turning up. And it eventually did, when many Lasius umbratus workers were found co-existing with foraging Lasius fuliginosus workers after a second fuliginosus colony was found at Netherfield in October 2023 (Pendleton, T.A.).