Important features that distinguish Myrmica ruginodis from Myrmica rubra are the gentle curve at the base of the antenna (and the length of pair of spines projecting from the rear of the main part of the thorax. In Myrmica rugodinis these spines are relatively long - as long as the distance between their tips.
Myrmica rubra is the other common red ant but this has short spines protruding from the petiole and a distinctly angled scape (antennal base).
Unless identified by a recognised expert, a photo is required and the specimen should be examined with a microscope. In the comments box, state the key or ID method used and describe the size and identifying characters.
Woodland and other sheltered sites.
Mating flights July and August.
Forms nests in tree trunks and rotting wood, under stones etc.
Myrmica ruginodis is one of the most common of the Myrmica, occurring throughout Britain and especially in the north.
Common in Leicestershire and Rutland.
Leicestershire & Rutland Map
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Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015