At least 5mm long
No interactions present.
Definitely Myrmica sp. - but which one? There are several similar common species and, just to complicate things, this doesn't look like a worker caste.
BMIG website: www.bmig.org.uk (centipedes, millipedes & woodlice)
BMIG Newsletters ~ www.bmig.org.uk/view/resource/bmig-newsletter
BMIG Bulletins ~ www.bmig.org.uk/view/resource/bmig-bulletin
Yes not an easy group so therefore best to Genus as indicated . I got this earlier month http://www.ispot.org.uk/node/338931?nav=users_observations
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