Many of these on garden sage.
No interactions present.
E.thoulessi is associated with the Genus Mentha, which belongs to the Family Lamiaceae as does Sage, (Salvia officinalis). A face or lateral view would help but, as is I definitely lean toward Eupteryx melissae.
Season greetings and may 2016 bring you all you wish for,
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Lat/Lng: 50.8, -0.7
OS grid ref: SU9705