AppearanceSlender, 3,1-3,9mm pale green Mirid with black first antenna segment and a black stripe behind the eyes. The 3rd antenna segment is roughly 1.75x the length of the 4th segment. In the otherwise very similar, but overall bigger M. rubi (3,9-4,7mm) the 3rd antenna segment is 2x the length of the fourth. Additionally M. rubi often has a black tip of the scutellum, M. pygmaeus not.
FoodMacrolophus pygmaeus is closely associated with Stachys sylvatica.
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