Flight period: was recorded in England between mid-June and July (in Europe, flies June to August)
The Orange-spotted Emerald has bright green eyes and yellow or orange, elongated spots along the length of the dorsal surface of the abdomen. The thorax and ground colour of the slender abdomen is bronzy-green. S10 shows a yellowish dorsal mark, quite noticeable in flight.
Male: a slightly waisted abdomen.
Female: more parallel sided and the leading edges of the wings are suffused with yellow.