Common in plantations, gardens and parks throughout the British Isles. Widespread and common in Hampshire and on the Isle of Wight. Wingspan 16-19 mm. Despite the name, a medium
-sized pug, with a large, prominent, elongated discal spot, but otherwise rather plainly marked, the most likely confusion species is probably Oak-tree Pug E. dodoneata
, which has a number of black dashes along the veins beyond the discal spot, and buff-coloured border alongside the costa and dorsum. Larva feeds on various coniferous trees, including Norway Spruce, Sitka Spruce and Douglas Fir, over-wintering as a pupa.