WALL
The Wall is very common in England - Wales - Ireland and the southern counties of Scotland. There is a small difference between the male and female wing shapes - the fore wings of the latter being more rounded. The female is also slightly larger. The wing 'eyes' may vary in size; sometimes they lack the white pupil in the fourth dot on the hind wing; occasionally a small dot appears alongside the fore wing 'eye'. The caterpillar is bright green and feeds on grass. The butterfly is on the wing in April to October and favours height sunlight. Wingspan approx. 1 1/2 - 1 7/8 inches.