. The moths of the British Isles . ale, they can be distinguished by their darker hindwings and the blackish central crescent thereon. A form ofthe female in which the large central patch of the fore wings isreddish brown has been named ntfescens^ Tutt ; there may bemales also of this form, but I have not seen any. In bothsexes, the brown patch extends nearer to the inner margin insome specimens than in others, and not infrequently there is aspur from the lower edge of the patch to this margin. The caterpillar is green, with darker green lines, one alongthe middle of the back, and two along ea
. The moths of the British Isles . ale, they can be distinguished by their darker hindwings and the blackish central crescent thereon. A form ofthe female in which the large central patch of the fore wings isreddish brown has been named ntfescens^ Tutt ; there may bemales also of this form, but I have not seen any. In bothsexes, the brown patch extends nearer to the inner margin insome specimens than in others, and not infrequently there is aspur from the lower edge of the patch to this margin. The caterpillar is green, with darker green lines, one alongthe middle of the back, and two along each side ; the usualraised dots are green or brownish, and each emits a fine hair ;the head is green and rather glossy. It feeds on bilberry(Vaccinium myrtilliis) in August and September. (Plate 37,Fig. I ; after Hofmann.) The moth, which is out in June andJuly, hides by day among heather, bilberry, etc., especiallywhere these plants overhang the edges of banks or may be found locally in most of the southern counties of. 2 PL 34- 1. Small Fanfoot: caterpillar. 2. Fanfoot : caterpillar. 3. Clay Fan-foot: cato-^illar. (?92.
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