HESPERIA ACTION. 



217 



The larva feeds on the Heath False Brome-grass 

 (Brachypodium pinnatuni), Couch-grass (Triticum repens), 

 and probably other grasses. It is full-fed about the end 

 of June, and the imagines come out about mid-July and 

 sometimes continue into September. 



The full-grown larva (Fig/ 253) is between fin. and 

 i in. in length, and tapers somewhat to both extremities. 



98 



255 

 Male. 



HESPERIA ACTION. 



The head is large, brown at first, then paler; the colour 

 of the body is whitish-green, with a darker streak on 

 the back edged with yellow, and down the centre of 

 this streak is a pale line. A narrow yellow line 

 follows this on each side, and below that is a broader 

 one of the same colour. The spiracles are flesh- 

 coloured, and are contained in a pale streak. 



