PYRALIS] PYRALIDIDAE 427 



2. Second line of forewings nearly straight . 1. glaucinalis. 



,, much curved . . 3. 



3. Lines of forewings forming triangular costal spots 



4. lienigialis. 

 ,, not forming costal spots 3. farinalis. 



1. P. glaucinalis, L. 21-29 mm. Forewings brownish-grey, 

 on costa purplish ; median part of costa dotted with yellow ; 

 lines pale ochreous, nearly straight, 



stronger and yellower on costa. 

 Hindwings grey ; two fine whitish 

 approximated lines, first twice sub- 

 angulated, second curved. 



England to York, E. Ireland, 

 rather local ; C. Europe, C. Asia, 

 Japan ; 6, 7. Larva blackish-green, 

 lighter laterally ; head and plate of 

 2 lighter : in silken galleries amongst 

 decaying leaves and twigs of birch ; 

 3-5. 



2. P. costalis, F. (Jimbrialis, 

 Schiff.) 17-20 mm. Forewings 



purple, sometimes blackish - sprin- Neuration of Pyraiis farinalis. 

 kled; median part of costa dotted with yellow ; lines yellow, 

 nearly straight, forming large spots on costa ; a terminal line 

 and cilia yellow. Hindwings as forewings, but lines much 

 nearer together, irregularly curved, not forming costal 

 spots. 



England to York, local; C. and S. Europe, WC. and N. 

 Asia, N. Africa, N. America ; 7, 8. 



3. P. farinalis, L. 20-28 mm. Forewings purple -brown, 

 towards apex more reddish-brown ; median band more or less 

 wholly suffused with pale or sometimes deep ochreous, especi- 

 ally towards costa ; median part of costa dotted with white ; 

 lines whitish, first obtusely angulated, second with middle 

 third strongly curved outwards, thicker towards costa. Hind- 

 wings dark grey mixed with whitish, especially before termen ; 

 lines whitish, as in forewings, but much more approximated, 

 especially on lower half. 



Britain to Caledonian Canal, Ireland, common ; Europe, N. 

 and C. Asia, Japan, N. Africa, N. America, Australia, New 

 Zealand (probably Central Asiatic in origin, elsewhere intro- 

 duced but now fully established) ; 6-8. Larva ochreous-whitish, 

 towards extremities dusky-tinged ; dorsal line darker ; head 



