acalla] TORTRICIDAE 521 



17. Teniien of forewings moderately (oblique . .18. 



,, ,, little oblique . .19. 



18. Forewings narrowed anteriorly . . 10. maccana. 



„ obl(jng . . 22. caledoniana. 



19. Forewings without tufts . . 18. lorquiniana. 



with slight tufts . . .20. 



20. Ternien of forewings hardly sinuate . .21. 



,, ,, distinctly sinuate . . 22. 



21. Forewings with variable markings, costa usually 



whitish . . .4. rnfana. 



„ without defined markings, costa not 



whitish . . .11. lipsiana. 



22. Forewings with ground-colour grey-whitisli 9. mixtmia. 



,, ,, ,, not whitish . 23. 



23. Species smaller ; costal blotch paler-centred 



23. asjKrsana. 

 ,, larger ; costal blotch forming three spots 



21. ferrugana. 



1. A. cristana, F. 18-21 mm. Thorax with strong longi- 

 tudinal crest. Forewings reddish -ochreoiis to dark brown, 

 sometimes bicoloi'ous ; a very large sometimes white scale -tuft 

 in middle of disc ; sometimes a white or pale ochreous dorsal 

 streak, or an orange central longitudinal streak • sometimes two 

 fascia-like whitish streaks from costa converging to middle of 

 disc. Hindwings grey, apex darker. 



S. England to Hereford and Norfolk, Ireland, local ; C. 

 Europe ; 8-5. Larva on rose and hawtliorn ; 6, 7. 



2. A. hastiana, L. 18-21 mm. Thorax with strong longi- 

 tudinal crest. Forewings oblong, grey, ochreous-brown, or dark 

 purplish-fuscous; tufts slight; veins sometimes pale, seldom 

 broadly whitish-ochreous ; edge of basal patch sometimes dark- 

 marked ; central fascia and costal patch confluent, darker or 

 red-brown, often obsolete ; sometimes a white subcostal streak 

 edged beneath with blackish, or an ochreous and ferruginous 

 median longitudinal streak, or dorsum broadly whitish-ochreous. 

 Hindwings light grey, somewhat darker-strigulated. 



Britain to the Orkneys, N. and C. Ireland, rather local ; 

 Europe, N. Asia, N. America ; 9-5. Larva pale green ; head 

 and plate of 2 often brownish-tinged, sometimes black : on 

 Salix ; 7-9. Occasionally a partial early brood of larvae in 5 

 and imagos in 6. 



3. A. umbrana, lib. 18-21 mm Thorax with strong longi- 

 tudinal crest. Forewings suboblong, light brown ; a large scale- 



