522 TORTRICINA [acalla 



tuft on submediau fold before middle, and some smaller ones 

 posteriorly ; a darker or blackish median longitudinal streak to 

 apex, marked with a pale spot in middle, somewhat branched 

 posteriorly. Hindwings light grey. 



Sussex, Surrey, Hants, Ijancashire to Northimiberland, 

 local ; N. and C. Europe ; 8-10. Larva on hawthorn ; 6, 7. 



4. A. rufana, Schiff. {motumnana, Hb.) 18-21 mm. Thorax 

 with slight posterior crest. Forewings suboblong, light yellow- 

 ochreous to dark grey ; tufts slight ; costa usually suffused 

 with whitish from base to beyond middle ; sometimes a grey or 

 fuscous triangular blotch on costa posteriorly, and a dorsal spot 

 towards base ; sometimes a ferruginous central longitudinal 

 streak to apex. Hindwings pale grey, apex darker. 



Britain to the Clyde, E. Ireland, local; C. Europe; 8-10. 

 Larva dark grey, blackish, or blackish-green ; head black or 

 dark brown ; plate of 2 black ; on Myrica, Salix, and white 

 poplar ; 6-8. 



5. A. sponsana, F. {favillaceana, Hb.) 20-22 mm. Thorax 

 with slight posterior crest. Forewings oblong, grey or whitish- 

 grey, faintly darker-striated ; tufts slight ; base and scattered 

 striae sometimes ferruginous ; usually a large darker or 

 ferruginous triangular blotch on costa posteriorly. Hindwings 

 light grey, apex darker. 



Britain to Caledonian Canal, E. Ireland, common ; C. Europe ; 

 8-10. Larva green : on beech ; 6, 7. 



6. A. literana, L. 18-20 mm. Thorax with strong posterior 

 crest. Forewings oblong, pale green, sometimes mixed or 

 strigulated with grey ; tufts numerous : usually some irregular 

 scattered black marks ; sometimes with ochreous spots or 

 suffusions in disc, or suffused blackish spots. Hindwings grey, 

 darker towards apex. 



Britain to the Clyde, S. Ireland, rather local ; C. Europe, N. 

 Asia ; 8-4. Larva on oak (?) ; 6. 



7. A. niveana, F. (treveriana, Hb. ; scotana, AYilk.) 18-21 

 mm. Forewings oblong, grey-whitish, more or less strigulated 

 and spotted with grey towards margins, sometimes reddish- 

 tinged ; tufts numerous ; some scattered black scales ; usually 

 two darker sometimes black -marked spots on costa before and 

 beyond middle, and a third in middle of disc ; sometimes a 

 reddish dorsal spot towards base. Hindwings pale grey, darker 

 towards apex. 



Perth to Ross, local ; C. Europe, N. America ; 9-4. Larva 

 on birch ; 6, 7. 



