462 TORTRICINA [EUCOSMA 



brown mixed with dark ashy-fuscous and marked with black, 

 slightly whitish-sprinkled, space more whitish towards costa, 

 posterior edge of fascia slightly concave, in middle abruptly 

 indented ; a subapical group of several black dots. Hindwings 

 grey, darker posteriorly. 



England, local ; N. and NO. Europe, N. America ; 6. 

 Larva greyish - green ; dots black ; head black : on Salix 

 caprea; 5. 



8. E. sororculana, Zett. (praelongana, Gn.) 17-20 mm. 

 Forewings narrower than in E. betuletana, white, sometimes 

 partly ochreous- tinged, posteriorly with thick grey striae ; 

 , basal patch, central fascia, and included space brown much 

 spotted with black, somewhat mixed with white, especially on 

 space towards costa, posterior edge of fascia slightly concave, 

 with two prominences on lower half ; a brown terminal streak 

 from apex, preceded by several black dots. Hindwings light 

 grey, darker terminally. 



Britain to Sutherland, S. Ireland, local ; N. and C. Europe ; 

 5, 6. Larva on birch ; 8. 



9. E. variegana, Hb. (cynosbatella, Wilk.) 16-21 mm. 

 Forewings ochreous - white, towards termen clouded with 

 ochreous - grey, with faint posterior silvery - metallic striae ; 

 basal patch, central fascia, and included space brown mixed 

 with dark leaden-grey and spotted with black, slightly whitish- 

 sprinkled, posterior edge of fascia with a triangular projection 

 below middle, and followed in middle by two black dots. 

 Hindwings grey, darker terminally. 



Britain to the Clyde, E. Ireland, common ; C. and S. Europe, 

 Asia Minor ; 6, 7. Larva dark olive-green ; tubercular dots, 

 head, and plate of 2 black : on hawthorn, blackthorn, and 

 cherry ; 5. 



10. E. . ochroleucana, Hb. 18-21 mm. Forewings whitish- 

 ochreous, faintly pink-tinged, margins posteriorly grey-spotted ; 

 basal patch, central fascia, and included space brown mixed 

 with dark ashy-grey and black, space strigulated with whitish- 

 ochreous on costa and fold, posterior edge of fascia slightly 

 convex, indented above and below middle ; two or more black 

 dots and a grey spot between middle of fascia and termen. 

 Hindwings grey, terminally darker. 



Britain to Ross, N. Ireland, rather common, scarcer north- 

 wards ; C. Europe ; 6, 7. Larva dark green ; dorsal line 

 darker ; dots black, pale - ringed ; head and plate of 2 dark 

 brown : on rose and apple ; 5. 



