240 NOTODONTINA [EOIS 



9 ; subdorsal blackish, interrupted ; spiracular pale ochreous ; 

 a whitish dorsal spot on 10 : on Polygonum aviculare (?) ; 8-5. 



17. E. bisetata, Hufn. 19-22 mm. Head blackish, fillet 

 white, collar whitish-ochreous. Antennae in S filiform, cilia 1. 

 Posterior tarsi in $ J, rough-scaled, tibial tuft large. Forewings 

 whitish-ochreous, more or less sprinkled with dark fuscous ; 

 first and median lines grey, irregular, second dark grey, waved, 

 margins of subterminal grey, anterior rather thick, irregular ; 

 a black discal dot before median. Hindwings as forewings, but 

 first line absent, discal dot beyond median. 



Britain to Ross, Ireland, common; C. Europe, W. and N. 

 Asia; 6, 7. Larva brown, 9-13 ochreous; 5-9 with dark brown 

 dorsal V-shaped mark ; dorsal line pale, edged with dark brown, 

 more strongly on 10-13 : on Taraxacum, Cardamine, etc. ; 8-5. 



2. STERRHA, Hb. 



Antennae in $ serrate, ciliated with fascicles. Posterior tibiae 

 in $ slender, in <$ and $ with end -spurs only. Hindwings: 6 

 and 7 stalked. 



A genus of moderate size, at present not recognised outside 

 the European region ; only one species reaches Britain. 



1. S. ochrata, Sc. 19-21 mm. Head ochreous, face fuscous. 

 Forewings rather deep ochreous; lines regular, first, median, 

 and margins of subterminal darker, second fuscous. Hindwings 

 as forewings, but first line absent, second more sinuate ; termen 

 rounded. 



Kent, Surrey, Essex, local ; C. and S. Europe, WO. Asia to 

 Turkestan; 6. 



3. LEPTOMERIS, Hb. 



Antennae in c ciliated with fascicles. Posterior tibiae in c? 

 dilated, without spurs, in $ with all spurs present. Hindwings : 

 6 and 7 sometimes stalked (variable in the same species). 



A large genus of almost universal distribution. Larva more 

 uniformly cylindrical and slender than in Eois, head rounder. 



1. Face mixed throughout with white . 9. immorata. 



wholly black or dark fuscous . .2. 



2. Wings ochreous or reddish . . .3. 



white or whitish-ochreous . . .4. 



3. Termen of hindwings angulated . . 5. imitaria. 



rounded . .10. rubiginata. 



4. Discal dot of hindwings before median line 8. strigaria. 



on or beyond median line 5. 



