collix] HYDRIOMENIDAK 



8. Colux, Gn. 



Face with short cone of scales. Antennae in $ ciliated. 

 Palpi rough -scaled. Abdomen slightly crested throughout. 

 Forewings : areolc double. Hindwings in S with long sub- 

 costal hair-pencil from base on upper surface, lying beneath 

 forewing ; 8 anastomosing with cell to beyond middle. 



Only the single species is known ; it is probably correlated 

 with or derived from the preceding. 



1 . 0. sparsaria, lib. 22-24 mm. Forewings light brownish- 

 grey, with indistinct darker irregular striae, dark fuscous on 

 costa ; veins marked with blackish and whitish except within 

 median band ; subterminal line whitish, forming a white 

 tornal dot ; a black discal dot, connected with costa by a 

 dark fuscous streak. Hindwings as forewings, but without 

 discal dot or costal darker markings ; termen dentate. 



Hants, Suffolk, Norfolk, Cambridge, Yoi-k, Cheshire, local ; 

 C. Europe ; 6. Larva pale green ; dorsal line dark green ; sub- 

 dorsal and lateral whitish ; spiracular broad, white : on Lysi- 

 machia vulgaris ; 8, 9. 



9. Eucestia, lib. 



Face forming an obtuse prominence. Antennae in (? 

 ciliated. Palpi rough-scaled. Anterior tibiae with horny 

 apical hook. Forewings: areolc double. Hindwings in <J with 

 transparent basal subdorsal spot, bordered beneath by short 

 membranous bladdery ridge, forming small pocket on lower 

 surface; 3 and 4 sometimes stalked in (J, 8 anastomosing with 

 cell to beyond middle or in c? sometimes connected by bar 

 beyond middle only. 



A genus of some extent, ranging through Europe and Asia ; 

 derived from Uydriomena. 



1. Forewings witli pale subcostal streak from near 



base . . .1. sjiartiata. 



,, without such streak . . .2. 



2. Edges of median band distinct . . .3. 



„ „ „ obsolete . . 3. griseata. 



3. Fourth fascia angulated above middle . 4. plagiata. 



„ „ not angulated above middle 2. rufata. 



1. E. spartiata, Fuesl. 32-35 mm. Forewings elongate, 

 rather dark brown ; a median series of three blotches outlined 

 with brownish -ochreous, discal one including a whitish dash 

 and dark fuscous spot; a whitish or brownish -ochreous sub- 

 costal streak from near base to apex ; subterminal line whitish, 



