224 NOTODONTINA [EUCHOECA 



wings whitish, dusted with dark fuscous, with brownish striae ; 

 edges of median band partly blackish, posterior prominent above 

 and in middle, the two following striae ferruginous on costal 

 half, thickened ; a blackish discal dot. Hindwings whitish- 

 grey, with darker striae. 



Sussex, W. and N. England, local ; C. Europe ; 6, 7. Larva 

 pale yellowish-green ; a crimson-brown dorsal patch on 2-4, cut 

 by a yellow central line ; subdorsal crimson-brown blotches on 

 6-8 ; on 1 2 and 1 3 a rosy dorsal brown-marked stripe ; mark- 

 ings variable in intensity and sometimes absent ; head with 

 two crimson-brown streaks : on elm ; 8, 9. 



20. ASTHENA, Hb. 



Face smooth, flat. Antennae in $ shortly ciliated. Palpi 

 short, slender, loosely scaled. Forewings : areole double. 

 Hindwings : 8 anastomosing with cell to beyond middle. 



A genus of a few widely scattered species, most numerous in 

 the Australian region. 



1. Forewings unicolorous . . .2. murinata. 



with distinct striae . . .2. 



2. Forewings clear white . . .1. candidata. 



sprinkled with grey or fuscous 3. dilutata. 



1. A. candidata, Schiff. 17-20 mm. Forewings white ; about 

 eight light greyish-ochreous striae; posterior edge of median 

 band twice sinuate ; a grey discal dot. Hindwings as fore wings, 

 but without striae towards base. 



England, Argyll, Arran, common ; C. Europe, Asia Minor ; 

 5, 6. Larva pale yellowish-green, with pale tubercles bearing 

 long black hairs ; 3 and 4 pinkish above, 2 and 5-9 with crimson 

 bisected dorsal marks, sometimes partly absent; 10-13 with a 

 crimson dorsal line ; head pale, with two black rings : on hazel ; 

 6,7. 



2. A. murinata, Sc. (euphorbiata, F.) 17-21 mm. Fore- 

 wings light grey-brownish or greyish-ochreous, unicolorous. 

 Hindwings as forewings, or slightly greyer. 



England to York, rather common ; C. Europe, W. Asia'; 6. 

 Larva green or dark grey ; dorsal line darker, interrupted ; 

 subdorsal and lateral series of pale or yellow spots ; head fer- 

 ruginous : on Euphorbia ; 8, 9. 



3. A. dilutata, Bkh. (filiyrammaria, HS. ; autumnaria, Gn.) 

 25-36 mm. Forewings grey -whitish, sprinkled and striated 

 with grey or fuscous ; the six fasciae marked with darker 

 striae, fourth angulated above middle, third and fourth some- 



