DIACRISIA] ARCTIADAE 41 



light yellowish or ochreous-whitish ; a black discal spot ; some- 

 times three or four Bubterminal black dots. 



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

 N. Asia; 5, 6. Larva grey or brown, hairs brown; dorsal line 

 sometimes pale or whitish ; spiracular whitish, spiracles white ; 

 head grey-yellowish : on Jtumex, Plantago, Mentha, etc.; 7-9. 



5. D. russula, L. 35-46 mm. ^ . Forewings dull yellow, 

 dorsum suffused with crimson ; an 8 -shaped crimson discal 

 spot, mixed with dark grey ; costal edge posteriorly and cilia 

 light crimson. Hindwings grey-whitish or ochreous-whitish ; a 

 blackish sinuate discal spot, and subterininal band ; cilia 

 crimson. 



$ . Forewings deep orange ; veins, costa, dorsum, discal 

 spot, and cilia ferruginous. Hindwings orange ; basal half 

 blackish, confluent with large black discal spot, and dorsally 

 with a blackish subterminal band. 



Britain to Ross, somewhat locally common ; Europe, WC. 

 and N. Asia ; 6. Larva brown, tubercles blackish, hairs 

 brown ; dorsal line ochreous or orange ; spiracles ochreous or 

 white ; head dark brown : on Hieracium, Erica, Scabiosa, etc. ; 

 8-5. 



20. ARCTIA, Schrk. 



Characters of Diacrisia, but 10 rising separate, anastomosing 

 or connected with 9. 



A rather limited genus, principally characteristic of northern 

 temperate regions. Larva with tufts of long hairs. 



1. Hindwings red .... 3. caja. 



orange . . . .2. 



2. Base of hindwings black or black-marked 1. plantaginis. 



not black-marked . 2. villica. 



1. A. plantaginis, L. 33-36 mm. Forewings black ; costa an- 

 teriorly orange ; two anterior costal spots, a broad irregular 

 streak along fold, and two posterior fasciae anastomosing in 

 middle pale ochreous-yellow, sometimes variably interrupted or 

 confluent ; cilia orange. Hindwings orange ; basal area black 

 or with two black longitudinal streaks, upper reaching a black 

 discal spot ; two or three posterior black spots ; a terminal 

 series of partially connected black spots. 



Britain to the Shetlands, Ireland, common, somewhat local ; 

 N. and C. Europe, N. Asia ; 5, 6. Larva black ; hairs black or 

 dark brown, on 5-7 bright brown-reddish, sometimes some on 

 sides reddish ; head black : on Myosotis, Plantago, etc. ; 8-4-. 



