260 



NOTODONTINA 



[ECTROPIS 



cesses on each side of each joint, emitting strong fascicles of 

 cilia. Palpi rough -scaled. Thorax hairy beneath. Femora 



glabrous; posterior tibiae in < 

 sometimes dilated. Forewings 

 in # with fovea; 10 sometimes 

 out of 9 or absent, sometimes 

 connected with 9, 11 sometimes 

 out of 9 or 10, sometimes anas- 

 tomosing with 12. 



A small genus, but very 

 widely distributed ; derived from 

 Selidosema. 



Forewing of Ectropis "biundularia. 



1. Forewings with a white median subterminal spot 



1. luridata. 

 without such spot . . .2. 



2. Discal mark of forewings distinct . . 3. 



absent . . 3. biundularia. 



3. First line preceded by a dark shade . 4. consonaria. 



,, not preceded by a dark shade . 2. punctularia. 



1. E. luridata, Bkh. (extersaria, Hb.) 29-33 mm. Head 

 fuscous-whitish, mixed with dark fuscous. Forewings whitish- 

 fuscous, much strigulated with dark fuscous ; first, median, and 

 second lines sinuate, dark fuscous, blackish-marked, second end- 

 ing in a whitish dorsal spot ; subterminal pale, waved, anteriorly 

 dark-margined, marked with clear white central spot ; a blackish 

 discal mark. Hindwings as forewings, but lines more indistinct, 

 without white spots, first absent ; discal dot obscure. 



S. England to Hereford and Norfolk, Lancashire, rather 

 common ; C. Europe ; 6. Larva pale grey, clouded with 

 reddish-brown : on birch ; 8, 9. 



2. E. punctularia, Hb. 25-29 mm. Head white mixed with 

 dark fuscous. Forewings whitish, sprinkled with fuscous and 

 dark fuscous ; first, median, and second lines irregular, fuscous, 

 darker-marked, stronger on costa ; subterminal whitish, waved, 

 anteriorly fuscous-margined; a dark fuscous discal dot on 

 median. Hindwings as forewings, but lines more indistinct, 

 first absent, discal dot beyond median. 



England, Argyll, E. and S. Ireland, common; N. and C. 

 Europe, N. Asia; 5, 6. Larva wrinkled, green; dorsal line 

 yellowish, whitish - margined ; subdorsal and two fine lateral 

 lines yellowish-white ; incisions yellow ; head yellow-green : on 

 birch ; 7, 8. 



3. E. biundularia, Bkh. (crepuscularia, Hb.; laricaria, 



