ORTHOSIA. 51 



GENUS ORTHOSIA. 



Orthosia, Ochsenheimer, Schmett. Eur. iv. p. 79 (1816); 

 Treitschke, Schmett. Eur. v. (2), p. 201 (1825) ; Guen^e, 

 Spec. G^n. Lepid. Noct. i. p. 358 (1852). 



Orthosia much resembles Cuphanoa, but the antennae of the 

 males are pubescent, and simple, or occasionally serrated. 

 The third joint of the palpi is invisible, being entirely concealed 

 among the hairs of the second. The legs are longer and less 

 hairy than in the last genus. The lines and stigmata of the 

 fore-wings are well marked, and the wings are much sloped 

 when the moths are at rest. 



The larvae are stout and cylindrical, velvety, and marbled, 

 with only the stigmatal line distinctly marked. They feed on 

 trees and low plants, and hide themselves during the day under 

 bark, or under bushes. 



The species of Orthosia are found in summer and autumn, 

 instead of in spring. They are more prettily marked than 

 those of Cuphanoa. 



THE YELLOW-LINE QUAKER. ORTHOSIA MACILENTA. 



Nodua macilenta, Hiibner, Eur. Schmett. iv. fig. 418 (1804?). 

 Nodua flavilinea, Haworth, Lepid. Brit. p. 243 (1809). 

 Orthosia Jlavi/inea, Stephens, 111. Brit. Ent. Haust. ii. p. 148, 



pi. 19, fig. 2 (1829). 

 Orthosia macilenta, Treitschke, Schmett. Eur. v. (2), p. 215 



(1825) ; Stephens, 111. Brit. Ent. Haust. iii. p. 68 (1829) ; 



Kirby, Eur. Butterflies and Moths, p. 176 (1880); 



Buckler, Larvae of Brit. Lepid. v. pi. 92, figs. 6, 6 a (1893). 



This is a common species in Central Europe. It expands 

 nearly an inch and a half. 



The fore-wings are reddish-yellow or pale fulvous, usually 



E 2 



