24 LLOYD'S NATURAL HISTORY. 



Gortyna flavago, Treitschke, Schmett. Eur. v. (2), p. 335 

 (1825); Stephens, 111. Brit. Ent. Haust iii. p. 70 (1829); 

 Kirby, Eur. Butterflies and Moths, p. 181, pi. 34, figs. 5, 

 5 a (1880) ; Buckler, Larvae of Brit. Lepid. iv. pi. 62, 

 figs, i-i c (1891). 



The Frosted Orange Moth expands from an inch and a 

 quarter to nearly an inch and a half. The fore-wings are rich 

 yellow as far as the half-line, beyond which is a yellow dot, and 

 the remainder of the ground-colour up to the first transverse 

 line is reddish -brown. The central portion of the wings is 

 more or less yellow, marbled with reddish-brown, and the 

 upper stigmata are distinct and surrounded with brown, and 

 sometimes united on the median nervure ; there is also a 

 claviform stigma. There is a brown band near the hind 

 margin, from which it is separated by a more or less yellow 

 band, undulated on the inner side. The fringes are long, and 

 greyish-brown. The hind-wings are glossy whitish, with 

 a dusky crescent-shaped mark on the disc, and an indis- 

 tinct band posteriorly. The fringes are ashy-brown. The 

 thorax is reddish-brown, tinged here and there with deep 

 ochre-yellow, and with a raised crest. The abdomen is more 

 greyish-yellow, with darker incisions. The larva feeds in the 

 stems of Burdock (Arctium lappd) and other thick-stemmed 

 plants, such as Verbascum thapsus, Scrophularia aquatica, 

 Spear Thistle, &c. It feeds on the pith, and there is a 

 hole in the side of the stem through which its excrement is 

 passed, and out of which the moth eventually emerges. It is 

 smooth, dull white, tinged with dark reddish on the back, 

 especially on the fifth, sixth, and seventh segments. The 

 head is yellowish-brown, and there is a dark brown collar and 

 a yellow median line. On the third segment are two large 

 black tubercles, with four smaller ones behind them, and on 

 the fourth segment four black tubercles arranged transversely, 



