172 LLOYDS NATURAL HISTORY. 



Lithosia irrona^ Ochsenheimer, Schmett. Eur. iii. p, 148 



(1810). 

 Calli7norpha irrorata, Godart, Lepid. Fiance, iii. p. 392, pi. 40, 



figs. 3, 4(1822). 

 Setina irrorella, Stephens, 111. Brit. Ent. Haust. ii'. p. 99, pi. 17, 



fig. I (1829); Kirby, Eur. Butterflies and Moths, p. 96, 



pi. 22, fig. 3 (1879) ; Barrett, Lepid. of Biit. Isl. ii. p. 204, 



pi. 66, figs. 4, 4^5 ^ (1894). 

 Fhilea irrorella, Buckler, Larvae of Brit. Lepid. iii. p. 36, pi. 42, 



fig. 4 (1889). 

 This is a widely distributed European and Asiatic species, 

 and expands about ^ to i )^ inch. 



The colour is ochre-yellow or dull orange. The fore-wings 

 have three rows of black dots, one before the middle, the 

 second rather beyond the middle, and the third near the hind 



The Dew Moth. 



margin. The number of spots in this last row varies from oni 

 to six. The hind-wings have one or two black dots towards 

 the hind margin anteriorly. They are paler than the fore- 

 wings. 



The larva is black with obhquely-placed quadrilateral yellow 

 spots on the back, and elongated spots of the same colour on 

 the sides. It feeds' on lichens among stones. 



The pupa is reddish-brown, and is enclosed in a slight 

 cocoon. 



