104 THE ENTOMOLOGIST. 



grey. Head and thorax whitish grey. Abdominal juncture whitish. July 

 and August. 



Larva. — Length, 6-7 lines, slightly attenuated posteriorly. Head a 

 little smaller than 2nd segment, pale yellowish brown ; crown freckled with 

 olive-brown ; a black spot on each cheek : mandibles pale reddish brown. 

 Ground colour yellowish green. Dorsal stripe from 4th to 13th segments 

 broad pinkish, its outer edges of a deeper tint, approaching violet, and 

 narrowly bordered with whitish ; there is also a yellowish median line, 

 bordered with dark green ; this line commences on the 3rd segment. The 

 pinkish dorsal stripe is not assumed until the last moult, but the medio- 

 dorsal line of the adult is present from its earliest stage. Two dorsal rows 

 of tubercles (four on each segment) are situated on the outer edge of dorsal 

 stripe, pinkish, each with a tuft of moderately long pale grey hairs ; sub- 

 dorsal, one whitish wart with a tuft of short whitish hairs on the middle of 

 each segment, and a smaller one with a single whitish hair a little below 

 and situated on the posterior edge of segment ; spiracular area has two 

 warts on each segment, the anterior of which is semitransparent ; it is also 

 larger than its fellow, and the hairs emitted therefrom are longer. All the 

 egs are semitransparent, with a green tinge. Anal claspers tinged with pale 

 brown. Food, Inula dysenterica. In the terminal shoots when young, 

 after the manner of a Tortrix larva ; later, on the upper surface of the 

 leaves. Occurs in June. 



Pupa. — Upper part hairy like the larva, colour whitish, much streaked 

 with dark olive-green laterally ; dorsal line whitish, finely bordered with 

 dark grey ; wing-cases yellowish green ; antennae and legs showing up 

 darker; a pinkish tinge just above the wing-cases. July. 



Plate IT., fig. 2, fleabane [Inula dysenterica); 2a, larva; 2b, pupa; 

 2 c, imago of (E. lithodactylus. 



When fleabane {Inula dysenterica) is making its appearance the 

 unfolding and proper development of some of the shoots, especially 

 terminal ones, appear impeded ; examination will in all probability 

 show the check to be due to the presence of young (E. lithodactylus 

 larvae. This is the best time to secure them, as they are now 

 almost certain to be free from parasites. Later, the larvae may 

 be found on the upper sides of the expanded leaves, if looked for 

 just after dark. Patches of the fleshy part of the leaf are eaten 

 away, exposing the skeleton, and rendering the plants infested 

 very conspicuous objects. This species is said to feed also upon 

 Conyza sqiiarrosa in a like manner. 



