244 



FOREST ENTOMOLOGY. 



Smerinthus ocellatus, Linn. (Eyed Hawk-Moth). 



The life-history and habits of this moth very ranch resemble the 

 preceding species, and the larva is said to generally feed on the 

 willow and apple, though I have found it feeding on the leaves of 

 the black Italian poplar. 



The moth, fig. 224, is more beautiful than the preceding species, 

 and receives its specific name in consequence of having a large eye-like 

 spot on each of the hind wings. The fore wings present a beautiful, 



Fig. 224. Smerinthus ocellatus {Eyed Hawk-Moth). 



glossy, velvety appearance, which renders the veins less conspicuous 

 than in S. populi. The hind wings are of a delicate rosy tint. 



Trochilium (Sesia) bembeciformis, Hub. (Hornet 

 Clear-wing of the osier). 



The larvse of this species are generally found in the base of stems of 

 the goat willow (Salix caprea). The holes which show whence the 

 perfect insects have escaped are often the first conspicuous indica- 

 tion of the damage. Such holes, however, are not always a sign 

 that all the moths have escaped, for if a few cuts be taken from such 

 stems and placed in a box, say in April or May, we may anticipate 

 moths emerging at the proper time for two consecutive years. The 

 dates on which I found them appearing in Northumberland were 

 July 10, 1901, and July 10-14, 1902. Fig. 225 shows a longitudinal 

 gallery, and cross section of several galleries. 



The larva is whitish, a little over an inch in length ; head brown, 

 tapering considerably behind ; legs dark-brown and small. 



