ATTACKING THE LEAVES. 209 



The insect is a rare one, and not likely ever to occur in 

 sufficient numbers to do much injury. 



No. 112. The lo Emperor-moth. 



Hyperchiria lo (Linn.). 



This very beautiful insect appears in June and July. It 

 remains inactive during the day, but flies about after dusk. 

 The sexes differ in both size and color, the male (Fig. 215) 



FIG. 215. 



being the smaller. It is of a deep-yellow color, with purplish- 

 brown markings; on the fore wings are two oblique wavy 

 lines near the outer margin, a zigzag line near the base, and 

 other blackish dots and markings. The hind wings are of 

 a deeper ochre-yellow, and are shaded with purple next the 

 body ; within the hind margin is a curved purplish band, 

 and inside this a smaller one of a dark-purplish shade, while 

 about the middle of the wing there is a large, round, blue 

 spot with a whitish centre and enclosed in a broad ring of 

 brownish black. The antennae of the male are beautifully 

 feathered, and the wings measure, when expanded, about two 

 and a half inches across. The female (Fig. 216) measures 

 from three to three and a half inches. The antennae are but 

 very slightly feathered; the fore wings are purplish brown 

 mingled with gray, the wavy lines crossing the wings being 

 also gray. There is a brown spot about the middle, margined 



14 



