226 



THE STUDY OF INSECTS 



( )n the fore wings there are two transverse rows of pale gray spots, and a 

 single spot near the outer margin between veins M 3 and Cm. (This spot 

 was indistinct in the specimen figured.) The moth is common in mid- 

 summer. The larva feeds on violet. 



The chain-dotted geometer, CingUia catenaria. — This moth has 

 snow-white wings marked with zigzag lines and with dots of black as 

 sh< >wn in Figure 392. The head is ochreous-yellow in front; and the thorax 

 is yellowish at the base of the patagia. The moth flies during September 

 and October. The larva feeds on various shrubs and trees. The pupa state 

 is passed in a slight but well-formed web of yellow threads, which is made 

 between twigs or leaves, and through which the pupa can be seen. 



Fig. 392. — CingUia catenaria. 



Fig. 393. — Nepytia semidusaria. 



The evergreen nepytia, Nepytia semidusaria. — This beautiful moth 

 (Fig. 393) is common in the vicinity of pines, spruce, fir, and hemlock 

 during August and September. It varies from a smoky-ash color to 



almost snow- 

 white; the wings 

 are marked with 

 black. The larva 

 feeds on the 

 leaves of conifers . 

 It is reddish-yel- 

 low above, with 

 lateral yellow 

 bands below, 

 while on each side 

 are two pairs of 

 black hair-lines. 

 There are black 

 spots above on 

 the segments. 

 When full-grown 

 it is a little more 

 than 1 inch long 

 and spins a loose 

 cocoon among 

 the leaves. The 

 chrysalid is green 

 with whit e 

 stripes and is 



Fig. 394. — Erannis liliaria. Verv OrettV 



The lime-tree winter-moth, Erannis tiliaria. — This species (Fig. 394) 



