2 SO 
THE STUDY OF INSECTS. 
has snow-white wings marked with zigzag lines and with 
dots of black as shown in Fig. 330. 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 formed between twigs or leaves, and 
through which the pupa can be seen. 
The Evergreen Cleora, Cleora setniclusaria (Cle'o-ra 
sem-i-clu-sa'ri-a).—This beautiful moth (Fig. 331) 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 yellow 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 an inch long and spins a loose cocoon 
among the leaves. The chrysalid is green with white 
stripes and is very pretty. 
The Pepper-and-salt Currant-moth, Biston cognataria 
(Bis'ton cog - na - ta'ri - a). — This 
moth (Fig. 332) differs remark¬ 
ably in appearance from most 
Geometrids, the body being 
stouter, and the wings appearing 
heavier. It can be easily recog¬ 
nized by its evenly distributed 
pepper-and-salt markings. The FlG * 332 .—Biston cognatana. 
larva feeds on various plants, but is found most often on 
currant. 
The Lime-tree Winter-moth, Erannis tiliaria (E-ran'nis 
