LEPIDOPTERA. 
279 
when full grown. It spins a rather dense, spindle-shaped 
cocoon within a cluster of leaves. The moth (Fig. 328) is 
ochre-yellow with a reddish tinge. The wings are shaded 
towards the outer margin with brown, and are thickly spotted 
with small brown dots. 
The Currant Span-worm, Diasticiis ribearia (Di-as-tic'tis 
rib-e-a'ri-a).—There are several species of insects that are 
popularly known as currant- 
worms. The most common 
of these are larvae of saw- 
flies, which can be easily 
recognized by the large 
number of prolegs with 
which the abdomen is fur¬ 
nished. In addition to the 
saw-flies there is a yellow 
looper spotted with black, which often appears in such great 
numbers on currant and gooseberry bushes as to suddenly 
strip them of their foliage. This larva has been named the 
Currant or Gooseberry Span-worm. When full grown it 
measures about one inch in length, and is of a bright yellow 
color, with white lines on the sides and with numerous black 
spots and round dots. It has only four prolegs. There is 
only a single brood; the larva matures in May or June; the 
pupa state lasts about a fortnight; the moth flies during the 
summer months and oviposits on the twigs of the plants ; 
and the eggs remain un¬ 
hatched till the following 
spring. The moth (Fig. 
329) is pale yellow, with 
the wings marked by ir¬ 
regular dusky spots, which 
sometimes form one or two 
indefinite bands across them. 
The Chain-dotted Geom¬ 
eter, Cingilia catenaria (Cin-gil'i-a cat-e-na'ri-a).—This moth 
Fig. 330. —Cingilia catenaria. 
Fig. 329 .—Diasticiis ribearia. 
