Geometridae 
The insect flies in Colorado and adjoining States. 
(4) Macaria praeatomata Haworth, Plate XLIII, Fig. 40, 2. 
Syn. consepta Walker. 
Not a rare species in the Atlantic States. 
(5) Macaria glomeraria Grote, Plate XLIV, Fig. 3, ?. 
The range of this species is the same as that of the preceding. 
Genus CYMATOPHORA Hiibner 
(1) Cymatophora ribearia Fitch, Plate XLIII, Fig. 45, ?. 
(The Gooseberry Span-worm.) 
Syn. sigmaria Guenee; annisaria Walker; aniusaria Walker; grossulariata 
Saunders. 
The gooseberry and the currant are subject in the United 
States and Canada to the attack of various insects, which do a 
great deal of damage to them. One of the most frequent causes 
of injury to these plants are the larvae of 
the Gooseberry Span-worm, which is 
represented in Fig. 204. It is, when 
mature, about an inch in length, bright 
yellow in color, marked with dark-brown 
spots upon the segments. The eggs, 
which are laid by the mature female at 
SXo the end of J une or the be S innin g of July, 
are very minute, but upon examination 
under the microscope are seen to be beautifully ornamented with 
deep pits or sculpturings. They are pale bluish-green. The eggs 
are attached by the female to the stems and branches of the plants, 
not far from the ground. Being almost 
microscopic in size, they readily elude 
observation, and this, it is known, accounts 
for the fact that the insects are often, by the 
transplantation of the shrubs, transferred 
from one locality to another in which they 
have been previously unknown. The eggs, 
having been laid, remain through the sum¬ 
mer and fall and all of the succeeding winter 
in a dormant state, and do not hatch until 
early in the following spring, when the 
leaves are beginning to put out upon the bushes. As soon as the 
340 
Fig. 203. — Egg of 
Gooseberry Span-worm. 
a , enlarged ; b , natural 
size. (After Riley.) 
