84 
inch. While growing they, at first, skeletonize the leaves; 
later they eat the entire leaf, with the exception of the ribs, 
and at last, they devour immense quantities of them, often 
completely stripping the bushes of their foliage. If this is 
repeated year after year, the plants produce less and less fruit 
and eventually die. The larve now decend to the ground, in 
which they spin a small, oval cocoon of brownish silk, either 
just below the surface of the ground or among the leaves and 
rubbish that collect below the plants. Inside these cocoons 
they change to pupe and later to adults, which are ready to 
issue aS winged saw-flies during the last of June or in July, 
sometimes not until the first of August. They now pair and 
produce a new generation of injurious worms, which in turn 
produces a second one, the adults of which do not, however, 
issue until the following spring. As the two broods overlap, 
we can find larve of all stages during the greater part of 
the summer. 

Fig.41.—_Imported Currant-worm; a, male and female saw-fly; b, larve of different 
sizes; c, pupa; d, cocoon; e. eggs. Original. 
