148 INSECT PESTS OF BERRIES AND GRAPES 



same material, at the rate of one ounce of hellebore to three gallons 

 of water. Before the fruit is set, and also after it is picked, arsenate 

 of lead is cheaper and more effective as a spray material. 



The Native Currant Worm. The greenish caterpillars of this 

 saw-fly (Pristophora gossularice Walsh) appear on currant and 

 gooseberry leaves in the spring. They feed on the leaves until 

 full grown and pupate among the twigs. The adults are black, 

 four-winged flies. The females deposit their eggs under the 

 epidermis of the leaves. There are two broods a year. 



The control is the same as for the imported currant worm. 



The Four-lined Leaf-bug. This bug (Pcecilocapsus lineatus 

 Fabr.) is widely distributed in North America. Its upper surface 



FIG. 167. The four-lined leaf-bug; a, adult; 6 and c, nymphs. (After Slingerland.) 



is green or yellowish, with four black stripes. The tips of the 

 wing-covers are black. The body is a bright orange yellow 

 (Fig. 167). The nymph, when newly hatched, is one-twentieth 

 of an inch long; bright red, marked with blackish spots. 

 When full grown this nymph is one-fifth of an inch long. Egg . 

 hatch in late spring. The nymphs require from seventeen 

 to twenty days to complete their growth. 



Injury. This insect preys upon a long list of plants, but is 

 particularly injurious to currant and gooseberry. Attacked leaves 

 appear spotted, turn brown, curl up, become brittle, and are torn 

 and broken by the wind. Shoots bearing these leaves are checked 

 in growth and frequently droop and die. Dahlias and roses are 

 often injured; in fact, it is a marked enemy of these two plants. 



