Insects Injurious to the Raspberry. 



417 



other wing, when the wings are folded and form two prominent 

 yellow areas ; on the costal border are three smaller, yet prominent 

 spots, there are two or three still smaller basal ones ; at the apical 

 border is a row of four small yellow specks and now and then a 

 smaller yellow spot or two are found towards the middle of the wing 

 area ; the hind wings are paler brown and uniform and the fringes 

 pale ; when quite fresh the wings have a satiny sheen over them. 

 The head is yellowish ; antenna* brown. Legs brownish and the 

 body brown. They fly both by day and by night and may be found 

 hovering round the canes from the end of May into the month of 

 June. They may often be seen 

 settled upon the flowers where they 

 deposit their eggs. Exactly how- 

 many ova each female deposits is 

 not known, but pregnant females 

 have been observed with eighty to 

 ninety in them. 



The egg stage lasts from five to 

 seven days as a rule, but may in 

 some instances be less. 



The larvae at once enter the 

 white core of the " berry " or re- 

 ceptacle, here they remain for some 

 time, taking very little nourish- 

 ment, for no damage is done in 

 this stage, the fruit not being in 

 the least affected ; a small passage 

 marked by a dark line may some- 

 times be noticed, which neverthe- 

 less does not stop the develop- 

 ment of the collection of fruitlets 



around the core. Before the fruit is ripe the small pallid 

 caterpillars leave the receptacles and either fall or crawl to the 

 ground. It is also said that they lower themselves to the earth 

 by means of silken threads. These small larvae then crawl about 

 until they find some convenient shelter in which they spin a small 

 flat cocoon, composed of dull white or grey silk. These cocoons 

 vary from T T ff to -^ inch in diameter. The usual position of 

 these cocoons is either under the rough rind of the canes or in 

 cracks and crevices of the stalks ; they also occur under stones 

 or pieces of wood lying about in the plantations. Under the pro- 

 tection of the cocoons and outside shelter the larvae remain all the 



2 E 



[A. V. D. Rintonl. 



FIG. 275. NORMAL AND DAMAGED (A) 

 SHOOTS OF RASPBERRY. 



