LIFE HTSTORY OF CODLING MOTH IN PECOS VALLEY, N. MEX. 35 



The larvae were from both band-record material and the results 

 of propagation of the several broods in the rearing shelter. 



Many of the larvae had been kept over winter in pieces of decayed 

 wood and in strips of corrugated paper. These formed a suitable 

 means of seclusion for the wintering larvae and were kept in glass 

 jars with easily removable tops, from which the emerging moths 

 could be taken without difficulty. 



METHOD OF PROCEDURE. 



Immediately following emergence the moths were transferred to 

 large glass receptacles covered with white cheesecloth or muslin, and 

 there allowed to pro- 

 ceed with mating and 

 egg deposition. Fresh 

 pear foliage was 

 placed within these 

 receptacles daily, and 

 while the majority of 

 the eggs were depos- 

 ited on the leaves 

 and stems, frequently 

 the sides of the jar 

 would be quite thickly 

 studded with eggs 

 when the number of 

 females per jar was 

 excessive. 



The leaves and the 

 twigs upon which the 

 eggs had been depos- 

 ited were removed 

 from the containers 

 daily and placed in 

 a glass jar in which 

 a holder or basket 

 made from woven 

 wire of fine mesh, and 

 containing a number of medium-size apples, had been inserted. 

 Only unsprayed fruit was used for this purpose, and care was exer- 

 cised to make certain that no fruit was used that had been previously 

 entered by larvae. When the period of incubation was over the 

 leaves and the twigs were removed, because the presence of the 

 leaves frequently offered a place for cocooning and pupation, which 

 was not desirable. Tn figure 6 a sample cage is illustrated, and the 

 strips of wood which were prepared and dropped in to provide accept- 

 able hiding places during cocooning and pupation are also shown. 



Fig. 6. 



-Sample cage used to determine feeding period of codling- 

 moth larva?. (Hammar.) 



