LTPE HTSTOEY OP CODLTISTG MOTH IK PECOS VALLEY, N, MEX. 85 



The larvse were from both baud-record material and the results 

 of propagation of the several broods iu 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 

 jai-s 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 musUn, 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 thicldy 

 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. 

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

 cised to mak(! certain that no fruit was used that had l)een previously 

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

 leaves and the twigs were removed, because th(^ presence of the 

 leaves frequently offered a j)lace for cocooning and ])upation, which 

 was not desirable. In figure a sumpk^ cage is illustrated, and the 

 sfrips of wood which wei-e j)r(^parcd and dropped in to ])rovide. accept,- 

 uhjc hiding places during cocooning and pupation are also shown. 



Fig. C— Hami)lo cage used to detcrmino feeding ])oriofl of codlinfr- 

 moth lurvn'. ( nuiiimar.) 



