INSTITUTE, PUSA, FOR 191b-iv »i 



the cages buried in the Insectary compound no colony lived 

 for the whole year. 



Lampyris marginella has been found, by observation out- 

 side, to have probably one generation in the year. 



Ancylolomia chrysographella hibernates in the larval 

 stage from about November to about March-April. Then 

 it has several broods, each cycle taking about a month. It 

 has been observed to breed mostly among wild grasses. 



Aspongopus brunneus has been observed to cause serious 

 damage to pumpkin plants. A cycle was observed of this 

 insect. 



Massepha absolutalis and another Pyralid rolling bam- 

 boo leaves have been observed to rest in the larval stage in 

 winter and summer. 



Pvrausta machceralis has been observed to hibernate in 

 the larval stage. 



Complete cycles were observed of Pericallia ricini, 

 Amsacta moorei (form sard), Hister sp. and a Halticid beetle 

 on Anisomoles ovata. 



Pempheres affinis, the cotton stem weevil, has been 

 observed to breed in a new foodplant Triumfetta sp. (N. O. 

 Tiliaceae). 



Polyommatus boeticus has been observed to breed in the 

 flowers of Butea frondosa (Palas) in such large numbers as 

 to be reckoned as a. pest of these flowers. 



7. Grain storage experiments. The storage experi- 

 ments were continued and the results so far obtained are 

 briefly noted under different heads. 



(/) Wheat. Many of the results which promised success 

 on the first year's trial on a small scale were upset when 

 tried on a medium storage scale this year. But some 

 important differences were observed in the habits of the two 

 principal pests we have to deal with at Pusa, i.e., Calandra 

 oryzce and Rhizopertha dominica. Rhizopertha cannot 

 breed when there is free access of air, but under the reverse 

 conditions (e.g., in earthen vessels with their mouths plas- 

 tered up with mud) it is capable of doing much more dam- 

 age and that in a much shorter time than Calandra oryzce 



