rROCEEDINGS OF THE THIRD ENTOMOLOGICAL MEETING 



613 



Tlie grubs were specially active in devouring the fruiting bodies {iperi- 

 thecia) of tlie fungus, and were again observed in numbers during Decern- ' 

 ber 1912. Tbe adult beetles liave been found to devour with avidity the 

 nymphs and adults of the Ked Spider, Tetranychus Uoculatus, especially 

 bad on castor, jute and Hihiscus abelmoscJms at Pusa. The sequence of 

 observations was : — 



4th September I916.-Nymphs put on two potted bush- mulberry plants. (From 



cuttings obtained from Malda). 

 12th September 1916.— Apical leaves turned coppery-green and the stem flattened 



out laterally (both ways). 

 14th September 1916.— Leaves became curled, malformation of shoot apparent 



now. 

 18th September 1916.— Leaves curled distinctly, malformed apical head became 



compact. 

 19th September 1916.— Mildew, Phylladinea corylea, visible on the leaves especially 



the lower ones. 

 21st September 1916.— The leaves became dark coppery-green and crisp. 

 23rd September .1916.— The mildew, P%ZZac<Mi«.' -rylea, became very prominent 



and spread to a number of leaves on the plant. 

 4th October 1916.— The leaves became pale yellow and fell down. 

 90th October 1916.— The growth of the affected plant from 19th September to 19th 



October 1916 was onlv 3} inches. Some of the apical, malformed leaves 



became pale yellow prematurely and fell down. The lower leaves became 



covered profusely with the white mildew. 

 31s October 1916.— The total apical growth of the plant from 19th September to 



31st October 1916 was 4i inches 



Such leaves, if served to Bomhijx mori caterpillars, cause Flacherie 

 and Grasserie in the worms {vide letter from Mr. A. C. Ghosh, Superin- 

 tendent of Sericulture, Bengal). The apical leaves become crisp with the 

 presence of the mealy-bugs on the top shoots of plants and contain very 

 little succulent matter in them. It is no wonder if worms fed on such 

 leaves should develop Grasserie and Flacherie. 



At Pusa Phenacoccus kirsutus has been found by me on Moms spp., 

 cotton and on potted Ficvs religiosa plants kept near the potted mulberry- 

 plants to study the life-history of the White-fly. Close to the potted 

 mulberry-plants were also Eugenia jambolana, Ficus glomerata, sugar- 

 cane, paddy seedhng, and Citrus decumana plants, but none' of these was 

 found affected. During the present winter, fully matured and gravid 

 female P. Mrsutus have hibernated on Ficus religiosa plants in pots and 

 I was able to rear one complete cycle on these plants. Late in October, 

 when Spalgius epius caterpillars appeared, they cleared away whole 

 colonies of P. Ursutus on the potted mulberry as well as on Ficus religiosa 

 plants. On mulberry plants in pots I have found Pseudococcus virgatus. 

 to occur along with P. hirsuius, but the nymphs and females of ti^e 



