15.— SOME INDIAN ECONOMIC ALEYRODID^. 



By C. S. MiSRA, B.A., First Assistant to the Imperial Entomologist. 



Aleurolohus barodensis, Maskell. (Plate 70). 



Aleurodes barodensis, Mask. — Trans. New Zealand Inst., Vol. 28, p. 242, 



1895. 

 Aleurodes barodensis, Mask.— W. M. Maskell, Ind. Mus. Notes, Vol. IV, 



Pt. 3, pp. 143-144 and 213, Plate XXII, fig. I, 1900. 

 Aleurodes barodensis, Mask. — H. W. Peal, Jour. Asiatic Soc, Vol. LXXII, 



Pt. II, No. 3, 1903, pp 90, 92-93. 

 Aleurodes barodensis, Mask. — Lefroy, Mem. Dept. Agric. India, Ento. 



Series, Vol. I, No. 2, p. 245, 1907. 

 Aleurodes barodensis. Mask. — G. W. Kirkaldy, Cat. of Hemipteroiis 



family Aleurodidae, p. 47, 1907. 

 Aleyrodes barodensis, Mask. — A. L. Quaintance, Genera Insectorum, p. 5, 



1908. 

 Aleurodes barodensis, Mask. — Lefroy, Ind. Ins. Life, p. 751, 1909. 

 Aleurolobus barodensis. Mask. — A. L. Quaintance and A. C. Baker, 



Classification of the Aleyrodidse, Pt. II, 1914, p. 109. U. S. Dept. 



Agric, Technical Series, No, 27, Part 11. 

 Aleurolobus barodensis, Maskell, popularly known as cane mealy- 

 wing or sugarcane white-fly, is in particular places and in some years 

 very destructive to sugarcane, especially the broad leaved varieties. 

 During the past fourteen years that I have been observing the pest at 

 Pusa, I have found it bad in some years and lightly sj in other years. 

 It is bad from July to November when it is more or less parasitized, 

 in years when ratoon cane was allowed to remain on the ground, the 

 subsequent new plantations were more affected than when no such 

 crop was allowed to remain on the ground. With the ratoon crop the 

 pest continued to breed and quickly transferred itself to the new crop. 

 Besides, I have seen the pest bad at Nagpur, Baroda, Tharsa (Central 

 Provinces), and present on the cane at Cawnpore and Sindewahi (District 

 Chanda, Central Provinces). In February 1908, when I examined 

 thB sugarcane on the Sewage Farm, Nagpur, the pest was so bad on 

 the leaves that with the whitish puparia on the leaves, especially the 

 ioWer side, they looked white from a distance. The lower leaves were 

 encrusted thickly with the black fungus, Cajpnodium sp., and on the 

 whole the fields looked pale and sickly. The cultivators though thorough 

 agriculturists ascribed the stunted growth of the plants to the scarcity of 

 irrigation water. In a case like this it was no wonder that, the plants 

 being deficient in sucrose contents, they were not much appreciated by 

 the local people in the city j:eths where they were put up for retail sale. 



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