109 



Madan Mohan Lal. Report of the Assistant Professor of Entomology. 



— Re})t. Dept. Agric. Punjab, Year ended ^Oth June 1917, Lahore, 

 1917, [Appendix iv, pp. ix-x]. [Received 5th January 1920.] 



The pests recorded include : — Earias insulana, Boisd., and E. fabia, 

 Stoll (cotton boll worms), the damage by which has been reduced 

 from 20 per cent, to 4 or 5 per cent, owing to the parasite Rhogas sp. ; 

 Myllocerus blandus, Fst., reported for the first time as a serious pest 

 of cotton, confines itself to maize when this is used as a trap-crop ; 

 Oxyc-arenits laetus, Kirby (dusky cotton-stainer) and Dijsdercus 

 cingulatus, F. (red cotton-stainer) on cotton. A scale-insect, Mono- 

 phlebus stebbingi, Green, and Jassids, Idiojerus spp., infested mangoes, 

 remedial measures against the latter insects being the thinning out of the 

 groves and the breaking up of the soil surface round the roots to increase 

 the vitality of the trees ; five sprayings of 1 lb. of fish-oil resin soap 

 to 15 gals, of water applied from February to March ensures the setting 

 of the fruit. Date palms were attacked by Rhyncliophornsfernigineus, 

 OJiv., during September and October. Various remedial measures 

 were tried ; of these the erection of mud enclosures filled with water 

 round the infested trunks proved the most successful. Spraying 

 with \ pint of crude oil in 4 gals, of water proved effective against a 

 Psyllid, Euphalerus citri, on Citrus. The food-plants of Euproctisflava, 

 F., include castor- oil plants, cotton, peaches, pomegranates and roses. 

 A powerful water spray proved the most effective remedial measure 

 against these caterpillars. 



Madan Mohan Lal. Report of the Assistant Professor of Entomology.- - 



Rept. Dept. Agric. Punjab, Year ended 30ih June 1918, Lahore^ 

 1918. [Appendix iv, p. viii.] [Received 5th January 1920.] 



Owing to the presence of the parasite Rhogas sp. the damage done 

 by Earias insulana, Boisd., and E. fabia, Stoll, to cotton has greatly 

 diminished. New parasites of these bollworms that have been dis- 

 covered are a Tacliinid fly parasitising the larvae and a Braconid 

 and a black Chalcid infesting the pupae. Bands of well-carded cotton- 

 wool with the fluffy side outwards and grease bands of crude vasehne 

 or rape oil appHed to the trunks proved most effective in preventing 

 Monophlebus sp. from reaching the blossoms of mango trees. 



Spraying in March and June with crude oil and tobacco decoction 

 was successfully tried against the Psyllid, Euphalerus citri, which has 

 been causing great damage to Citrus. 



Jardine (X. K.). Tortrix Flight Breaks. Field Experiments with 

 Anti-Tortrix Fluids. — Ceylon Dept. Agric., Peradeniya, Bulls. 45 

 & 46, September & November 1919, 4 pp., 1 plate, & 23 pp.^ 

 4 plates. [Received 5th January 1920.] 



Details are given of the experimental work of the investigation 

 dealing with the control of tea tortrix [Honiona coffearia] in Ceylon. 

 The results of these investigations have previously been noticed 

 [R.A.E., A, vii, 113 & 404]. 



