486 



of burrowing easily enables them to do. A 25 per cent, solution of 

 phenyle was fairly successful, but 50 per cent, damaged the plant ; 

 pure kerosene was effective ; commercial carbon bisulphide destroyed 

 the borers, but the plant was badly damaged ; further experiments 

 are being made to determine the maximum dosage non-injurious to 

 the plant and the minimum dosage fatal to the grub. 



SuBRAMANiA Iyer (T. V.). Notes on the More Important Insect Pests 

 of Crops in the Mysore State. — J I. Mysore Agric. & Exptl. Union, 

 Bangalore, iv, no. 2, 1922, pp. 78-81. 



This section of notes on crop pests in Mysore [R.A.E., A, x, 389] 

 deals with Coccids, which are destructive to fruit-trees and permanent 

 crops, such as coffee, tea or rubber. The most important are Coccus 

 viridis colemani, Kann. (green bug), present on almost all coffee estates 

 in Mysore, especially at the lower altitudes, being most abundant from 

 March to May. Two fungi, a black form in summer and a white form 

 in the cold season, keep the scale largeh' in check. Food-plants include 

 guavas, Citrus, Aegle marnielos and Ficus. Spraying with fish-oil 

 resin soap and the introduction of fungus enemies are practised. 

 Saissetia [Lecanium) hemisphaerica, Targ. (brown bug) is present on 

 most coffee estates, either on coffee or other plants, and sometimes 

 constitutes a coffee pest. Piilvinaria psidii, Mask., attacks guava trees 

 for preference, and is also found on coffee, Ficus, mango, Citrus, etc., 

 covering infested trees with sooty mould. P. maxima, Green, is widely 

 distributed, generally on margosa trees [Melia azadirachta], causing 

 sooty mould, and encouraging large numbers of the black ant, Cam- 

 ponotus compressus. Phenacoccus insolitus. Green, is a pest of egg- 

 plants [Solanum melongend] in September, the leaves of infested plants 

 curling up. Pseudococcus longispinus, Targ., was noticed as a bad pest 

 of mango trees in March. Three sprayings with kerosene emulsion 

 reduced the numbers to normal. Aspidiotus cydoniae, Comst., is a 

 pest of grapes, covering the vines so completely that they dry up. 

 In the apple the scales cluster round the eye of the fruit and the 

 fruit-stalks. A. tamarindus, Green, covers the fruits, leaves and small, 

 twigs of tamarind. A. triglandulosus. Green, is abundant on jak trees 

 [Artocarpus integrifolia], the small twigs often being so densely covered 

 that in a year they are quite dry. 



Baudys (E). Zprava o Vyskytnuti se Skudcu r. 1920. [Pests of 

 1920.] — Casopis Ceskoslov. spoken, ent., Prague, xviii, no. 3-4, 

 1921, pp. 55-58. [Received 29th July 1922.] ' 



The pests recorded during 1920 in Czecho-Slovakia include : Rhab- 

 dophaga saliciperda, causing great damage to willows ; Contarinia 

 ribis on gooseberries ; Biorrhiza pallida on oak ; Perrisia [Dasyneura) 

 laricis on larch ; Saperda populnea on aspen and poplar ; Eriosoma 

 (Schizoneura) ulmi and E. (5.) lanuginosum on elm ; Sitona lineata on 

 beans, peas and lucerne ; Lema cyanella causing serious damage to 

 wlieat in May ; Malacosoma neustria, Nygmia phaeorrhoea {Euproctis 

 chrysorrJwea) and Aporia crataegi on fruit-trees ; Phyllocoptes vitis in 

 vineyards ; the Aphids, Myzus oxyacanthae on apples and hawthorn, 

 M. cerasi on cherries, M. ribis and Aphis grossulariae on gooseberries 

 and red currants, A. rumicis {euonymi) on spindle tree, j{. pruni on 

 plums. Pemphigus nidifictis on ash, Eriosoma lanigerum {Myzoxylits 

 laniger) and Chermes (Pineus) strobi ; Tortrixviridana on oak ; Typhlocyba 



