no 



HuTsoN (J. C). Progress Report of the Entomologist, July-September, 



1921. — Trop. Agric, Peradenyia, Ivii, no. 5, November 1921, 

 pp. 319-320. 



Special investigations are in progress on Natada nararia (fringed 

 nettle-grub), Spodoptera mauritia (paddy stem-borer), Nephantis 

 serinopa (coconut caterpillar), Aidarches militaris (spotted locust) and 

 Calotermes spp. Other pests reported during the quarter included: 

 Hypsipyla robusta (toon shoot-borer) ; Ceroplastodes cajani, attacking 

 Tephrosia Candida ; and Taragama dorsalis and Terastia meticulosalis 

 on dadap [Erythrina]. 



As the result of an outbreak of Nephantis serinopa on coconuts, 

 this moth has recently been declared a pest by an Ordinance in Council. 

 The remedial measures scheduled under the Regulations are the use 

 of various light traps. 



Parker (T.). Red Spider: A Note on its Control. — Nurseryman 

 & Seedsman, London, no. 1426, 29th December 1921, pp. 9-10. 



Various experiments carried out for the control of red spider under 

 glass are here described. On carnations spraying is very unsatis- 

 factory owing to the waxy bloom, which causes the spray fluid to 

 collect in globules at the axils of the leaf. Dipping gives better 

 results, though it can only be applied to potted plants that are not 

 in bloom, and must be repeated once or twice. Liver of sulphur 

 and petroleum emulsion, containing 16 per cent, potassium sulphide 

 and 34 per cent, petroleum (1 : 40), did no damage to the plants, 

 though it caused some staining of the foliage. Fumigation with 

 either tetra- or pentachlorethane produced uncertain results, without 

 harming the carnations. 



On cucumbers a spray containing 5 per cent, nicotine sulphate (40 

 per cent.), 50 per cent, petroleum and 30 per cent, potash fish oil 

 soap was quite effective in controlling these mites. The plants were 

 sprayed with the fluid at 1-160 dilution in the evening, and syringed 

 with clear water the following morning. This treatment was repeated 

 once or twice. 



DiFFLOTH (P.). Les Arbres d'Ornement et leurs Ennemis. — Vie Agric. 

 et Rur., Paris, xix, no. 53, 31st December 1921, pp. 467-471, 



5 figs. 



This paper gives some account of the commoner North American 

 insects infesting shade and ornamental trees. 



Ravaz (L.). Le Ver Blanc dans les P^pinieres. — Progres Agric. et 

 Vitic, Montpellier, Ixxvii, no. 1, 1st January 1922, pp. 7-8. 



LamelUcorn larvae appear periodically and damage vine plants in 

 nurseries or young plantations, making ringed or spiral incisions on 

 the main roots. Areas so infested should not be selected for nurseries. 

 The remedies suggested are the disinfection of the ground with carbon 

 bisulphide or potassium sulpho-carbonate before establishing a 

 plantation. These substances are, however, expensive. Trap crops, 

 such as potatoes, which are preferred to vines, might also be planted 

 between the rows. 



