\ 



530 



two sprays, the first consisting of 10 lb. of lead arsenate paste to 

 120 U.S. gals, of water and 4 lb. only of dry lead arsenate for the 

 second spray. The first spray must be applied just before the 

 emergence of the first flies, which is about 12th July in New Brunswick 

 and Maine. The second application should be made about twelve 

 days later. The spray should cover every part of the tree. 



Three pounds of soluble sulphur and 1 pt. Black -leaf 40 to 120 U.S. 

 gals, water applied after the emergence of young oyster-shell scales 

 [Lepidosaphes uhni] proved more efficacious than the dormant spray 

 against this pest. High pressure spraying or drenching with soluble 

 sulphur and Black- leaf 40 immediately before and after blooming is 

 advocated for the control of the green apple bug [Lygiis communis]. 



Andrews (E. A.). Insect Pests of Tea in North-East India during 

 the Season 1919. — Qrfh/. Jl. Sci. Dept. Indian Tea Assoc, Calcutta, 

 1920, pt. 2, pp. 27-36. 



The insects recorded include Andraca hipunctata, Wlk. (bunch- 

 caterpillar), which was in evidence from February to May and again 

 in October, but was less numerous than during 1918. Collection of the 

 clusters of the caterpillars is considered an efficient means of control. 

 Agriophora rhomhota, Meyr. (sandwich caterpillar) has only been 

 reported from one district of Assam. Zeuzera coffeae, Nietn. (red borer) 

 has apparently two broods in the year, one appearing from March to 

 April and the other from August to September. Arbela dea, Swinh. 

 (bark-eating borer) is gradually becoming less numerous, probably 

 owing to more careful pruning. Diapromorpha melanopus, Lac. (orange 

 beetle) was chiefly in evidence from April to June and again in Septem- 

 ber, and was more numerous than usual. Helopeltis theivora, Waterh. 

 (tea mosquito) was particularly injurious. Empoasca flnvescens, Dist. 

 (tea green-fly) was more abundant in certain localities. 



Other pests recorded are Biston suppressaria, Gn. (looper cater- 

 pillar) ; Heterusia magnifica, Butl. (red slug), found in small numbers in 

 July and October ; Clania spp. (faggot and bagworms) ; AcanthopsycJie 

 reidi, Watt (limpet caterpillar) ; Belippa spp. (gelatine grubs), most 

 conspicuous in July and from mid-October to November ; TJwsea 

 cervina, Moore (nettle grub) ; and Physotkrips setiventris, Bagn., seen in 

 June, July and September. The cricket, Brachytrypes achatinus, 

 StoU, was very injurious in nurseries. Tetranychus hiocidatus, 

 W.-M. (red spider) proved more serious in the early part of the year 

 than in 1918. Lime-sulphur, lime and fresh cowdung, sulphur and 

 cowdung, sulphur and mud, were all reported to have been used success- 

 fuUy against it. Eriophyes (Phytoptus) theae. Watt (pink mite) was 

 more numerous. 



MozNETTE (G. F.). Dusting v. Spraying for the Control of Avocado 

 Insect Pests. — Florida Grower, xxi, no. 14, 1920, pp. 8 & 17, 

 2 figs. (Abstract in Expt. Sta. Record, Washington, D.C., xliii, 

 no. 3, 31st August 1920, p. 255.) 



The most important pests of avocado in southern Florida are 

 Tetranychus yothersi, McGreg. (avocado red spider), greenhouse thrips 

 i.nd the leafhopper, Empoasca minuenda, Ball. Fine dry sulphur dust 



