318 



Calolropis procera ; and two unidentified Trypetids from fruits of 

 Zizyphus spina-christi and the safflowcr (Carthamits tindorius) 

 respectively. Species recently imported into Egypt are : — Dacus 

 [Chactodacus] zonatus, Saund., in mango at Port Said; D. olcae, 

 Meig., in olives from Cyprus ; and Myiopardalis {Carpomyia) pardalina, 

 Big., which infests cucurbits. The possible establishment of these 

 flies should be prevented, and the introduction of others, such as 

 Dacus (Chaetodacus) fcrrngincus, F., and D. cucnrbitae, Coq., should 

 be guarded against. 



Gibson (G. W.). The Value of Lime, Salt, and Sulphur as a Winter 

 Wash for Figs against the Cup Scale ( Astcrolccanium piistulans).^ 

 Agric. Jl. Egvpf, Cairo, x, 1920, pp. 41-47. [Received 26th 

 April 1921.] 



The larvae of Asicroiecanium pnstulans, Ckll., hatch in small num- 

 bers during June in the Faiyum ; infestation continues throughout 

 July, and the larvae are very numerous in August and September ; 

 they have also been observed in October. This scale is only active 

 during the larval stage. The food-plants include oleander, Jacaranda, 

 Cassia, Geranium, etc. 



In the case of the fig, the wood, leaf, stalk and even the fruit may 

 be attacked. During 1917 and 1918 a solution of 25 to 40 lb. 

 of quick lime, 20 lb. of sulphur, 15 lb. of salt, and 60 gals, of 

 water was applied as a spray to the fig trees. It should be used 

 while still warm. During 1917 the work was carried out in 

 January, and in 1918 it was completed by 12th February. Earlier 

 applications would probably be better, and would avoid the retarding 

 effect the spray has on fruit trees when applied late in the season. 

 Further experiments are desirable with reference to time of spraying, 

 as a late crop is not desired. Spraying should not be done after the 

 buds burst, or serious scorching may result. Dried leaves should be 

 removed before spraying. Owing to a serious attack of Rhizopus 

 nigricans, the yield of the 1918 crop was much smaller than that of 

 1917, but the general results indicate the benefit of spraying, particu- 

 larly if applied in successive years if there is danger of reinfestation 

 from adjacent plots. 



Growers are advised to start with clean cuttings and to give careful 

 attention to irrigation and heavy manuring to keep the trees as 

 vigorous as is consistent with the production of fruit. The trees 

 should not be surrounded by other plants susceptible to this scale, 

 unless equally amenable to treatment. Spraying is not worth while 

 until the second winter, unless there is an immediate source of 

 infestation. 



Report of Entomological Division on Plant Pests. — Trop. Agric, 

 Pcradeniya, Ivi, no. 3, March 1921, pp. 147-150. 



The work in connection with Xylehorus fornicatus (shot-hole borer 

 of tea) has been continued. Experiments with castor-oil plants as 

 trap trees are still in progress. Homona coffearia may be controlled 

 by the application of lime and a good system of flight breaks through- 

 out the estate. Leaf-eating caterpillars and tea mites have been 

 responsible for a considerable amount of damage ; the most important 

 of these are Natada nararia (fringed nettle grub), Heterusia cingala 

 (red slug), Staiiropus alternus (lobster caterpillar). Psyche vitrea, 

 Clania variegafa, Tetranychus bioculatus (red spider), Eriophyes 



