411 



is highly infectious ; Anomalon cerinops, Gr. ; Amblyteles vadatorius, 

 III. ; Amicroplus (Macroccntrus) collaris. Spin. ; and the flies, Sarcophaga 

 carnaria, L., Pseudogonia hcbes, Fall., Phryxe vulgaris, Fall., and Gonia 

 divisa, Mg. Birds, bats, moles and toads also destroy this moth. In 

 1917 sugar-beet was very severely attacked, and in the worst cases all 

 the plants were destroyed in 10-30 days. Such varieties of potatoes 

 as have tubers with a loose tissue, a large water content, and a small 

 degree of acidity, are attacked up to 60-100 per cent. E. segetum avoids 

 light and wet soils, and ground manured with sulphate of ammonia, 

 Chile saltpetre or kainit. The measures advised include suitable 

 manuring, clean cultivation, harrowing, roUing, the making of trenches 

 (6-8 in. deep and containing slaked lime with 10 per cent, of 

 calcium chloride), collection of the larvae (of which living individuals 

 onl}^ should be fed to poultry), and strewing infested plots with a 

 dust obtained by crushing larvae killed by Tarichium megaspermum. 

 Fires on still nights in May or September will attract the moths, 

 20-30 per cent, being females. 



Kaven ( — ). Einige im Fruhjahre auftretende Rosenschadlinge. 



[Some Rose Pests occurring in Spring.] — Fordercr im Obst- it. 



Gartenbau, iii, nos. 21 & 25-31. (Abstract in Neuheiten a. d. 



Gebiete d. PflanzenschiUzes, Vienna, 1922, no. 1, pp. 7-8.) 

 Rosebuds are attacked by the caterpillars of Coleophora gryphi- 

 pennella, Bch., which pupate in May. The adults emerge in June 

 and oviposit in the eyes of the rose shoots. The larvae remain on the 

 bush and hibernate on it in cases, which may be collected in winter, 

 especially on the root collar. Painting with calcium sulphide and 

 sprinkling lime on the ground are additional measures. The rose 

 scale, Diaspis rosae, Bch., may be combated by spraying in spring 

 and by removing and burning the infested twigs. Tortrix bergmanniana, 

 L., and similar pests may be dealt with by crushing the caterpillars 

 within the curled leaves. The larvae of T. bergmanniana appear at 

 the end of April and pupate in May. Eucosma (Grapholitha) roborana, 

 Tr., hibernates in the egg stage, and the young larvae feed in April 

 and May between the leaves, which are spun together, and pupate there, 

 the adult emerging after a pupal period of three weeks. The eggs 

 may be brushed off or sprayed, or the larvae crushed in the leaves. 

 Homoptera on roses require spraying or capture on sticky surfaces. 

 Cutting back will dispose of eggs on the twigs, while the bush may be 

 painted with lime to which blood and soap have been added. To 

 protect the plants against the boring larvae of Otiorrhynchus, banding 

 and shelter-traps of leaves or moss are recommended. When deaUng 

 with the sawfly, EmphyUis cinctus, L., care must be taken when 

 cutting back not to leave stumps. Pamphilius {Lyda) inanitus, Villers, 

 is combated by keeping the ground clean and loose and by collecting 

 the curled leaves. The rose beetle, Cetonia aiirata, L., which is not 

 a true pest, may be collected, jarred off, or attracted by a bait of 

 dilute vinegar. 



Jaarboek van het Departement van Landbouw, Nijverheid en Handel 

 in Nederlandsch-Indie 1920. [Year-book of the Department of 

 Agriculture, Industry and Commerce in the Dutch East Indies, 

 \^20.]—Batavia, 1922, 248 pp. Price 3.50 florins. [Received 

 12th June 1922.] 

 This information relating to insect pests has alread}^ been noticed 



from the reports of the various experiment stations, etc. 



(6974) 2 E 2 



