850 EXPERIMENT STATION EECOED. 



An account of the campaign against locusts in Turkestan, including mechanical 

 and chemical means, and a discussion of natural enemies. 



The Morocco locust {Stauronotus maroccanus) is the most important species. 

 The migratory locust (Pachytylus migratorius) possesses several permanent 

 areas of distribution in Central Asia but this species rarely damages crops, 

 preferring the shoots of reeds which occur in abundance near the egg-laying 

 areas. The Italian locust {Caloptenus italicus) is a common species in Tur- 

 kestan but until recently has only caused a small amount of injury. A number 

 of other species are injurious though not to the same extent as the three above 

 mentioned. 



A note on the relation between the tea mosquito (Helopeltis theivora) and 

 the soil, E. A. Andrews { Indian- Tea Assoc, Set. Dept. Quart. Jour., No. 1 

 (1914), pp. 31-35). — Investigations of the factors controlling the activities of 

 the tea mosquito in causing blight indicate that tea planted in soil in which 

 the ratio of available potash to available phosphoric acid is low will be more 

 likely to be attacked by mosquito blight than tea planted in soil in which this 

 ■ratio is high. It is suggested that this condition may be remedied by the 

 application of potash manures. 



Aleurodes vaporarium, an enemy of Azales indica. Van Hove {Rev. Hort. 

 Beige, 39 (WIS), No. 24, pp. 392, 393; abs. in Intemat. Inst. Agr. [Romeli, Mo. 

 Bui. Agr. Intel, and Plant Diseases, 5 (1914), No. 3, p. 4^7).— This white fly, 

 which is well known to Belgian azalea growers, is said to have been very 

 abundant in the autumn of 1913. 



A new sugar cane aphis, H. F. Wilson (Ent. News, 25 (.1914), No. 7, pp. 

 298, 299, pi. 1). — ^An aphidid collected on sugar cane at New Orleans, La., is 

 described as Aphis hittiberculata n. sp. 



European caterpillars and their food plants, P. Blaschke (Die Raupen 

 Europas mit ihren Futterpflanzen. Annaherg, Germany, 1914, PP- [i^] + 

 XXIX-\-264-\-15, pis. 34).— The first part of this work (pp. 1-264) consists of a 

 caterpillar calendar in which are given brief descriptions of the European 

 forms, notes on their occurrence and food plants from month to month, etc. 

 The second part (pp. 1-75) lists alphabetically and describes the food plants 

 with the caterpillars occurring on each. Indexes to the German and technical 

 names of the lepidopterans and the German names of the food plants are 

 appended to the two parts. 



Six colored plates of caterpillars representing 156 species and 28 colored 

 plates of food plants in bloom, with indexes to both, are included. 



Instructions for rearing mulberry silkworms, M. N. De (Agr. Research 

 Inst. Pusa Bui. 39 (1914), pp. 25, pis. 4, figs. 3). — A work prepared for use by 

 those engaged in silk culture. 



Grapholitha leplastriana, an enemy of cauliflower, G. Cecconi (Bol. Lab. 

 Zool. Oe)i. e Agr. R. Scuola Sup. Agr. Portici, 7 (1913), pp. 125-148, pi. 1; abs. 

 in Rev. Appl. Ent., 2 (1914), Ser. A, No. 6 pp. 347, S^S).— The caterpillar of this 

 moth, supposed to live on wild cabbage (Brassica oleracea silvestris) exclusively, 

 has been found by the author to attack cauliflower at Fano in the Province of 

 Marches. 



Borer in san, M. M. Desai (Poona Agr. Col. Mag., 6 (1914), No. 1, pp. 39, 

 40). — During the course of a rotation experiment with san as a green manure 

 crop it was seriously injured by the attack of an undetermined lepidopterous 

 larva which bores into the buds and shoots. Caterpillars of Argyna cribrasiu 

 were also a source of injury. 



Miscible oil spray for fruit tree leaf roller (Archips argyrospila), G. P. 

 Weldon (Mo. BuJ. Com. Hort. Cal, 3 (1914), No. 7, pp. 285, 286, fig. 1).— 



