138 



LuTCHNiK (V.). No. 1. l/lBOBbiH iijejiKonpflA"b. No. 2. SawbTKa 



nOBt epeflHblXT* HactHOWblXlj. [No. l. The Willow Moth {Stilpnotia 



salicis, L.). No. 2. Note on the trapping of insect pests.] — Reprint 



from «JlK)6MTeJlb npMpOAbl» [Friend of Nature], published by 



the Section of Agriculture and Experimental Organisation of the 



Kiev Society of Agriculture and Agricultural Industries. 



Petrograd, 1914, 8 pp. 



In the first of these articles, the Lymantrid, Stilpnotia salicis, L., 



which is found in the whole of Europe, in the Caucasus, Asia Minor, 



Siberia and Japan, causing considerable damage to willow and poplar 



trees, is dealt with. The eggs are deposited on the bark, less frequently 



on leaves. As many as 70 per cent, of the caterpillars collected were 



infested with parasitic Diptera not yet identified, though the following 



Tachinids are known to be parasites of S. salicis : — Carcelia gnava, 



Meig., C. excisa, Fall., Compsilura coyicinnata, Meig., Tachina larvarum, 



L., T. rustica, Meig., and Carcelia (Parexorista) cheloniae, Rond. 



Some hymenopterous parasites, not yet identified, were also reared 



from the larvae. The usual remedies against this pest consist in 



destroying the eggs by scrubbing the bark and burning them or 



spraying with insecticides. 



In the second article, the method of combating insect pests by means 

 of trap-trenches and molasses-troughs is criticised, as it often leads 

 to the destruction of many useful insects. In the spring of 1914, 

 in trap-trenches against Bothynoderes {Cleonus) punctiventris in the 

 government of Kiev, many useful insects were found, including the 

 Carabids, Pterostichus {Platysma) cupreus, L., Amara apricaria, Payk., 

 and Ophonus {Harpalus) pubescens, Mull., as well as Hister Jimetarius, 

 Herbst. All these species are enemies of B. pmictiveyitris, especially 

 the last-named. In molasses-troughs, great numbers of Chrysoja 

 have frequently been found. In order to minimise this, the troughs 

 should be removed immediately the flight of Euxoa segetum or other 

 such pests is over. 



OssiPov(N.). OceHHifl paSoTbi bo (|)pyHTOBOM-b caAy. [Autumn work 

 in orchards.] — « CaAOBOAli-)) [The Horticulturist], Rostov-on-Don, 

 no. 10, October 1914, pp. 758-764. [Received 12th February 1915.] 



Autumn work in orchards to control insect pests and fungus diseases 

 of plants is described. This consists in cleaning and pruning the trees, 

 spraying with iron sulphate, re-digging the soil round them and apply- 

 ing trap-belts. The cost of such work, in the demonstration orchards 

 of the Entomological Station of the Zemstvo of the Government of 

 Bessarabia, is from 205. to 22s. for an orchard of about half an acre, 

 containing an average of from 100 to 150 fruit-trees. 



SoHREiBER (A. F.). PesynbiaTbi AByxjitiHuxij onbiTOB-b no yHMMTO- 

 weHilO MypaBbBBT*. [The results of two years of experiments on 

 the destruction of ants.] Reprinted from « KJrO-BoCTOHHblR Xo- 

 SflMHli [South- Eastern Farmer]. — « CaA0B0A'b-» [The Horticul- 

 turist], Rostov-on-Don, no. 10, October 1915, pp. 793-794, 

 [Received 12th February 1915.] 

 Experiments in the destruction of ants extending over two years 



are described, hyposulphite of soda being the most effective means of 



