206 



numbers. Macrosiphum granaria, Kirby, is a common aphid, attack- 

 ing winter-sown rye, wheat and oats. Various aphids were noticed 

 on vetches, but they were all but totally destroyed by the larvae of 

 ladybirds, principally Coccinella punctata and C. bipunctata, by Syrphid 

 larvae and by parasites. Thysanoptera : Haplothrips tritici, Kurd., and 

 Stenothrips graminum, Uzel, were found in great numbers, the former 

 being the more numerous and attacking rye and clover, and the latter, 

 oats. Diptera: Oscinella frit, L., is distributed over the whole of the 

 government, the infestation of oats being estimated at 30 per cent. 

 Mayetiola destructor, L., was found only occasionally. Lasioptera 

 cerealis, L., occurred in some places on barley and rye, accompanying 

 other, more serious pests. A mite, Pediculopsis graminum, injured 

 oats and wheat in the district of Riazhsk in June ; it is probable 

 that this pest is responsible for the turning white of half of the 

 damaged ears, the remainder being caused by OchsenJieimeria taurella, 

 Elatrid larvae and various Diptera. 



In a supplement, recipes and methods of preparation and apph- 

 cation of various insecticides and the rules for spraying fruit trees 

 and bush fruit are given. A second supplement contains a list of 

 58 species of moths captured in molasses troughs between the 2nd 

 June and 9th September, 



GoMiLEvsKY (V.). fpeiiKiii MHM BonoiucKiii Optxi*. [The Walnut 

 {Juglans regia, L.).] — Published by the Rostov-on-Don Society of 

 Horticulture. Supplement to « CaAOBOAli.)) [The Horticulturist], 

 Rostov-on-Don, 1915, 26 pp., 2 figs. 



The leaves of walnuts are attacked by aphids, by the mite, Phyllereus 

 juglandis, by caterpillars of Gracilaria juglandella, Dasychira pudibunda, 

 D.fascelina, and Ampihiptjra p\jramidea, and occasionally in the absence 

 of other food, by Melolontha melolontha. Paris green is recommended 

 against the various caterpillars and kerosene emulsion, quassia, etc., 

 against the aphids and mites. The shoots and young branches of 

 walnuts are damaged by Eulecanium {Lecanimn) juglandis, which can 

 be destroyed by brushing with soapy w ater, preferably after the leaves 

 have fallen; also by a weevil, Peritelus griseus,. 01., against which 

 shaking down from the trees is recommended. A special appliance for 

 this purpose, recommended by Portchinsky, is described, consisting of 

 a piece of cloth mounted on two sticks and lined \\ath cotton w^ool or 

 waste, so as that the insects should not be able to free themselves as 

 they fall ; a third stick is fastened across the cloth with rings and 

 serves for carrying it. The apparatus is held with the left hand while 

 the right one shakes the branches ; the beetles are destroyed by 

 burning them together with the wool or waste. 



Adults and larvae of the Scolytid, Taphrorhynchus {Bostrychus) bicolor, 

 Herbst, and the caterpillars of Zeuzera pyrina {aescidi) are found in the 

 wood and beneath the bark. Cutting and burning the damaged 

 branches or smearing them with a solution of lime to which iron sulphate 

 is added (40 lb. of hme to 1 lb. of iron sulphate), are suggested. The 

 trunks of old walnut trees are also attacked by various insects, such 

 as Cossus cossus [ligniperda) and the Longicorn beetles, Saperda 

 scalaris, Haplocnemia (Mesosa) curculionoides, and Liopus nebulosus. 

 Washing and cleaning the wounds in the trunk and closing them with 



