742 



by this insect which has come under the author's notice ; cleaning 

 the bark and smearing with Leineweber's compound was advised. 

 Canadian poplars at Oirschot suffered very severely from the attacks 

 of Cossus cossus, L. {ligniperda, L.). Advice was given to fell the worst 

 attacked trees and burn the stumps, and to inject benzine into the bore 

 holes in less damaged ones and fill them with clay and then to smear 

 the stems with Leineweber's compound. Willow twigs damaged by 

 Farias chlorana, L., were received. Great damage was done to cherry 

 and apple trees by Cheimatobia brumata, L., in 1913 in the Betuw^e 

 District between the Khine and the Waal. This has been going on for 

 several years and urgent advice was given to spray all trees and bushes 

 and all crops grown betw^een the trees in the orchards wdth Paris green 

 and to band the trees w4th some sticky material. In some places the 

 recommendations were very thoroughly carried out, with excellent 

 results ; success appears to depend very largely on the quality of the 

 sticky material used and on the time at which the bands are put on. 

 In the apple nurseries at Veendam a considerable number of Polia 

 {Mamestra) fisi, L., occurred. The larvae feed on clover, vetches, 

 oaks, wallows and even on spruces, and may be controlled in the same 

 manner as Amorpha [Smerintlms) populi, L., which w^as also met with 

 in the same nurseries, by hand collection and spraying with Paris green 

 or lead arsenate. The same methods may be used against Euproctis 

 (Porthesia) aurijlua, Hb., which was also found in nurseries, and against 

 Stilpnotia salicis, L., W'hich did serious damage to Canadian poplars 

 in a nursery at Oudenbosch. 



DiPTERA. At Aalsmeer a large quantity of the pupae of Hylemyia 

 m'^rrescen-SjRond., the carnation fly, were collected, and as the insect 

 appears to be plentiful and the losses important, growers are earnestly 

 advised to burn all infested plants. Larvae of Merodon equestris, F., were 

 found both in narcissus and Amaryllis bulbs ; soaking in water for a 

 week before planting was advised. Species of Tipula were reported as 

 doing serious damage, especially in meadows in the east and south and 

 in the neighbomnng parts of Belgium. The use of a very heavy roller, 

 w^hich w'as previously advised, did not give the results expected. 

 In one locality small holes about 8 inches deep and of the same diameter, 

 with vertical sides, were found very useful as traps, and a special tool 

 for making these holes is now obtainable. 



CoLEOPTERA. Willows in various places w^ere attacked by Phyllodecta 

 vitellinae, L., and P. vidgatissima, L. ; spraying with Paris green or lead 

 arsenate as soon as the beetles make their appearance is advised. 

 Aphthona lutescens, Gylh., which lives on Lythruni salicaria (loosestrife) 

 attacked young rose grafts ; the leaves of older plants w^ere also eaten ; 

 this is apparently the first record of this insect as a pest of cultivated 

 plants. The leaves of Viburmmi opulus nana (dwarf guelder-rose) were 

 eaten by Galerucella viburni, Payk. Garden lupins w^ere damaged by 

 Sitones griseus, F., which is constantly to be fomid on Sarothamnus 

 vidgaris (broom). The plants may be sprayed with Paris green or 

 lead arsenate, but when grown as green manure, this would be too 

 costly, and before sowing land with lupins, all broom plants near it 

 should be destroyed, as this appears to be the natural food-plant of 

 this pest. Young spruces and firs suffered from the attacks of Stropho- 

 somiis Tufipes, Steph., which in one locality did great damage to 



