287 



ScHUHMACHER (F.). Ist Pcnfatouia rufipes ntitzlich Oder schadlich ? 

 [Is P. rujipes beneficial or injurious ?] — Naturwiss. Zeitschr. /. 

 Forst- u. Landw., 1918, no. 3-8, pp. 244-246. (Abstract in 

 separate from Zeitschr. landiv. Versuchswesen in Oesteneich, 

 Vienna, xxi, 1918, p. 7 (630).) 



This paper traverses the general opinion that Pentatoma rufipcs, L.j 

 is predaceous on caterpillars, etc. It certainly feeds on dead insects, 

 but never kills living individuals. As this bug also feeds on the 

 young branches, leaves and fruit of apple and sour cherry, it must 

 be classed as injurious. 



BuRKHARDT (F.). Die der Landwirtschaft und dem Gartenbau 

 schadlichen Erdflohe. [Flea-beetles injurious to Agriculture and 

 Gardening.] — Abt. f. Pfl.-Kranlh. des Kaiser Wilhelms Inst. f. 

 Landw., Bromberg, Flugblatt no. 26, March 1917. (Abstract in 

 Zeitschr, landir. Versuchsivesen in Deutschdsterreich, Viemm, 

 xxii, no. 1-2, January-February 1919, pp. 37-38.) 



The flea-beetles infesting peas, vetches, and Cruciferae [in Prussia] 

 include Phyllotreta nigripes, F., P. atra, F., P. cruciferae, Goeze, 

 P. undidata, Kutsch., P. nemoriim, L., Psylliodes chrysocephala, L., 

 and P. napi, F. They are favoured by warm, dry weather. Measures 

 against the first generation are of the greatest practical value. In 

 dry weather repeated harrowing between the rows with light harrows 

 and the spreading of basic slag in sunshine, are recommended. Instead 

 of slag, soot or hme (with a little tobacco dust or sulphur added) may 

 be used. In gardens, spraying ^\ith a solution of carbohc acid, frequent 

 v\'atering and shading the beds, are advised. In the case of Psylliodes 

 chrysocepkala the above measures may be supplemented by capture, 

 the apparatus consisting of frames covered with gauze that is sticky 

 on the lower surface. The biology of Phyllotreta nemonut} is fully 

 described and the life-histories of Psylliodes attenuata, Koch, and 

 P. affinis, Payk., are also dealt with. When taking measures against 

 the last-named, it is necessary to eradicate night-shade plants. 



Voss (G.). Rapsglanzkafer und Rapsverborgenrussler. [Meligethes 

 aeneus, M. viridescens, Ceuthorrhynchus assimilis and C. napi.] — 

 Schaffnits Flugblattsammlung iiber Pflanzenschutz, Bonn-Poppels- 

 f/o;/, Flugblatt no. 14, April 1919. (Abstract in Zeitschr. landw. 

 Versuchswesen in Deutschosterreicli, Vienna, xxii, no. 7-8, July- 

 August 1919, p. 193.) 



As the damage done to rape by Meligethes aeneus, F., M. viridescens, 

 F., Ceuthorrhynchus assimilis, Payk., and C. napi, Koch, is greatly re- 

 duced if the plants are vigorous, the soil should be broken up small 

 and the seed should be well distributed by repeated harrowing, followed 

 by rolling. Direct remedial measures include collection and deep 

 ploughing after the crop has been harvested. 



