273 



.Stellwaao (F.). Rebstichler [Bijctiscus betulae, L.) in der bayer. 

 Rheinpfalz. {Bychscus betulae, L., in the Bavarian Rhine 

 I'alatinate.] Zeiischr. f. angew. Enloni., Berlin, v, no. 1, 1919, 

 p. 129. [Received 19th April 1920.] 



Durino 1918, as in the previous year [R.A.E., A. viii, 268], Byctiscuf; 

 betulae, L., was very abundant in the Rhine Palatinate. At the time 

 of maximum infestation an order was passed to close all schools for a 

 few days so that the children might assist in collecting the weevils. 

 It is hoped that this pest will be less abundant in 1920 owing to these 

 measures. 



Krausse (A.). Uber Amdus cinnamomeus, Panz., die Kiefernrinden- 



wanze. [Pine Bark Bug.] — Zei^scAr. /. angew. Enlom., Berlin, v, 

 no. 1, 1919, pp. 134-136, 5 figs. [Received 19th April 1920.] 



During 1917 a bug, Aradus cinnamomeus, Panz., caused great 

 damage to pines in the neighbourhood of Eberswalde. Various stages, 

 inckiding eggs, were found to be present on 18th August. The first. 

 larva from these eggs emerged 5th September. Various characteristics 

 of this pest are described. The natural enemies of the bugs include 

 larvae of Rhajjhidia sp., which were only present in small numbers. 



The trees were also infested with a bark-beetle, Pityogenes bidentatus, 

 Hbst., in the galleries of which Hypophloeus linearis, F., was also found. 

 Other pests on the trees included a weevil, Brachonyx pineti, Payk., 

 and the Aphids, Lachnus pineus, Mordv. {pineti, Koch, nee F.) and 

 L, piiii, Kalt. The latter were largely attended by Formica fusca 

 cinerea. Only a few larvae of Bupalus piniarias, L., were found in 

 the locality. 



Lakon(G.). Die Insektenfeinde aus der Familie der Entomophthoreen. 

 Beitrag zu einer Monographie der Insektentotenden Pilze. [The 

 Enemies of Insects belonging to the Family of Entomophthora. A 

 Contribution to a Monograph of Insect-killing Ynngi.] - Zeitsckr. 

 f. angew. Entom., Berlin, v, no. 2, 1919, pp. 161-216, 18 figs. 

 [Received 19th April 1920.] 



The genera Empusa, Lamia, Entotnophthora and Tarichium are 

 described and a key for the identification of these fungi is given. The 

 insect hosts are dealt with under their respective orders. The paper 

 concludes with an extensive bibliography of 216 works, 47 of which 

 are especially referred to as dealing with the culture and practical 

 utility of these fungi. 



Friederichs (K.). Plocaederus obesus, Gah., ein gefahrlicher Feind 

 des Kapokbaumes. [Plocaederus obesus, Gah., a serious Enemy of 

 the Silk-cotton Tree.]— ^Zeitschr. f. angew. Entom., Berlin, v, no. 2, 

 1919, pp. 226-230, 7 figs. [Received 19th April 1920.] 



A Longicorn beetle, Plocaederus obesus, Gah., is recorded as a serious 

 pest of kapok trees {Eriodendron anfractuosum.) in Cochin China. 

 The larvae bore in the wood and cause the ultimate death of the trees. 



The formation and position of the pupa in the trunk are described. 



(684) B 



