39 



Schumacher (F.). Lcucopis nigricornis, Eggers, eine in Schild und 

 Blattlausen parasitierende Fliege. [L. nigricornis, a Dipterous 

 Parasite of Coeeids and Aphids.] — Zeitschr. wiss. Insektenbiol., 

 Berlin, xiv. no. 11-12, 15th July 1919, pp. 304-306. 



The Agromyzid fly, Leucopis nigricornis, Egg., has been recorded 

 from the foHowing hosts, chiefly in North America. 



Coccids : Eriopeltis lichtensteini, Sign., E. feshtcae, Boy., E. 

 coloradensis, Ckll., Pulvinaria innumerabilis, Rathv., P. acericola, 

 Walsh & Riley, P.floccifera, Westw., P. hetulae, L., Eriococcus spurius. 

 Mod., Lepidosaphes iilmi, L., Chionaspis americana, Johns., C. 

 pinifoliae, Fitch, and C. ortholobis, Comst. Aphids : Aphis cephalanti. 

 Thorn., A. gossypii, Glov., Aphis spp. on thistles, willow, and cherry, 

 Pemphigus bursarius, L., P. transversus^ Siphonaphis padi, L. 

 [Macrosiphtim avenae, F.), and Macrosiphoniella {Macrosiphum) 

 sanborni, Gill. 



Herberg (M.). Die Schildlaus, Eriopeltis lichtensteini, Sign. [The 

 Coccid, E. lichtensteini.] — Separate from Arch. f. Naturg., 1916, 

 Abt. A, no. 10, 107 pp., 80 illustrations. (Review in Zeitschr. 

 wiss. Insektenbiol., Berlin, xiv, no. 11-12, 15th July 1919, pp. 314- 

 .315.) 



This monograph is said to be an almost exhaustive study of the 

 morphology, biology and anatomy of the scale, Eriopeltis lichtensteini. 

 Sign. Particular attention is given to its parasites, of which an 

 Agromyzid, Leucopis nigricornis, a Chalcid, and a fungus, Cladosporium 

 coccidarum, have been observed. Experiments with CoccineUid 

 enemies proved unsuccessful. The eggs withstand the temperatures 

 of a North German winter, and resist exposure for 2 hours to 49° C. 

 (120° F.), though 44° C. (111° F.) is fatal to the larvae. 



WiLLER (A.). Beobachtungen zur Biologie von Melasoma populi, L. 

 [Observations on the Biology of M. populi.'] — Zeitschr. wiss. 

 Insektenbiol., Berlin, xv, nos. 1-3, 4-6, 27th September & 

 15th December 1919, pp. 44-47, 65-73, 9 figs. 



Tables are given showing the difference in the measurements of the 

 sexes in Melasoma populi and M. tremnlae. 



M. populi occurs almost exclusively on young specimens of Populus 

 alba. The injury done to the leaves by the adults and larvae is described. 

 The males predominate slightly. The eggs are usually laid on the 

 underside of the leaves in batches of 40-60. When newly-hatched, 

 the larvae remain feeding together. Under laboratory conditions 

 a considerable mortality occurs among the larvae after the third 

 moult. 



Kleine (R.). Begiinstigung der Entwicklung schadlicher Insekten 

 durch Chenopodiaceen und ihre Bekampfung in der Landwirtschaf t. 



[The Favouring of the Development of Injurious Insects b}' 

 Chenopodiaceae and Methods for combating them in Agriculture.] 

 — Zeitschr. wiss. Insektenbiol., Berlin, xv, no. 7-9, 30th April 1920, 

 pp. 142-146. 



Owing to war-conditions agricultural land in Germany has been 

 overrun with weeds. Among those that are not only harmful in 



