83 



Schwerdtfeger, F. 193 6 Zur Kenntnis der roten Kiefern- 

 "buschhornblattwespe, Diprion sertifer Geoffr. (Lophyrus 

 rufus PanZ.). Z. pfl. Krankh. , U6, 513-53^. (See also 

 Rev. Appl, Entomol. A., 25, 5k. ) 



*Shiperovich, V. va. 1925 A sawfly injurious to the pine 

 and its control. Eln Russian.] Protect. Plants Ukraine, 

 1925, kl-h6. (See also Rev. Appl. Entomol., A, lh, 209.) 



Bac 1 llus sept I cus I NSECTQRUM Krassilstschik 

 Insect concerned: The cockchafer, Melolontha melolontha . 



In 1893 j Krassilstschik isolated this organism from 

 cockchafers and found it to he the cause of a septicemia 

 among the larvae. The organism seems to gain entrance 

 into the larvae "by way of the skin for Krassilstschik 

 (I916)' states: "The larvae are not cannibals in the sense 

 that they devour each other, hut they often attack and 

 wound one another and these wounds, however slight, often 

 prove fatal, as they provide means of entry of noxious 

 "bacteria. " 



Northrup (191*0 found a gas -producing "bacillus asso- 

 ciated with Micrococcus nigrofaciens which she thought 

 might he B. septicus insectorum . 



^■Krassilstschik, I. M. I893 La Graphitose et la 



Septicemie chez les Insectes. Memoires de la Socilfte 



Zoolog. de France, 6, 2^5-285. 

 Krassilstschik, I. M. 1916 Report on the work of the 



Bio-Entomological Station for Bessarahia in 191^-1915. 



Kishinew, 1916, 96 PP» 

 Northrup, Zoe 191^ A "bacterial disease of June "beetle 



larvae, Lachnosterna sp. , Mich. Agri. Coll. Expt. 



Station Tech. Bull. No. 18, 36 pp. 



Bac 1 llus s im i l 1 s 



Insects concerned: The nun moth, Lymantria monachae ; 

 the white cahhage "butterfly, Pieris "brassicae ; Porthesia 

 auriflua; and Yanessa urticae . 



This spore-forming "bacillus was found "by Eckstein (189*0 

 to he pathogenic for the larvae of the ahove-listed in- 

 sects which had "been experimentally infected. Eckstein 

 asserts that this organism is similar to the well-known 

 Bacillus megatherium . 



