102 



Pfeiffer and Stammer (1930) isolated this phosphorescent 

 organism from the larvae of Mamestra oleracea . The organ- 

 ism is not identical with any of the known light producing 

 "bacterial strains pathogenic for invertebrates. Laboratory 

 infection was possible only when the "bacterial masses from 

 the hemolymph were inoculated. Attempts to infect by 

 mouth were not successful. The organism was found to "be 

 pathogenic for other insects also. Pfeiffer and Stammer 

 have given a complete description of the organism. 



* Pfeiffer, H. and Stammer, H. F. 1930 Pathogenes Leuchten 

 "bei Insekteri. Z. fur Morph. und (5kol der Tiere, 20 , 

 136-171. 



Bacter I um I mper I ALE Steinhaus 



Insect concerned: The imperial moth, Eacles imperialis . 



Steinhaus (19^1) isolated this "bacterium from the ali- 

 mentary tract of Eacles imperialis . It is a gram positive 

 short rod. 



•*Steinhaus, E. A. 19^1 A study of the "bacteria associated 

 with thirty species of insects. J. Bact. , h-2, 757-790. 



BACTER 1 um I NTR I nsectum Steinhaus 



Insect concerned: An unidentified leaf "beetle (Chrysomeli- 

 dae ) . 



From the alimentary tract of an unidentified leaf 

 "beetle, Steinhaus (19^-1) isolated this bacterium. 



*Steinhaus, E. A. 19^1 A study of the "bacteria associated 

 with thirty species of insects. J. Bact., k2, 757-790. 



Bacter 1 um i t al i cum No . _2_ Metalnikov et al . 

 Insect concerned: The corn borer, Pyrausta nubilalis . 



This organism was isolated from the larvae of the corn 

 "borer by Metalnikov, Ermolaev, and Skoboltzyn (193O). It 

 is a very virulent organism killing corn "borer larvae in 

 20 to 2h hours. 



Bacterium i tali cum has been fully described "by the above 

 authors. Since it is a large, spore-forming rod, a more 

 suitable generic name would "be that of Bacillus. 



