6AC I LLUS P1ER IS DQUEFACIENS BETA Paillot 

 (See Bacillus pieris liquefaciens alpha . ) 



Bacillus pieris non- l i quefac i ens alpha Paillot 



Insect concerned: The white cabbage "butterfly, Pieris 

 braseicae . 



Paillot (1919) isolated Bacillus pieris non-liquefaciens 

 alpha and "beta from infected white cabbage "butterfly lar- 

 vae. (See Bacillus pieris fluorescein . ) 



* Paillot, A. 1919 Cocco"bacilles parasites des chenilles 

 de Pieris brass icae . Com.pt. rend. acad. sci., l68 , 

 V76-478. 



B AC I LLUS PIERIS NON- L IQUEFAC I ENS BETA Paillot 

 (See Bacillus pieris non-liquefaciens alpha . ) 



BAC I L L'JS P IRENE I 



(See Bacterium pyrenei . ) 



Insects concerned: Pieris spp. ; the corn "borer, Pyrausta 

 mibilalis . 



In laboratory and field experiments carried out near 

 Leningrad and in Moldavia, Pospelov (1936) found that 

 cultures of Bacillus pirenei proved to be very virulent 

 to various lepidopterous larvae. When applied in sprays 

 against Pieris spp. on cabbage during sunny weather, the 

 bacilli gave 10-100 per cent mortality and remained 

 effective for 20 days. They also killed 25 per cent of 

 the larvae of Pyrausta nubilalis on maize. 



It is quite probable that this organism is the Bacterium 

 pyre nei of Metalnikov, Ermolaev, and Skobaltzyn (1930) 

 which they isolated from diseased corn borers. 



Metalnikov, S. , Ermolaev, J. , and Skobaltzyn, V. 1930 

 New bacteria pathogenic to the larvae of Pyrausta 

 nubilalis Hb. Inter. Corn Borer Invest., Sci. Rpts., 

 3, 28-36. 



Pospelov, V. P. 1936 Summary of the scientific research 

 work of" the institute of plant protection for the year 

 19*/- '. Ru* ,enin Acad. Agri. Sci., pp. 318-321. 



