78 



*G-laser, R. W. 1918 A systematic study of the organisms 

 distributed under the name of Coccobacillus acridiorum 

 d'Herelle. Ann. Entomol. Soc. Am., 11, 19-^2. 



BAC I LLUS POP I LL 1 AE Dutky 

 (See also Bacillus lentimorbus ) 



Insects concerned: The Japanese "beetle, P opillia japonica ; 

 Anomala oriental is , Autos erica castanea , Cyclocephala 

 (Ochrosidia) borealis , Phyllophaga anxia , P. bipartita , 

 P. ephilida , P. f us ca , P. rugosa , Strigoderma arboricola , 

 Cotinis nitida and Ma cr oda c ty lus subspinosus . 



Dutky (19^0) describes two spore -forming "bacteria, 

 which he names Bacillus popilliae and Bacillus lentimorbus , 

 as the causative agents, respectively, of types A and B 

 milky disease of the larvae of the Japanese "beetle. In 

 describing Bacillus popilliae , Dutky states that this or- 

 ganism "is a nonmotile Gram-positive rod measuring about 

 0.9 "by 5.2 microns. The rods "become swollen at sporulation, 

 assuming first a spindle and then a pyriform shape... In the 

 "broader pole of the cell is found a refractile "body, which 

 is about half the size of the spore and possesses staining 

 reactions s-imilar to those of the spore. " Dutky also 

 describes the symptoms and appearance of the disease. 



Subsequent to his original findings, Dutky (19^1) found 

 the following scarabaeid species to be susceptible to this* 

 disease: Anomala oriental is , Autos erica castanea , Cyclo - 

 cephala ( Ochrosidia ) borealis , Phyllophaga anxia , P. 

 bipartita , P. ephilida , P. fusca, P. rugosa , Strigoderma 

 arboricola , and Strigodermella pygmaea . On the other hand, 

 Cotinis nitida and Macro da ctylus subspinosus were not 

 susceptible. 



Dutky, S. R. 19^0 Two new spore-forming bacteria causing 



milky diseases of Japanese beetle larvae. J. Agr. 



Research, 6l, 57-68. 

 Dutky, S. R. 19^-1 Susceptibility of certain scarabaeid 



larvae to infection by Type A milky disease. J. Econ. 



Entomol. , $k, 215-216. 



BAC I LLUS PRODIG iOSUS Flugge 

 (See Serratia marcescens ) 



