158 



Brown (1927) isolated this gram- negative, motile, 

 coccus from dead Lucilia sericata which has been killed 

 by Bacillus lutzae (which see). Taxonomically, according 

 to Brown, this organism should he placed near Neisseria 

 perflava Bergey et al. (See Bergey' s Manual, 1939? 5th 

 ed. , p. 281. ) 



-*Brown, F. M. 1927 Descriptions of new "bacteria found 

 in insects. Amer. Mus. Novitates, No. 251, 11 pp. 



Genus : Veillonella 



Ve I LLONELLA parvula Bergey et al, 

 (See Micrococcus parvulus . ) 



Family:, •PARVOBACTER I ACEAE 

 Tribe: BRUCELLEAE 

 Genus : Brucella 



Brucella ABORTUS (Schmidt and Weis) Meyer and Shaw 



insects concerned: The cockroach, Periplaneta americana ; 

 and the flies, Musca domestica , Muscina stabulans , Stomoxys 

 calci trans , Caliphora sp. , and Lucilia sp. 



Ruhland and Huddleson (19^-1) in attempting to account 

 for the appearance of brucellosis in non- infected herds 

 kept under ideal conditions fed the above insects for two 

 hours on a virulent strain of Brucella abortus after which 

 the insects were examined bacteriologically. In the 110 

 cockroaches tested the "bacterium did not remain alive in 

 their intestinal tract for more than 2h hours. "Data 

 obtained from the flies indicate that the amount of growth 

 obtained by culturing the droplets was heavier and more 

 free from contamination kQ hours after exposure than at 

 earlier periods. Although no flies were cultured later 

 than 96 hours after exposure, it is possible that they 

 carry the organism for a considerable period of time. " 



According to Patton (1931) Wollman found that flies 

 kept in contact with Brucella abortus for U8 hours, and 

 then placed in a tube containing culture medium, remained 

 infective for 2h hours but not later. 



