DISEASES TRANSMITTED BY BLOODSUCKING FLIES 215 



Castellanella eqmperdum (Doflein) Chalmers, cause of DOURINE of 

 horses, has been experimentally transmitted by interrupted feedings of 

 the stable fly, Stomoxys calcifrans Linnaeus and Atylotus tomentosiis 

 Alacquart by Sergent and Sergent (1906). 



Castellanella evansi (Steel) Chalmers, cause of SLTRRA of cattle and 

 horses, has been experimentally transmitted by bites of Stomoxys calci- 

 trans Linnaeus, S. geniculatus Bigot and S. nigra Macquart. Either 

 experimental evidence or strong suspicion points to transmission by the 

 horse flies, Tabanus tropicus Linnaeus, T. striafus Fabricius, T. lineola 

 Fabricius, T. atratus P'abricius, T. fumifer Walker, T. partitus Walker, 



HosrH (M/sn) 



Ho9TE(Tse:TS!:Ky) 



H0!rl(TsE,5tF..) 



Host I (A.T..OP.) 

 W.LO Reservoir 



LIFE CYCLE OF TRYPANOSOMA GAMBIENSE. 



The Cause OfGambian Sleeping Sickness OpMan 

 Host I TR.sELA-HuisPE.ei (^^^pl). 



H0SrI.EGu.SS,~A P.URA^IS (tsetse FLv). 



HostH. HoMOSAPiENj (Man). 



Fig. 43. (Pierce.) 



T. vagus Walker, T. mvnimus Van der Wulp, and other species of Tabanus 

 and Haematopota. Certain writers have also suspected Lyperosia minuta 

 Bezzi, Philaematomyia crassirostris Stein and Lyperosia exigua Meigen 

 {Haematobia). The parasite has also been found in the stomach of 

 Stomoxys geniculatus. 



Castellanella evansi mborii (Laveran), cause of INIBORI, a camel 

 trypanosomiasis of Africa, is believed to be carried by Tabanus taeniatus 

 Macquart and T. biguttatus Wiedemann. 



Castellanella gambiense (Dutton) Chalmers {nigeriense Macfie), 

 cause of GAMBIAN AND NIGERIAN SLEEPING SICKNESS of man, 

 has wild animals for its reservoir, and is principally transmitted by Glos- 

 sina palpalis Robineau-Desvoidy and its variety fuscipes. Experimental 



