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 calcitrans Linnaeus and Atylotus tomentosus 

 Macquart by Sergent and Sergent (1906). 



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

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

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

 experimental evidence or strong suspicion points to transmission by the 

 horse flies, Tahanus tropicus Linnaeus, T. striatus Fabricius, T. lirteola 

 Fabricius, T. atratus Fabricius, T. fumifer Walker, T. partitus Walker, 



Hurlll (man) 



Hl>0Tl2(TsElSEft.v) 



H.!»I (T.I 



Wild Reservoir 



LIFE CYCLE OF TRYPANOSOMA GAMBIENSE. 



The Cause OrGAMBtAN Sleeping Sickness OpMan 

 Host I TttAocLAPHut spcnei (Anitlopl). 

 HosrJ[,l£,GLossiNA palpalis (tsetse flvL 

 nO^lU. HoMQ SAPICN3 (Man). 



Fig. 43. (Pierce.) 



T. vagus Walker, T. minimus 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 

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

 Stomoxys genicvlatus. 



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

 trypanosomiasis of Africa, is believed to be carried by Tabamus 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 



