TABULATION OF DISEASES AND INSECT TRANSMISSION 493 



Disease 



Causative organism 



Souma, Zambian 

 Spirochsetosis, bovine 



Duttonella cazalboui. 



Insect transmitter 



Duttonella cazalboui pigritia. 



Spiroschaudinnia theileri. 



Glossina palpalis 

 " longipalpis 



" morsitans 



" tachinoides 



Stomoxys calcitrans 



" nigra 



Tabanus biguttatus 

 " tseniatus. 



Hfematopota 

 turbans. 



Boophilus annulatus 



australis 

 Rhi pi cep h al u s 



evertsi. 



Method of insect 

 transmissions 



Spirochsetosis, fowl, of North 

 America 



Spiroschaudinnia granulosa. 



Argas pe'sicus. 



Spirochsetosis, fowl, of Senegal 



Spiroschaudinnia neveuxii. 



Argas persicus. 



Spirochsetosis, fowl, of South 

 America 



Spiroschaudinnia marchouxi 



Nature of 

 insect r61e 



Argas persicus 

 reflexus 

 Ornithodoros mou- 

 bata. 



Transmitted by 

 fly bite. 



Transmission 

 by fly bite. 



Taken up by 

 bite of tick. 

 It appears 14 

 days after in- 

 oculation by 

 larval tick. Is 

 hereditary in 

 B. decolora- 

 tus. The man- 

 ner of inocu- 

 lation is not 

 determined 

 but is prob- 

 ably by the, 

 washing into 

 the wound of 

 the organ- 

 isms in the 

 Malpighian 

 excrement. 



Transmitted by 

 bite of tick. 

 The inocula- 

 tion is prob- 

 ably accom- 

 plished by the 

 washing into 

 the wound of 

 the organ- 

 isms in t h e 

 Malpighian 

 excrement. 



Transmitted by 

 bite of tick, 

 probably by 

 being washed 

 into the 

 wound by cox 

 al fluid from 

 the Malpig- 

 hian excre- 

 m e n t in 

 which it is 

 voided. 



Taken up by the 

 bite of tick 

 and voided in 

 Malpighian 

 excrement 

 which is 

 washed into 

 the wound 

 made by bite, 

 by c o X a 1 

 fluids. Is 

 probably her- 

 e d i t a r i 1 y 

 transmitted 

 in the tick. 



Intermediate 

 host. 



Intermediate 

 host. 



Intermediate 

 host. 



Intermediate 

 host. 



Intermediate 

 host. 



Intermediate 

 host. 



