494 



SANITARY ENTOMOLOGY 



Disease 



Spirocheetosis, goose 



Spirochsetosis. 



See Relapsing fever 



Splenic fever. 

 See Cattle fever 



Suppurating wounds (bluo- 

 green pus) 



Surra 



Causative organism 



Spiroscbaudinnia anserina. 



Bacillus pyocyaneus. 



Castellanella evansi. 



Tahaga (el dedab, zousfana) 



Tapeworm, canine and human 



Tapeworm, cattle and man 

 Tapeworm, fowl 



Tapeworm, fowl 



Castellanella soudanense. 



Dipylidium caninum. 



Teenia saginata. 

 Choanoteenia infundibulum. 



Davainea cesticillus 

 Davainea tetragona. 



Insect transmitter 



Argas persicus. 



Musca domestica. 



Experimentally 



transmitted by 



Stomoxys calcitrans 



geniculatus 



" nigra. 



Strong suspicion 



points to 

 Tabanus tropicus 

 striatus 

 lineola 

 fumifer 

 " partitus 

 " vagus 

 " minimus 

 The following are al- 

 so suspected: 

 Lyperosia minuta 

 Philaematomyia cras- 



sirostris 

 Lyperosia exigua. 



Musca domestica. 



Aedes argenteus. 



Stomoxys calcitrans 



nigra 

 Atylotus nemoralis 

 tomentosus 



Trichodecles latus 

 Ctenocephalus canis 

 " felis. 



Pulex irritans. 



Musca domestica. 



Musca domestica. 



Musca domestica. 



Method of insect 

 transmis.sions 



Transmitted by 

 bite of tick. 

 Transmission 

 is probably 

 the washing 

 into the 

 wound of the 

 organism in 

 Malpighian 

 excrement. 



Taken up from 

 wounds and 

 carried to 

 wounds. De- 

 posited in 

 feces on 

 wounds. 



Nature of 

 insect rdle 



Intermediate 

 host. 



Mechanical 

 carrier. 



Transmitted by Intermediate 

 fly bite. host. 



Taken up from 

 wounds and 

 transmitted 

 to wounds. 



Mosquitoes ex- 

 perimentally 

 took up or- 

 ganism which 

 persisted for 

 hours. 



Transmission 

 by bite of fly 

 (experimental). 



Insect swallows 

 eggs. Ani- 

 mals swallow 

 insects. 



Insect swallows 

 eggs. Depos- 

 its on food. 



Insect larvae 

 swallow eggs, 

 chicken swal- 

 lows fly. 



Insect swallows 

 eggs. Chicken 

 swallows fly. 



Mechanical 



carrier. 



Mechanical 

 carrier. 



Intermediate 

 host. 



Intermediate 



host. 



Mechanical 

 carrier. 



Intermediate 

 host. 



Possibly inter- 

 mediate host 



