478 



SANITARY ENTOMOLOGY 



Disease 



Causative organism 



Insect transmitter 



Method of insect 

 transmissions 



Nature of 

 insect role 



Depluming mite, chicken 

 Dermatitis, beetle 



Diarrhea, fowl 

 Diarrhea, infantile 



Diarrhea, summer. 



See Paracolitis, Poisoning 

 (food) 



Cnemidocoptes gallinae. 



Cantharis flavicornis. 



" veslitus 



Paiderus columbinus 

 other Meloid and 

 Staphylinid beetles. 



Spirillum metchnikovi. 



Bacillus of Morgan. 



Diphtheria 



Dourine 



Dysentery, amoebic 



Dysentery, bacillary 



Dybcntery, lamblian 



East Coast fever 

 (Rbodesian fever) 



Bacillus diphtberiae. 



Castellanella equiperdum. 



Ldsehia histolytica. 



Bacillus dysenterise. 



Giardia intestinalis. 



Tbeileria parva. 



Eczema 



Elephantiasis. 

 See Filariasis (human) 



Enteritis. 



See Acariasis. 



Pediculus corporis. 



Cnemidocoptes gal- 

 linee. 



Same as preceding 

 column. 



Blatta orientalis. 



Musca domestica. 



Musca domestica. 



Stomoxys calcitrans 

 Atylotus tomentosus 



Calliphora erytbro- 



cepbala 

 Musca domestica. 



Musca domestica. 



Musca domestica. 



Rbipicephalus simus 

 " appendicu- 



latus 

 " evertsi 

 " capensis 

 Hyalomma aegyp- 



tium 

 Demiacentor reti- 



culatus 

 Dermacentor nitens 



Pediculus corporis. 



Direct attack 

 at base of 

 feathers. 



These beetles 

 secrete pow- 

 erful irritant 

 liquids which 

 they emit 

 when attack- 

 ed. 



Passes through 

 i n 1 s t i n al 

 tract intact. 

 Infection by 

 contamina- 

 tion. 



Taken up by fly 

 larva ftom 

 stools. Sur- 

 vives through 

 metamor- 

 phosis. De- 

 posited in 

 feces on food. 



Flies take up 

 from sputum 

 and deposit 

 in feces on 

 food. 



Experimental 

 transmission 

 by interrupt- 

 ed feeding. 



Taken up from 

 stools in en- 

 cysted stage. 

 Deposited in 

 feces on food. 



Taken up by 

 larvae from 

 stools. Sur- 

 vives through 

 metamor- 

 phosis. De- 

 posited in fe- 

 ces on food. 



Taken up from 

 stools in en- 

 cysted stage. 

 Deposited in 

 feces on food. 



Transmitted by 

 the tick in 

 the instar fol- 

 lowing that 

 in which tak- 

 en up, or by 

 next genera- 

 tion. 



Direct attack. 



Parasite. 



Producers of ir- 

 ritant secre- 

 tions. 



Mechanical 

 carrier. 



Mechanical 

 carrier. Pos- 

 sibly also bi- 

 ological. 



Mechanical 

 carrier. 



Mechanical 

 carrier (?) 



Mechanical 

 carrier. 



Mechanical 

 carrier. 



Mechanical 

 carrier. 



Intermediate 

 host. 



External para- 

 site. 



