[I] Fleas: [1] Classification: [I] Fleas: [1] Classification: Notes | EduRev

: [I] Fleas: [1] Classification: [I] Fleas: [1] Classification: Notes | EduRev

 Page 1


[I] Fleas: 
[1] Classification: 
Page 2


[I] Fleas: 
[1] Classification: 
 
[2] Medical importance: Fleas: 
(I) F: Endemic Typhys. 
Fleas
Without eyes
Leptopsylla:
 ????? Lenses
With eyes
Angular head: 
Tunga
Round head
Combed:
-phyllus ?????
Non
Xenopsylla:
Mesopleural sutrure
Pulex
Ocular bristle 
below eye
?? ????? ? ??? ??
Human flea 
has one hair
Page 3


[I] Fleas: 
[1] Classification: 
 
[2] Medical importance: Fleas: 
(I) F: Endemic Typhys. 
Fleas
Without eyes
Leptopsylla:
 ????? Lenses
With eyes
Angular head: 
Tunga
Round head
Combed:
-phyllus ?????
Non
Xenopsylla:
Mesopleural sutrure
Pulex
Ocular bristle 
below eye
?? ????? ? ??? ??
Human flea 
has one hair
(II) L: Plague. 
(III) EAS:  ??? 3  ???? ?  ??? 3 ??????? 
[3] Xenopsylla is the best vector: 
(I) Beside human. 
(II) Both human & rats. 
(III) Blocked. 
[4] Tunga penetrans: 
(I) Penetrans: Penetrate 
(II) Tunga: ( ? chigger’s disease) Toes, female leaves a tongue 
outside. 
[II] Diseases transmitted by pediculus: 
[1] Epidemic typhus: Rickettsia prowazekii ???? ?????. The cycle in lice = 
endemic typhus. 
[2] Epidemic relapsing fever: Borrelia recurrentis. 
[III] Hard ticks & soft ticks:  
[1] The following items are in the favor of hard ticks: Parasitism, 
sexual demarcation, capitulum protrusion, scutum, festoones, 
pulvilli. 
[2] Pedipalps: Rigid in hard ticks. 
[3] Haller’s organ: Hearing, olfaction. 
[IV]  
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