Parasite Atlas

The goal of this page is to provide you with a guide to help you identify common cutaneous parasites of dogs and cats that you may encounter in your clinic. These are microscopic images, and reflect what you would find on an appropriate superficial or deep skin scraping, or trichogram.

Appropriate magnification settings are different for each parasite (usually 10x or 40x), and remember to drop the condenser and close the aperture to maximize contrast and enhance visualization of the parasites you are looking for.


For treatment of these parasites, you may be able to find recommendations on other areas of the Dermavet website (Clinical Cases, Forums, Bibliography). If you are unable to find what you are looking for, feel free to ask in the clinical cases Forum.

Cutaneous parasites of the dog
Common Name Scientific Name Life Stage Photos
Mites  
Demodex Demodex canis Adult 4 1
  Demodex cornei Adult 4 3
  Demodex injai Adult 4 5
    Egg 4 6
 Scabies  Sarcoptes scabiei  Male adult 1 4
     Female adult 1 3
     Eggs 1 6
     Feces 1 5
 Cheyletiella (“Walking Dandruff”)  Cheyletiella yasguri  Adult 6 2
     Egg 6 7
 Harvest mite, chigger Trombicula autumnalis  Larva 8 1
 Brown dog tick Rhipicephalus sanguineus  Adult 7 10
Castor bean tick Ixodes ricinus  Adult 7 7
American dog tick Dermacentor variabilis  Adult 7 9
Insects  
Biting louse Trichodectes canis  Adult 11 5
Sucking louse Linognathus setosus  Adult 11 3
     Egg 11 10
Flea (cat flea) Ctenocephalides felis  Adult 10 10
     Egg 10 13
     Larva 10 14
     Feces 10 33
Cutaneous parasites of the cat
Mites  
 Demodex Demodex cati  Adult 5 1
  Demodex gatoi  Adult 5 2
     Egg 4 6
Feline Scabies Notoedres cati  Adulte 2 1
 Cheyletiella (“Walking Dandruff”) Cheyletiella blakei  Adult 6 2
     Egg 6 7
 Harvest mite, chigger Trombicula autumnalis  Larva 8 1
 Ticks Rhipicephalus sanguineus  Adult 7 10
  Ixodes ricinus  Adult 7 7
  Dermacentor reticulatus  Adult 7 9
Insects  
Lice Felicola subrostratus  Adult 11 7
     Egg 11 10
Flea (cat flea) Ctenocephalides canis  Adult 10 10
     Egg 10 13
     Larva 10 14
     Feces 10 33