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Home » Guide » Arthropods (Arthropoda) » Chelicerates (Chelicerata) » Arachnids (Arachnida) » Mites and Ticks (Acari) » Parasitiformes » Ticks (Ixodida) » Hard Ticks (Ixodidae) » Dermacentor » Western Dog Tick (Dermacentor similis)
Photo#759936
tick - Dermacentor similis
Copyright © 2013 Dan Logen

tick - Dermacentor similis
St John, Whitman County, Washington, USA
April 10, 2013
Size: about 17 mm
Removed from my son's dog. Looks like Dermacentor variabilis, but there are no WA photos.

Images of this individual: tag all
tick - Dermacentor similis tick - Dermacentor similis tick - Dermacentor similis
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Contributed by Dan Logen on 13 April, 2013 - 6:31pm
Last updated 25 August, 2021 - 4:14pm

Moved
Moved from ID Request.
… John F. Carr, 29 April, 2013 - 9:32pm login or register to post comments

Definitely Dermacentor,
I have personally collected and identified samples of Dermacentor variabilis from Latah Co., Idaho, adjacent to Whitman Co., WA, and most likely these photos also represent D. variabilis. A really definitive species ID requires a close up of the spiracular plate found on the side of the tick, posterior to the hindmost legs.
… Jon Oliver, 13 April, 2013 - 11:26pm login or register to post comments

 
Thanks Jon
I don't know much about ticks, so didn't realize it was important to get the spiracular plate. I have posted another image which shows it as well as I got it.
… Dan Logen, 14 April, 2013 - 12:18am login or register to post comments

 
Nice followup shot
Confirmed that this is D. variabilis, well outside of its traditional range.
… Jon Oliver, 14 April, 2013 - 8:40am login or register to post comments

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