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Photo#52024
Ixodidae - Dermacentor andersoni - male

Ixodidae - Dermacentor andersoni - Male
Lake Fork of the Gunnison River, Gunnison County, Colorado, USA
May 11, 2006
Size: ~5-6 mm
Swept from grasses growing along the river road near the Gateway Bridge.

this
Micki, is a male dog tick, Dermacentor sp. i want to say this is a Dermacontor andersoni, but i cant say definetely. the other possibility would be Dermacentor variablis. D. variablis and D. andersoni unlike their relatives the Ixodes sp. do NOT transmit Lyme disease and are not really considered serious pests. However, D. variablis can transmit the microorganisms that cause tularemia and Rocky Mountain spotted fever. D. andersoni can transmit Colorado Mountain fever

 
tick
Thanks, Omar. It kind of looks like one I found at this site:

http://pick4.pick.uga.edu/mp/20q?search=Dermacentor+andersoni&guide=Arachnida

(Last picture on the page)

Micki Killoran

 
alright
this is 90% a D. andersoni because of your location. their ranges do not overlap. there are no guide pages for them yet so we will have to wait for an editor to create one

 
Guide page created
but before we put this image there, can you give a reference for the range of this species, Omar? Or an identifying characteristic? I have trouble telling this from D. variabilis (below).



Update: I found a range map here.

 
nice
thanks Hannah. lets move this baby and make it the first

 
Done -
thanks for your help, Omar, and thanks for your contribution, Micki!

 
tick
Well, it seems to fall in the range of that map. I have four more pictures of this specimen, if you think it would help. One might add something I'm not seeing.

Actually, on looking at the map more closely, it's right on the eastern edge. I can't be positive it IS in the range

Micki Killoran

 
There's a map with both ranges
here. Does that help? As Omar says, there's no overlap.

 
D. andersoni
Definitely the western most of the two. Thanks.

Micki Killoran

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