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Photo#259457
Soft Tick - Carios kelleyi

Soft Tick - Carios kelleyi
Lindstrom, Chisago County, Minnesota, USA
March 19, 2009
Size: ~6mm x ~3mm
Found inside house on wall.

Images of this individual: tag all
Soft Tick - Carios kelleyi Soft Tick - Carios kelleyi Soft Tick - Carios kelleyi

Moved
Moved from Soft Ticks.

Carios kelleyi
Short of having the actual specimen, I am as certain as can be that this is C. kelleyi.

Bat tick
I think this is an adult bat tick, Carios kelleyi. These ticks are usually noticed several months after house owners have successfully excluded bats from a roosting space. The ticks emerge from the former roosting space searching for food.

 
Systematics
The only useful freely available reference I found online was Cooley and Kohls 1944, American Midland Naturalist monograph 1. This picture is a good visual match to Ornithodoros kelleyi in that work.

Apparently the family has been reorganized since then but I don't know how. Neither neartica nor ITIS has any information. I'm inclined to leave this at family level until I understand the systematics better or get a firm ID.

 
Acari project
We've been using the Acari Project for mites and ticks, but if a species doesn't show up in the family you expect, it's basically trial and error to figure out where it is (not a searchable site)
...or maybe that's what you mean by "apparently it's been reorganized"?

 
Reorganization of Argasidae
Argasidae revision article:

Klompen, J. S H. and J. H. Oliver Jr.. 1993. Systematic relationships in the soft ticks (Acari: Ixodida: Argasidae). Systematic Entomology 18:313–331.

 
Formerly Ornithodoros
I think current taxonomy for this species is
Argasidae : Ornithodorinae : Carios kelleyi (Cooley & Kohls, 1941)

I'll check the books tomorrow to see if I can't conclusively key this out, as well. Excellent pictures, and a great addition to the guide.

Sorry I can't help with an ID...
...but just wanted to say that these are great pictures of a very interesting subject! I'll be looking forward to hearing what the experts have to say...

Oh, and Welcome to BugGuide!.

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