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Photo#303712
Carabid - Patrobus lecontei

Carabid - Patrobus lecontei
Nosehill Park, Calgary, Alberta, Canada
July 4, 2009
Size: 11 mm
From pitfall trap; habitat was grassland/marsh

Moved
Moved from Frass.

Frassed
Moved from Patrobus lecontei.

 
Nice historical dialogue here
between us with regard to your early motivation to study northwestern Carabidae. You've come a long way since then. I trust this image is being replaced by better ones of same species?

 
Yes, I have replaced one of m
Yes, I have replaced one of my images of a paler (possibly teneral) individual of this species. Since this one is a darker form I will replace this one eventually. Come to think of it, I'll move this back to species page for now.

Moved
Moved from Patrobini.

Patrobus lecontei
Based on Lindroth; similar species would be P. fossifrons but the pronotum of the latter species is more cordate/constricted at the base.

Moved
Moved from Ground Beetles.

Patrobini
Based on Pete's key to carabid tribes, that he kindly emailed me a copy. Will have to wait a bit longer for genus and/or species though. Thanks Pete.

Pterostichini vs Patrobini ??
is best I can do from your image which again is wanting in photographic clarity as I've mentioned before. Tim, your profile suggests that you already have background in entomology. Hoping that you have access to a stereomicroscope, I recommend that you start keying your specimens to carabid tribe then genus if at all possible. One place to start is the introductory key to northeastern tribes (applies to most northwest carabids) in Downie & Arnett (1996) chapter 4. A more technical key to all North American tribes appears in American Beetles (2001). Alternatively, you can mail me (limited) specimens for identification if you are finding slow turnarounds from Yves Bousquet (very busy I'm told). See my profile for details. Good luck.

 
Will be quite a task...
as I have accumulated hundreds of specimens (3 full boxes and going into my 4th designated for this family alone, mostly from southern AB and some from southwest BC) from this season and last year. I've been trying to get a hold on Lindroth's publication on Canadian and Alaskan carabids but it has been on loan forever :-[
I haven't heard anything from Yves yet so I was guessing he must be busy at this time. I will be happy to mail you some specimens if you like. Also I will be in southwest BC (Vancouver area) for most of August and it's likely that I will be doing some collecting. Hope to snag a few more northwestern specimens for you.

 
Patrobini was my first gut feeling
...which i decided not to trust [don't ask me why :]

hmm... looks special... no viable ideas at this point
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