Carabidae - Laemostenus complanatus

Moved

… v belov, 2 March, 2021 - 10:46pm

Laemostenus complanatus, in my opinion.

A common introduced species in coastal CA.

… Curt Harden, 24 February, 2021 - 9:30am

Interesting because I struggled the same way with these images.

Here is where posted body size really would have been the clincher: funebris is about half the size of complanatus. The two species sit side by side in my same unit tray. The physical differences are obvious. I seem to be plagued by difficulty in translating images to the real thing. The pronotum does appear proportionately broad enough to be L. complanatus. Thanks.

… Peter W. Messer, 24 February, 2021 - 9:41am

Thanks!

I have both of these two available and there is in fact a size difference. Also one came from excellent wooded habitat (smaller) while the other is from an urban yard (larger). I had trouble telling the photos apart, but they were quite different in the hand. More to follow.

… Bill Hubick, 24 February, 2021 - 10:33am

14 mm

Measured this one at 14 mm, seemingly supporting Laemostenus complanatus?

… Bill Hubick, 25 February, 2021 - 5:05pm

Correct! Interstingly ...

your other recent post measured half this body size and so it secured "Anchomenus funebris".

… Peter W. Messer, 25 February, 2021 - 5:23pm

Tribe Platynini

Next step for someone is to decide genus: Platynus vs Agonum. When I find more free time I hope to check these images against my synoptic set which contains 90% of North American species of Agonum + Platynus.

… Peter W. Messer, 24 February, 2021 - 8:07am

Thank you

Much appreciated as always. This one and a couple others are still available for addition photos, if helpful.

… Bill Hubick, 24 February, 2021 - 8:15am

Anchomenus funebris (LeConte)

with little doubt. Here is a sister genus to Agonum. I have several example from California sent to me by western BugGuiders who have helped my mission to provide carabid identifications for others.

… Peter W. Messer, 24 February, 2021 - 8:22am

Thanks, Peter

Would you like this specimen? I'm happy to send some your way as well. I can generally add needed photos for recently photographed carabids. I appreciate your work in the space.

If interested in occasional specimens from central CA, please contact me at bill_hubick ---@--- yahoo.com or send me an e-mail address.

… Bill Hubick, 24 February, 2021 - 8:45am

Thanks Bill

I will email you. I have 9 specimens of Anchomenus funebris from CA - all males, so I need a female that is hopefully among yours.

… Peter W. Messer, 24 February, 2021 - 9:06am