Looks like a Clivina - Schizogenius falli

"Schizogenius" is my limit given these images.

Arizona is home to 10 species which need careful physical study to distinguish them using the tricky key by Whitehead (1972). The subject is fresh today since I keyed out several typical Schizogenius falli from Arizona. All mine are uniformly testaceous to light reddish/yellowish brown as they should be. The images here appear way too dark brown to fit S. falli in my opinion. Photographic trickery affecting coloration is always possible.

… Peter W. Messer, 26 November, 2021 - 9:34pm

I hope I can find

photos of more typical ones for the AZ beetle book. I don't think that the color is photographically altered too strongly because the life shot and the other one were taken on different days

… margarethe brummermann, 26 November, 2021 - 10:46pm

S. falli appears to be the predominant reddish member

in southern Arizona. I don't have the specimens corresponding to these images, but if they look reddish to you, they are likely S. falli.

… Peter W. Messer, 27 November, 2021 - 12:58pm

Schizogenius woes

I found this thread while browsing BG photos of Schizogenius after a frustrating session with Whitehead's key. Even with male genitalia, I have been unable to match any of my southwestern US material with his descriptions and figures.
As far as color goes, I suspect it will turn out to be useless in the end. I have long series from light sheet sampling that show a range from pale yellow to dark brown and all appear to be the same species. Likewise, I'm convinced that "Clivina rufa" is simply a teneral C. acuducta, which commonly fly to lights along with fully "cured" individuals.

… Curt Harden, 20 November, 2023 - 9:08pm

Moved

Moved from Schizogenius.

… margarethe brummermann, 21 January, 2011 - 5:06pm

Moved

Moved from Clivinini.

… margarethe brummermann, 8 January, 2011 - 11:04pm

is this the same specimen?

Grooved furrows on the head are indicative of Schizogenius, not usually Clivina.

… Blaine Mathison, 8 January, 2011 - 7:03pm

yes

it is the same specimen, I found an older life-shot

… margarethe brummermann, 8 January, 2011 - 11:03pm