Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Calendar
Upcoming Events

Photos of insects and people from the 2024 BugGuide gathering in Idaho July 24-27

Moth submissions from National Moth Week 2024

Photos of insects and people from the 2022 BugGuide gathering in New Mexico, July 20-24

Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

Photos of insects and people from the 2019 gathering in Louisiana, July 25-27

Photos of insects and people from the 2018 gathering in Virginia, July 27-29


Previous events


TaxonomyBrowseInfoImagesLinksBooksData
Photo#483891
Looks like a Clivina - Schizogenius falli

Looks like a Clivina - Schizogenius falli
Sycamore Canyon, Santa Cruz County, Arizona, USA
August 8, 2009
Size: 5 mm

Images of this individual: tag all
Looks like a Clivina but the front legs are not quite as big.. - Schizogenius falli 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.

 
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

 
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.

 
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.

Moved
Moved from Schizogenius.

Moved
Moved from Clivinini.

is this the same specimen?
Grooved furrows on the head are indicative of Schizogenius, not usually Clivina.

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

Comment viewing options
Select your preferred way to display the comments and click 'Save settings' to activate your changes.