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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Beetles (Coleoptera) » Adephaga » Ground Beetles (Carabidae) » Harpalinae » Harpalitae » Harpalini » Anisodactylina » Anisodactylus » Subgenus Aplocentrus (Anisodactylus Subgenus Aplocentrus) » Anisodactylus caenus
Photo#592772
Anisodactylus caenus - female
Copyright © 2011 Brad Barnd

Anisodactylus caenus - Female
Tippecanoe County, Indiana, USA
May 29, 2006
Size: 8.8 mm
This keys to A. caenus vs. A. laetus.

I favor A. caenus due to:
+the dark femora (legs entirely pale in A. laetus)
+pronotum widest near base (widest "about middle" in A. laetus per Lindroth; Ciegler states "widest before middle")
+relative wideness of body (A. laetus is apparently much narrower)

The Anisodactylus laetus in the guide here looks like mine, and I wonder if it is not A. caenus instead.

Update: Specimen donated to Peter Messer (PWMC), 2023.
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Contributed by Brad Barnd on 6 November, 2011 - 4:43pm
Last updated 15 August, 2023 - 10:17pm

I agree with "Anisodactylus caenus"
for your specimen here. Since that 2008 post regarding my image-based guess of "Anisodactylus laetus" noted in your link, I did happily acquire in 2009 a reference specimen of true "A. caenus" (OK) which agrees with all images under discussion. Therefore, feel free to update my previous post along with a link to this useful discussion. Thanks Brad for reminding me of my old post which I should have later edited myself.
… Peter W. Messer, 6 November, 2011 - 5:44pm login or register to post comments

 
Thanks Peter
Any comments you may have for the Anisodactylus I posted last night (here) would be appreciated.
… Brad Barnd, 6 November, 2011 - 5:55pm login or register to post comments

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