Click Beetle - Cardiophorus brevis

Moved

… margarethe brummermann, 7 February, 2012 - 6:52pm

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… margarethe brummermann, 7 February, 2012 - 6:52pm

Cardiophorus aptopoides Candeze, 1864

With literature help from Hume Douglas (who revised the eastern Cardiophorus), I believe this is C. aptopoides. Mine keys out well using Biologia Centrali-Americana, based on the presence of a tooth on the base of the claws. There is a similar species also in AZ, C. brevis Candeze, 1864. These two species, and C. vulneratus, have varying degrees of red on the pronotum but apparently vulneratus does not have the red on the elytra.
Also, the descriptions seem to concur my observations of the pronotal punctures (below).

Hume Douglas (pers. comm.) suggested aptopoides and brevis may be conspecific, with variable tarsal claws but they can be kept distinct until a formal revision is done.

You can check your specimens, but given that all three present like this from Madera Canyon in July, I am sure this image (and Kyle's) are also C. aptopoides.

I have a specimen of true vulneratus and will try to image it when I get to the cardiophorines of my current project :).

… Blaine Mathison, 6 February, 2012 - 5:34pm

So should

we create a new page?

… margarethe brummermann, 7 February, 2012 - 4:36pm

yes, please do

… Blaine Mathison, 7 February, 2012 - 5:31pm

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Moved from Cardiophorus.

… margarethe brummermann, 25 February, 2011 - 3:03pm

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Moved from Click Beetles.

… margarethe brummermann, 2 September, 2010 - 5:58pm

Cardiophorus

I collected this same species at Madera the day before, no idea on species name, though.

… Kyle Schnepp, 2 September, 2010 - 5:35pm

In the UAIC is a tray of C. vulneratus Horn

they look just like yours and mine. There's also a tray of Cardiophorus sp. with, among others, this pattern. Carl Olson cannot tell me why and I have no key to Elateridae. Blaine, any ideas?

… margarethe brummermann, 25 February, 2011 - 3:00pm

C. vulneratus

The MCZ type of vulneratus looks a bit different (here). I have a specimen from Cochise Co., AZ that looks like the MCZ type. But I also recently obtained a specimen from Pima Co., AZ (Madera Cyn) that looks more like yours and Kyle's. Not sure yet. Interesting all three of ours are from Madera Cyn...be cool if it was an isolated endemic!

Under the scope, they do not look conspecific (the MCZ-like one appears to have larger, coarser pronotul punctures).

Horn's original description does not mention other specimens, so not sure of the extent of variation. When all is said and done, I would not be surprised if this color form turned out to be something other than vulneratus.

To add to the fun, I have something similar from CA but with black pronotum (looks like C. togatus, but not sure if it gets that far west?).

… Blaine Mathison, 4 February, 2012 - 7:28pm

not sure...

the western species have yet to be worked on...Your det is good for now, though.

… Blaine Mathison, 22 May, 2011 - 1:28pm

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… margarethe brummermann, 12 August, 2010 - 11:38pm

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… john and jane balaban, 12 August, 2010 - 8:48pm