Ground Beetle Poecilus cupreus/versicolor

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Ground Beetle Poecilus cupreus/versicolor

Postby wirralbirder on Sat Sep 05, 2015 6:44 pm

Ground Beetle Poecilus cupreus/versicolor:

2015 Sep 05_6550.JPG
Poecilus cupreus/versicolor ???

Hi All,

Another ID poser. I think that this is a member of the Poecilus genus. I am leaning towards P.cupreus as the first two segments of the antennae are reddish and not dark like the rest. It was recorded during a sunny part of the day making its way across a path into some long grass at Burton Mere wetlands on 04th September 2015.

Cheers,
H

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Re: Ground Beetle Poecilus cupreus/versicolor

Postby DonSten on Sat Sep 05, 2015 7:43 pm

Hello Harry,

It is Poecilus but it's not really possible to give a definite ID to the species. The antennal feature you mention is no use as both P.cupreus and P.versicolor have pale basal segments. What you need to look at is whether it has punctures between the eyes and 8 or more fairly fine setae on the inner edge of the hind tibiae - if so to both of these it's P.cupreus. Lack of punctures and less, coarser setae means P.versicolor.

I can't see the leg feature or make out any punctures. You need a much clearer image showing the back legs and preferably another of the head taken obliquely. The middle legs possibly suggest P.versicolor and that does favour damper situations - but that is a tentative ID. :)

Cheers,
Don

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Re: Ground Beetle Poecilus cupreus/versicolor

Postby wirralbirder on Sun Sep 06, 2015 11:27 am

Hi Don,

Does this image help ??

Cheers,
H

Attachments
2015 Sep 05_6544.JPG
???
wirralbirder
 
Posts: 247
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Re: Ground Beetle Poecilus cupreus/versicolor

Postby DonSten on Sun Sep 06, 2015 8:27 pm

Slightly - it's still not clear enough really.

However, based on what I can see of the mid and hind legs, I still lean towards P.versicolor.

Cheers,
Don

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