Hi,
Is this indeed Percus cylindricus Chaudoir, 1868 ?
Thank you!
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| Percus (Percus) strictus ellipticus (Porta 1901) - Carabidae http://www.entomologiitaliani.net/public/forum/phpBB3/viewtopic.php?f=143&t=42053 |
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| Autore: | T_18 [ 13/01/2013, 21:13 ] | ||
| Oggetto del messaggio: | Percus (Percus) strictus ellipticus (Porta 1901) - Carabidae | ||
Hi, Is this indeed Percus cylindricus Chaudoir, 1868 ? Thank you!
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| Autore: | T_18 [ 13/01/2013, 21:16 ] | |||||
| Oggetto del messaggio: | Re: Percus cylindricus Chaudoir, 1868 | |||||
The first two pictures is the same male, the others are different females: Grazie mille!
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| Autore: | aug [ 13/01/2013, 21:25 ] |
| Oggetto del messaggio: | Re: Percus cylindricus Chaudoir, 1868 |
No, in my modest opinion this is P. strictus ellipticus Porta. In the detail picture of the head you can observe several vertical corrugations behind the eye. This area is smooth in the P. cylindricus that normally has also almost no striations on the elitrae. You should observe the area behind the eye in each individual, in order to be sure for all samples. 
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| Autore: | T_18 [ 14/01/2013, 15:37 ] | ||||
| Oggetto del messaggio: | Re: Percus cylindricus Chaudoir, 1868 | ||||
Grazie Augusto! But, are they not too small for P. Strictus? I've tried to photograph the area bahind the eye a bit better, all three specimen:
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| Autore: | aug [ 15/01/2013, 9:19 ] |
| Oggetto del messaggio: | Re: Percus cylindricus Chaudoir, 1868 |
If I succeed in obtaining a good picture I will send it this evening. To me, all three of your samples appear to be P. strictus, but let's compare the images. Size doesn't matter very much: the P. strictus populations of the mountains are normally rather small, but P. cylindricus is even smaller, shiny, smooth and the body is depressed. |
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| Autore: | aug [ 15/01/2013, 20:01 ] |
| Oggetto del messaggio: | Re: Percus cylindricus Chaudoir, 1868 |
Now, here are a few pictures of a "topotypical" Percus cylindricus from Monte Tonneri (1100 m.a. s.l. elevation, South-East Sardinia). Here is a top view of the forward portion. You can distinctly observe the shape (smooth) behind the eyes In the following pic. a side view of the head and, eventually, an important character i.e. the deplaned elitrae outer edge: I hope these pictures will help in clarify your determination.
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| Autore: | T_18 [ 25/01/2013, 11:21 ] |
| Oggetto del messaggio: | Re: Percus (Percus) strictus ellipticus (Porta 1901) - Carabidae |
Hello Augusto, I'm still not fully convinced!  Mine show a deplaned pronotum base and a deplaned outer edge (but not completely till the apex).. Do you have a picture of genitalia? Could it be different species on one spot? Kind regards and thank yu very much! |
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