Geotrupini tribe

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Bad Den, 16.03.2007 2:02

Geotrupes (s. str.) spiniger Marscham, 1802
Kyrgyzstan, Jumgal-Too village, V. Seok gorge, 3075 m, 24.07.2000
Judging by the literature, it goes east only to Kopetdag. But according to Nikolayev, this view is obtained
user posted image

Geotrupes (s. str.) jakovlevi Semenov, 1891
Kyrgyzstan, SV macroslope of the Ferghana region, 18 km. SWZ pos. Kazarman, 1540 m, 14-16. 07. 2000

Geotrupes (s. str.) stercorarius (Linnaeus, 1758) ?
Nizhny Novgorod region, Arzamas-rn, St. Pustyn village, 22-28. 06. 1997
I'm not sure about it. By what characteristics can it be distinguished from G. baicalicus?
user posted image

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19.03.2007 15:30, Nimrod

Signs.
In stercorarius, the prong on the underside of the forelegs (see side) is connected to a broad, sharp blade. It is determined quite normally. I came across only typical uniforms in the training camps (dark green or green-blue, but never purple or blue).
spiniger-3rd from the top, the outer prong of the forelegs is sharply curved downwards. (There is a lot of this" comrade " everywhere, and, as a rule, it is always dark, or brown-blue, purple-blue up to black).
baicalicus-the 4th outer tooth of the front tibia from the top is thickened and about twice as thick as the adjacent teeth. (This "infection", for I can't think of any other word, is similar to everyone, even to G. olgae(Ols.). Therefore, it is most likely to focus on the distribution and not pay special attention to the color of this species).
But since there are also deviations among them, you should catch them in series - the more, the better, especially when you are not sure about the definition. According to Nikolayev, the genitals of this group do not work - they are almost identical to each other. I didn't check, because I have very little material on this group and some European species are missing.
P.S. Nikolaev also included in this list G. doueiGory., known from the North. Africa, Sicily, Sardinia, on the basis of the identity of the genitalia of males of this species with the species of the specified group, which is hardly justified, since it differs sharply from all other species in that there are no grooves on the elytra, there are strongly developed teeth along the outer edge of the jaws, angular cheek protrusions and armament of the front thighs of males. Therefore, it is advisable (from the point of view of taxonomy) for this species to remain monotypic in the genus StereopygeCosta.....
Sincerely,....

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27.10.2007 0:54, Nimrod

Yes, I completely forgot...
Mr. Trofim a has a female Odontaeus armiger Scop. ab. testaceus Muls in the picture. Its typical shape is black, or black-brown.
Basically, this message can also be considered as a clear example of how often it is difficult to determine whether a beetle is under - colored, or it is a color form. Link to the topic:
Under-colored beetles....

By Trypocopris vernalis. The species has been drastically reducing its numbers, especially in recent years. This is mainly directly related, unfortunately, to the rapid human activity. G. stercorarius also decreases in number, gradually being replaced by a more plastic G. spiniger..... In some places, of course, these types can be typed in thousands, but you still need to find it. And it's not a fact that the next day this place will no longer be there - you never know who will put their eyes on the site.
Sincerely,....

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