Identification of beetles (Coleoptera)

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01.08.2016 20:29, Egor4ick

Tell me...is this exactly Lucanus cervus? Stavropol Territory, Kochubeyevsky district, surrounding villages of Kochubeyevsky (female) and Belovsky farm (male). The female was found crawling in a cornfield on 26.08.2016, the male was found alive in the house on 19.07.2016. Just about the findings of the deer beetle in our region from any sources I have not heard, BUT in my childhood (10-12 years ago) caught it right in the village of Kochubeevsky, and the specimens were medium and large. For the last 10 years, I have never met him in our region, and my friends have not seen him either. Coordinates of the finds: W-44.6811, D-41.7982 for the female, W-44.6370, D-41.6559 for the male.

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02.08.2016 12:34, Barnaba

Thanks! In general, it coincided with my assumptions!)
There are several Gideons, both with a larger horn and with a smaller one. What is the subspecies in Bali?

It's not entirely clear. Formally, it is nominative, just like in Java. But to the east (Sumbawa, Sunda, Timor, Flores), X. gideon sondaicus Silvestre, 2002 was described relatively recently. I have not seen any papers that specifically study the subspecies belonging of populations from Bali and Lombok. In general, the "gideon" group has a large number of forms that deviate from each other to varying degrees, the so-called "subspecies" are not equivalent in isolation and degree of divergence, and many former subspecies are now considered independent species or subspecies forms of other species. Plus a very high ontogenetic intrapopulation variability.

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02.08.2016 12:50, Mantispid

It's not entirely clear. Formally, it is nominative, just like in Java. But to the east (Sumbawa, Sunda, Timor, Flores), X. gideon sondaicus Silvestre, 2002 was described relatively recently. I have not seen any papers that specifically study the subspecies belonging of populations from Bali and Lombok. In general, in the gideon group, there are a large number of forms that deviate from each other to varying degrees, the so-called "subspecies" are not equivalent in isolation and degree of divergence, and many former subspecies are now considered independent species or subspecies forms of other species. Plus a very high ontogenetic intrapopulation variability.

So I didn't get it. Now everything is clear. Thanks!

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02.08.2016 20:57, Fornax13

He would rather publish the definitive tables, so as not to suffer with the" green"...

In the process

of working with our Microrhagus "sensu stricto" still have to suffer. Especially with the Far East, of which there are already five, and not one, as in the DV determinant.
As for the bug in the photo, it reminds me more of lepidus. Pygmaeus is only known to me from the European part, but its proportions are slightly different. But lepidus seems to be much more widespread in the Palearctic than previously thought. Khnzoryanovsky sibiricus, described from a single female from the Novosibirsk region, is likely to be a synonym of lepidus (I'll come back and take a closer look at the holotype). And what's more, a portion of the Far Eastern foveolatus from the mainland appears to be lepidus too. The shield of the bug in the photo is very raised?

02.08.2016 21:06, Fornax13

Zhenya, compared with Soronia grisea and S. punctatissima. I didn't find any others.
That's all I could get out of my soapbox. (It's a pity that the mustache broke off). In my opinion, it is still closer to S. punctatissima.

Yes, and I think that punctatissima. Samets, the front legs of grisea should be simple, but punctatissimus just like that, with a kink. That's why I immediately said about punctatissima. On the Far East there is also a fracta, but there the males ' hind legs seem to be very curved. I don't know much about it, though. Take a look, please, in the DV determinant about the signs of sexual dimorphism in fracta, because I don't have a book on my hands right now, and I'll have to download it for a long time