Maintenance of Orthoptera

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22.07.2017 21:49, GrigorY66

Yes, this year we were as late as ever. Accordingly, from very late spring and cold summer. It was the first time they'd been so late, as far as I could remember.
Last year, the first decticuses were sung near Volkhov on June 20, and cantanzes were sung at the very beginning of July. And it happens at the end of June.
Now in nature, the oldest kants are predimago and already significantly swollen, the rest are pre-pre. Last week, relatively warm days contributed to their growth. But here again the rains have come and their development will slow down again.
So they will definitely have time to take wing in August and lay eggs. But it could have been worse.. if they did not have time to grow and lay eggs before autumn, their species in the Leningrad region would disappear). Pookaa in a few years they would have crawled here from the south..

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24.07.2017 22:23, Kolez

Kolez, mechnikov where-in St. Petersburg? I didn't see them here.
Here in Pskov there are many of them. On swamp meadows in sedge near small rivers. In a normal summer, they are the last to get winged in early August. And this... yes(
And Viridissima is also there in the Pytalovsky district. Only 300 km from Saint Petersburg. I've mapped the coordinates of their location to a small point population.

It is in St. Petersburg, in the Kolpino district. I found them in the field, close to ditches, but in very small quantities about 3 years ago. Now those places are already plowed up, I don't know if anyone else is there. But last year I found a new place swampy, overgrown with willow and there along the swamp you can find them. I even saw short-winged swordsmen))

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04.08.2017 23:53, ИНО

Oh, I really like these subspecies. I remind you that to give a population a subspecies status, it is necessary to prove that its representatives practically do not interbreed with other subspecies in nature. Moreover, if they cannot interbreed for some physiological reasons (for example, the offspring are not fertile, or even males do not fall for other women), this is no longer a subspecies, but a separate species. Subspecies are usually separated by geographical barriers. The question is: what kind of barrier lies between the Donbass, where long-winged decticus live, and the middle zone of Russia, where they are short-winged? If populations from different parts of the range freely exchange genes, but remain morphologically different due to natural selection under the influence of environmental factors specific to each area, then we are not talking about subspecies, but about geographical races. This was the case with humans until recently: whites in Central Africa were much more difficult to survive than Negroes, so they did not even reach South Africa in ancient times. Nevertheless, at the junctions of territories inhabited by blacks and territories inhabited by whites, there was a very active exchange of genetic information, as witnessed, for example, by the ancient Egyptians, or rather their remains and objects of fine art.

And D. v. gracilis, like they write, lives in the Caucasus, so it's not the same at all.

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