Identification of Orthoptera (grasshoppers, crickets, etc.)

Community and Forum → Insects identification → Identification of Orthoptera (grasshoppers, crickets, etc.)

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14.03.2014 22:05, Пензуит

Here is another photo of the penultimate filly, which was numbered 11. Here you can see the pronotum from above.

13.

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The following photos were also taken in the vicinity of Penza, also in August-September 2013. Here in the next two photos are the males of the same species or different? The first seems to be from Stenobothrus, and the second from Chorthippus. Or not?

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15.

But this one is the same as 15, or is it different? This one was taken on 22.09 in the same place.

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17.

18.

This one is similar to Chrysochraon dispar, but confuses the color. Too much yellow and striped for dispar? Taken on 03.08 in the same place.

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19.

Maybe this Chrysochraon dispar ? Taken on 14.07 in the same place.

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The next dark female and male were taken in September in the same place, most likely they did not tolerate frosts (the first frosts were in October). Is it of the same type or not?

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Thank you very much in advance!

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15.03.2014 18:39, PVOzerski

Pay attention to the antennae - they thicken at the end and with a white tip. 1-2 is not Chorthippus, but the same Gomphocerippus rufus.

As for the Chorthippus of the biguttulus group (3-4), I'm afraid they can't be overcome like this. The signs that are given in Beybiyenko and Mishchenko, in fact, work poorly. Especially if we add that there are some species that are not generally reflected in the reports for Russia (first of all, Ch. porphyropterus).

By and large, finding diagnostic signs for females of this group (and in photos 3 and 4, the female) is the task of the future. As for males, perhaps the most reliable thing is to watch the stridulation keel on the inner side of the rear thigh (or even better, listen to songs

). In St. Petersburg, for example, only brunneus and mollis are actually found from this group - in this situation, males can be distinguished by the shape of the leading edge of the elytra. But even when only mollis is added to them, things get dramatically more complicated.

This post was edited by PVOzerski - 03/15/2014 20: 49

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15.03.2014 22:24, Пензуит

Oh, I see. Thank you very much! It turns out that it is best to find some area where males of only one species from the biguttulus-brunneus-mollis group will sing. Preferably closed - for example, a clearing in the forest. If the males of only one of these species can be heard singing, then we can assume that all the females found will be of the same species. Is there an audio recording of the singing of males of these species on any website?
Should chorthippus macrocerus be distinguished by the red tibia of its hind legs? And if it is chorthippus pullus - in addition to the red shins, it should also have black tops of the thighs of the hind legs?
And more. I have green specimens of chorthippus in photos 10 and 14, which are less common in our country than gray and brown ones. Who in this group is more likely to be green? Or is it the same for everyone? Here's another female:

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Pictures:
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DSC09038_14.JPG — (194.39к)

15.03.2014 23:15, PVOzerski

As for the photos , I met such brunneus (in the Pskov region) and mollis (in Moldova). Biguttulus'ov such not seen (but seen with brown sides and green top a la Omocestus viridulus). But don't forget that you may also have porphyropterus.

As for the idea of "clearing" - it is difficult. These several species are very often found together. Even on city lawns, "clean" settlements of the same type can not always be found. Perhaps phenological differences can help out. In our North-West, brunneus takes wing and begins to sing much earlier than biguttulus (mollis is a rarer species, I have not yet studied its phenology).

As for the songs. For example, sounds.evol.nw.ru - a website that we once made. There are also entries and links to other resources. And the photo of Ch. pullus is also

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16.03.2014 23:08, Пензуит

Thank you very much! But this Calliptamus italicus or not? What confuses me is that it is usually written about the Italian prus that it gathers in large flocks, like locusts, and harms the agricultural sector. crops. But I personally meet these fillies in some places in very small numbers. Most often 1-2 in one place. For example, blueflies are much more common in the same places. Shot on 10.08 also near Penza.

Specially found a picture where you can see the inner part of the thigh.

1.
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I know about the next one - it's the Chinese greenhouse grasshopper Tachycines asynamorus. It is interesting that we have them on the streets of Penza. Although I only saw one of them, but the teacher is an entomologist from our university. he told me that this is not the first time they have been found on our streets. Do you have any in St. Petersburg? Taken on 26.08, it was most likely stepped on.

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And also about this. Clearly from the genus Platycleis, but what kind of species-please tell me.

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16.03.2014 23:31, PVOzerski

As for prus, yes, it's Italian. Its settlement in European Russia was discussed a bit on the same forum, http://molbiol.ru/forums/index.php?showtopic=267019

About 20 years ago, I met the "hothouse" in two places - in the greenhouses of the Botanical Garden of BIN and in the greenhouse of the Department of Botany of St. Petersburg State University. Last year I tried to search in BIN , but unfortunately I didn't find it. They say that they did not survive the treatment with new drugs. So take advantage of their appearance, you

might be able to introduce the species into the culture.

Platycleis s. str. for males to determine the photo I would not undertake. This is one of the few cases where definitional tables confidently lead to genitalia. It is most likely due to considerations of the range of P. grisea - but this, of course, is divination.

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