Identification of Orthoptera (grasshoppers, crickets, etc.)

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25.07.2011 13:04, Guest

Help us determine the exact type.
Location of shooting Sergiev Posad district.

Dear Spaniot, in my opinion, it looks like Chortippus dichrous Ev., but it's hard for me to say what kind of species it is, because you only photographed it from the side. It would be nice to take a picture from an upper angle, so that you can better see the side keels of the pronotum. Moreover, it is a female. For females, it is not quite easy to identify insects from the genus Chortippus. I advise you not to catch female hortippus singly, but to look for a pair of mating ones in the grass and put them in a separate container. Or catch only males. Do you have anything to say about my locust squid (on the same web page, five posts higher than yours)?

25.07.2011 14:32, Dichelima

Chorthippus dichrous (Ev.,1859)- south ridge. Southern steppe European-East Siberian species.?

I also think that Chorthippus dichrous should not be found in the Sergiev Posad district, but the external structure looks similar to me. I will say directly - I do not know what kind of view it is, but I can give you my train of thought. Apparently, the lateral keels of the pronotum are almost or completely straight. On the territory of the former USSR, there are mainly 4 species with such side keels. The radial vein of the elytra is not curved S-shaped, there is no white stripe in the subcostal field, the elytra significantly extend beyond the hind knees. So it's not Ch. albomarginatus or Ch. dorsatus. Ch. loratus lives only in the south of Ukraine. Ch. dichrous remains, but it also lives in the southern steppes. So, if it is not Ch. dichrous, then it is either Ch. albomarginatus (sometimes females do not have a white stripe and a straight radius) or Ch. dorsatus(sometimes the elytra go beyond the hind knees), or another species that is not one of the four listed above.
Let's not make any quick conclusions about your appearance just yet, but wait for the opinion of a well-versed specialist.

This post was edited by Dichelima - 25.07.2011 14: 41

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25.07.2011 18:03, Dichelima

To be honest, I have some cases when I can't say with certainty which species a captured horse from the genus Chortippus belongs to, but I think many people will be interested to know my experience in determining insects from this genus. I do not catch individuals singly, but look for a pair of mating insects in the grass. Skates always populate steppe areas in large numbers and therefore there should be no problem that some species will be missed - a diligent observer will sooner or later meet a pair of each of the types of skates that live in this area. I catch them in a separate container. At home, I carefully examine the appearance of both the male and female, and determine by the determinant to the species. This is how I collect a certain number of types of skates and compare them with each other. It is very important to remember the appearance of each species well. This will prevent you from catching the same species repeatedly. Skates are characterized by significant variability in color and morphology. Therefore, it is necessary to preserve a number of different forms of the same species. Insects for the collection should only be selected as whole-such that all the limbs and whiskers are intact, as well as that the elytra, wings and other parts of the body are intact. They should never be dried by sticking them on a needle. All must be preserved in wine alcohol. Labels should be written in pencil and tied on a string. Cans of alcohol containing insects of the same species, but with different variations in terms of color and morphology, should be kept not at room temperature,but in the freezer. Immediately after killing, it is necessary to place the body of the insect in alcohol (96%), keep it at room temperature for a day and put it in the freezer. So alcohol does not turn yellow, and the insect spoils more slowly. The larger your collection, the easier it is for you to navigate individual views. If you already have a sample of one species, then you will have something to compare one female or male with when you catch them one by one. Visually, it is easy to do this, but it is most difficult if you have never seen representatives of both sexes of the species that you have come across. My collection includes Ch. appricarius L., Ch. biguttulus L., Ch. dorsatus Zet., Ch. mollis Charp., Ch. vagans (Ev.) Zn., Ch. albomarginatus De Geer, Ch. parallellus Zett. I didn't find any others.

This post was edited by Dichelima - 25.07.2011 18: 24

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30.07.2011 22:28, Dichelima

In the afternoon, on the edge of an oak grove and meadow (in a gully), in three hours of continuous search, I mowed down 2 females and one male Isophya sp.

Ukhty, how interesting! I've never met at least one isophia before. How I envy you! You could not take a picture of the females not only from the side, but also from the upper angle and from the lower side, as well as the male, also from three angles, and post these photos in the highest possible resolution, preferably not directly on the forum, but on a file sharing site (http://fastpic.ru/) - you can upload large-size photos there? It is possible not on the forum, but on my mail (Dichelima@gmail.com). Also, take a picture of the animal's body from the front, so that the forehead is visible, from the back, so that the location of the ceres is visible, and the inner edge of the thigh at the base. It is advisable to take several photos from different points on the same angle.

I suspect that this is I. rossica or I. stepposa. How to distinguish them exactly!??

I haven't seen a single member of this genus firsthand, so I don't dare tell you the species, but when you send me photos from different angles, I'll be able to tell you for sure. In I. rossica, the hind thighs are without spines from below, or there are one or two (but no more) spines, and not on the underside, but at the top of the hind thighs. In I. stepposa, the spines should be on the underside, and the posterior edge of the pronotum with an indistinct arcuate notch.

Are these rare species?

I live in Ukraine, but I have never met these species. Yes, most likely they are very rare. I advise you to pickle them-this way their bodies will not shrink, their color will be more or less preserved, their insides will also be pickled, and you will be able to have data on the entire morphology as a whole, and not just their appearance. Rare species are of great theoretical interest.

This post was edited by Dichelima - 30.07.2011 22: 36

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05.08.2011 15:24, Penzyak

Yes, the find is interesting - for so many years for the first time I catch such a large sawtail in my region...

Alas, the devil confused me - 2 females were mowed down by me immediately in the first zakos and I thought that there were "enough" of them here, I was too lazy to return to the car with a backpack and cans for preserving live insects... and put them in the stain. Soon I catch a male-also there... Ugh, almost three hours in the sun (+ 32C in the shade!) and I gave up... Grasshoppers and fillies abound... and there are no isophies AT ALL !??
So the house urgently had to be dried - and the largest female and dissected so as not to rot. Unfortunately, I didn't take many photos of" raw materials"...
I suspect that this is not quite a sexually mature insect... After analyzing a number of features, the following should be considered:
1. the female has wings with a rounded back edge...
2. Pronotum without constriction in the middle part, its upper edge is straight...
3. It is indicated that this species should be in color: ... yellow stripes stretch along the sides of the body, sometimes a reddish-brown shade below with narrower stripes...
4. Differs from I. stepposa in the absence of spines in the middle part of the lower edge of the hind thighs...
...I come to the conclusion that this is Isophya rossica B.-Bienko.
But, in the literature, I also find mention of the third type of isophy, I. doneciana...
What will the specialists say? Or is it all in the fields???

Pictures:
picture: Isophya_rossica_BBienko_________________________2011.jpg

picture: Isophya_rossica_BBienko_________________________2011.jpg

Isophya_rossica_BBienko_________________________2011.jpg — (170.25к)

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05.08.2011 21:50, Dichelima

Thank you so much for your photos of the male and female! Can I use a higher resolution photo?

.. for so many years, for the first time I catch such a large sawtail in my region...

But these are not sawtails, but isophia. Sawtails are called grasshoppers from the genus Poecilimon.

...I come to the conclusion that this is Isophya rossica B.-Bienko.

Yes, it looks like it is. I agree that this is Isophya rossica B.-Bienko.

But, in the literature, I also find mention of the third type of isophy, I. doneciana...

No, this is not I. doneciana B.-Bienko; in I. doneciana B.-Bienko, the female's elytra are very short, barely protruding from under the pronotum, and the male's elytra are much shorter than the pronotum. From your photos and descriptions, I can tell that this is Isophya rossica B.-Bienko.

You soak the pryoptera on a straightener (even very large ones) in 96% ethanol for a day at room temperature, and then put the container in the freezer (temperature below zero) for a month (or longer). Then you can remove them from the alcohol, prick them on a needle and dry them in the air. So they do not spoil when dried (do not rot) and retain their shape (do not wrinkle).

This post was edited by Dichelima - 05.08.2011 21: 51

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10.08.2011 22:02, Dichelima

...help me find out one straight-winged bastard...

Dear codesh, the territory of Azerbaijan today remains very poorly studied in terms of fauna, including erect-winged insects. There are only 14 species of the genus Saga in the world (and your animals are representatives of the genus Saga), and only such a species as Saga ephippigera Fischer von Waldheim, 1846 is reliably recorded on the territory of your state. Most likely, this is this species, although I do not have data on the morphology of dybok. So I can't say anything for sure. They are both males. As far as I know, all representatives of this genus of insects are predators, so they can not be plant pests. I advise you to post photos of your pickled animals from different angles (top, bottom, side, front, back) again on this forum and wait, maybe the message will be read by a specialist who is one hundred percent sure of the correct definition of the species.

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