Istrian snake
| Istrian snake | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Bicolorana kraussi | ||||||||||||
| ( Padewieth , 1900) |
The Istrian bite insect ( Metrioptera kraussi ) is a long- nose insect from the subfamily of the Tettigoniinae within the superfamily of the grasshopper .
features
The Istrian bite insect is very similar to the two-colored bite insect and reaches about the same body length. The abdomen is pointed, the head is relatively large. The lower legs of all pairs of legs have tiny spines, whereas those of the front pairs of legs are longer and further apart. The wings reach to the middle of the abdomen, the antennae are about body length. The color varies greatly from light green to olive green, two-tone green and brown to yellow-brown. In the two-tone variation, the top of the pronotum , the wings, the back and the lower and sometimes the thighs are colored brown. Often or always a more or less blurred dark or black spot is formed over the eye, which is interrupted by a light line obliquely backwards. There is a light whitish or dark line between the top of the pronotum and the sides of the pronotum. There is a wide black longitudinal band on each of the back legs. The wings can be slightly darkly spotted, which distinguishes this shrimp from other species in the genus Metrioptera . The compound eyes are brown with a dark point in the middle, the antennae are dark brown. The male has pointed appendages at the end of the 10th (last) back plate, which are about half as long as the plate itself. In the case of the two-colored bite, the appendages only reach a third of the segment. The subgenital plate of the female bears a central longitudinal furrow, which is missing in the other species.
Way of life and distribution
The Istrian bite insects predominantly inhabits long grassy meadows or other open landscapes with a lot of vegetation in Istria on the Balkan Peninsula and is mostly found on higher herbaceous plants. The range of the species is very small. So far it has only been found in the border area between Croatia and Slovenia and in north-eastern Italy ; it does not occur in Germany. It is also said to occur in the European part of Russia and on islands in the Barents Sea . Adults appear from July to September.
Systematics
The species was described in 1900 by Franjo Dobijaš (Padewieth) under Platycleis Kraussi and in 1931 by Willy Adolf Theodor Ramme under the scientific name Metrioptera kuntzeni . Later it was placed in the subgenus Bicolorana and also in the subgenus Metrioptera together with the bicoloured bite insect . The former sub-genus is now partially regarded as a separate genus , therefore a synonym used is Bicolorana kuntzeni .
swell
literature
- Heiko Bellmann: The Cosmos Locust Leader. Determine the species of Central Europe with certainty. Franckh-Kosmos Verlags GmbH & Co. KG, Stuttgart 2006, ISBN 3440104478
Web links
Individual evidence
- ↑ Josip Skejo, Fran Rebrina, Nikola Tvrtković, Stanislav Gomboc, Klaus-Gerhard Heller: More than a century old 'Platycleis Kraussi case' finally resolved (Tettigoniidae: Platycleidini) . In: Zootaxa . tape 3990 , no. 4 , July 28, 2015, ISSN 1175-5334 , p. 497 , doi : 10.11646 / zootaxa.3990.4.2 ( biotaxa.org [accessed September 26, 2019]).