taxonID	type	description	language	source
6FE54AA057825692B666E86DEB66A3BA.taxon	materials_examined	Material examined. Bulgaria: 4 Sofia region, lake Iskyr, 29. VI. 2002, 1 ♂ 5 ♀, leg. V. Vedenina, song recordings in 1 ♂ (CV); Moldova: 10 Vinnitza region, Volchinetz, ab. 5 km W Mogilev-Podol'sky, 17. VII. 1997, 1 ♂, leg. V. Vedenina (CV); Romania: 11 Dobrudzha region, 14 km S Constantza, Ephoria-Nord, 09. IX. 1997, 2 ♂ 3 ♀, leg. A. Loginov (ZMMU); Ukraine: 8 Ivano-Frankovsk region, environs of Mikulichin, 09 - 14. VIII. 1996, 6 ♂ 1 ♀, leg. V. Vedenina (CV); 9 Khmelnitsky region, 28 km NNW of Kamenetz-Podolsky, near Beloe, 25. VI. 2010, 1 ♂ 1 ♀, leg. V. Vedenina, song recordings in 1 ♂ (CV); 12 Odessa region, Kiliya district, environs of Vilkovo, 30. VI. 1997, 2 ♂, leg. V. Vedenina (CV); 13 Odessa region, ab. 30 km NW of Belgorod-Dnestrovsky, near Krasnaya Kosa village, 29. VI. 1997, 1 ♂, leg. V. Vedenina (CV); 16 Nikolaev region, Pervomaisk district, surr. of Kuripchino village, 27.06.1997, 1 ♂, leg. V. Vedenina (CV); 18 Cherkassy region, Kanev district, Kanev reserve, 12 - 18. VI. 1996, 12 ♂ 5 ♀, leg. V. Vedenina (ZMMU); 19 Kirovograd region, environs of Aleksandriya, 04. VII. 1997, 2 ♂ 2 ♀, leg. V. Vedenina (CV); 20 Nikolaev region, Pervomaisk district, environs of Kuripchino village, beach of Yuzhny Bug river, 27. VI. 1997, 1 ♂ 1 ♀, leg. V. Vedenina, song recordings in 2 ♂ (CV); 22 Poltava region, Mirgorod district., V. Sorochintzy, 27 - 28. VI. 1985, 4 ♂ 5 ♀, 25 - 28. VII. 1993, 3 ♂ 5 ♀, 24. VII- 26. VIII. 1994, 5 ♂, leg. V. Vedenina, song recordings in 6 ♂ (ZMMU, CV); 25 Dnipro region, Pavlograd district, Samara reserve, 12 - 15. VII. 1996, 4 ♂ 4 ♀, leg. V. Vedenina (CV); Russia: 1 Kaliningrad region, environs of Svetlogorsk, forest road, 16. VIII. 2005, 3 ♂ 1 ♀, leg. N. Kulygina, song recordings in 1 ♂ (CV); 14 St-Peterburg, 27.08.1997, 1 ♂, leg. V. Vedenina (CV); 32 Voronezh region, Novaja Usman' district, near Maklok village, 29. VI. 2006, 3 ♂, leg. N. Kulygina (CV); 35 Kostroma region, Manturovo district, environs of. Anosovo, 07 - 08. VIII. 2009, 2 ♂ 1 ♀, leg. V. Vedenina, song recordings in 2 ♂ (CV); 40 Saratov region, Krasny Kut district, near D'yakovka, 17. VII. 2004, 3 ♂, leg. D. Tishechkin, song recordings in 2 ♂ (ZMMU).	en	Tarasova, Tatiana, Tishechkin, Dmitry, Vedenina, Varvara (2021): Songs and morphology in three species of the Chorthippus biguttulus group (Orthoptera, Acrididae, Gomphocerinae) in Russia and adjacent countries. ZooKeys 1073: 21-53, DOI: http://dx.doi.org/10.3897/zookeys.1073.75539, URL: http://dx.doi.org/10.3897/zookeys.1073.75539
6FE54AA057825692B666E86DEB66A3BA.taxon	distribution	Distribution. (Fig. 1). The range of this species extends from Europe to the south-western part of European Russia. In Europe this species occurs over a wide range, excluding the central and southern part of the Iberian Peninsula and Greece (Ragge and Reynolds 1988, Sirin et al. 2010). Further to the east, it occurs in the Baltic republics, Belarus, Moldova, and Ukraine. The eastern border of the range lies on the longitude of the Saratov and Kostroma regions of Russia. The species tends to be mesophilic. The range of C. brunneus overlaps with that of C. maritimus in south-eastern Europe, Moldova, Ukraine, and the south-eastern part of European Russia.	en	Tarasova, Tatiana, Tishechkin, Dmitry, Vedenina, Varvara (2021): Songs and morphology in three species of the Chorthippus biguttulus group (Orthoptera, Acrididae, Gomphocerinae) in Russia and adjacent countries. ZooKeys 1073: 21-53, DOI: http://dx.doi.org/10.3897/zookeys.1073.75539, URL: http://dx.doi.org/10.3897/zookeys.1073.75539
49E8D33FC4555380BB0357B98E5FA5F2.taxon	materials_examined	Material examined. Bulgaria: 4 Sofia region, lake Iskyr, 29. VI. 2002, 6 ♂ 5 ♀, leg. V. Vedenina (ZMMU); 5 Vraca region, ab. 3 km S of Vraca, Vracniki Balekan National Park, Memorial Botev, 30. VI. 2002, 2 ♂, leg. V. Vedenina (CV); Greece: 2 Phthiotis, environs of Timfristos, NE slope, 27. V. 1998, 1 ♂, leg. V. Vedenina (CV); 3 Phthiotis, ab 40 km NW Lamia environs of Lautra Kaitsas, 26. V. 1998, 3 ♂ 1 ♀, leg. V. Vedenina (CV); 6 Macedonia, Drama, Mt Falakro above Volakas, 5 km NE Elatia, 24. VII. 2004, 1 ♂, leg. V. Vedenina, song recordings in 2 ♂ (CV); 7 Macedonia, Drama, W. Rodopi, 5 km NE Elatia, 23. VII. 2004, 1 ♂ 1 ♀, leg. V. Vedenina (CV); Ukraine: 15 Odessa region, near Sychavka, 03. VII. 1997, 5 ♂, leg. V. Vedenina (ZMMU); 17 Kirovograd region, Novoukrainka district, environs of Pomoshnaya, 26. VI. 1997, 2 ♂, leg. V. Vedenina, song recordings in 2 ♂ (CV); 21 Kherson region, Chernomorsky nature reserve, Solyonoozerny area, 25. VII- 05. VIII. 1995, 2 ♂ 1 ♀, leg. V. Vedenina (CV); 23 Crimea, Bakhchisaray district, 3 - 4 km E of Gluboky Yar, 11. VI. 1997, 4 ♂, leg. D. Tishechkin, song recordings in 4 ♂ (ZMMU); 24 Crimea, Simferopol' district, environs of Pereval'noe, 20. VI. 1997, 3 ♂, leg. D. Tishechkin, song recordings in 3 ♂ (ZMMU); 25 Dnipro region, Pavlograd district, Samara reserve, 12 - 15. VII. 1996, 6 ♂, leg. V. Vedenina (CV); 26 Crimea, Kerch peninsula, E shore of Kazantip bay, environs of cape Chagany, 26. VI. 1997, 1 ♂, leg. D. Tishechkin, song recordings in 1 ♂ (ZMMU); 27 Kharkov region, Izjum district, Kamyshevacha, 15. VII. 1996, 5 ♂ 1 ♀, leg. V. Vedenina (ZMMU); 28 Kharkov region, Izjum, Kremenetz hill, 15. VII. 1996, 1 ♂, leg. V. Vedenina (CV); Abkhazia: 34 Sukhumi region, slopes near highway Sukhumi - Gagra, 21 - 22. X. 2005, 5 ♂ 5 ♀, leg. V. Vedenina, song recordings in 3 ♂ (ZMMU); Russia: 33 Krasnodarsky krai, near highway Krasnaya Poljana - Adler, 22. X. 2005, 4 ♂ 3 ♀, leg. V. Vedenina, song recordings in 4 ♂ (CV); 39 Saratov, slopes near Polivanovka, 28. VI. 2020, 2 ♂, leg. V. Vedenina, song recordings in 2 ♂ (CV); 41 Saratov region, Krasnokutsk district, near D'yakovka, 28. VI. 2020, 6 ♂ 1 ♀, leg., song recordings in 5 ♂ (CV); 43 Saratov region, SW from Khvalynsk, environs of Ul'yanino village, 19. VII. 2005, 3 ♂, leg. D. Tishechkin, song recordings in 3 ♂ (ZMMU); 44 Saratov region, ab. 6 km NW of Ershov, 22. VI. 2018, 3 ♂, leg. V. Vedenina (CV); 45 Saratov region, 15 km NE Ozinki, 23. VI. 1996, 4 ♂, leg. D. Tishechkin, song recordings in 4 ♂ (ZMMU); 42 Krasnoyarsk region, Astrakhan' district, environs of Dosang railway station, 03. VII. 2000, 1 ♂, leg. D. Tishechkin, song recordings in 1 ♂ (ZMMU); 75 Irkutsk region, Olkhon district, 20 km from Jelantsy to strait Olkhonskie vorota, 15. VII. 2003, 4 ♂, leg. D. Tishechkin, song recordings in 4 ♂ (ZMMU); 77 Buryatia, Barguzin valley, Ina river, 4 - 5 km downstream from Ina, 17. VII. 2007, 3 ♂, leg. D. Tishechkin, song recordings in 2 ♂ (ZMMU); 78 Chita region, Klichka range, ab. 15 km W Klichka, 22. VII. 2003, 2 ♂, leg. D. Tishechkin, song recordings in 1 ♂ (ZMMU); 79 Amur region, 15 km S Svobodny, environs of Malaya Sazanka, 05. VII. 1995, 4 ♂, leg. D. Tishechkin, song recordings in 4 ♂ (ZMMU); 80 Primorskiy kray, Pogranichny district, environs of Barabash-Levada, 20. VII. 1995, 3 ♂, leg. D. Tishechkin, song recordings in 3 ♂ (ZMMU); 81 Primorskiy kray, Pogranichny district, Khanka lake, 15 km S Turiy Rog, 21. VII. 2006, 3 ♂, leg. D. Tishechkin, song recordings in 3 ♂ (ZMMU); 82 Southern Sakhalin, environs of Sokol, 02. VIII. 2015, 4 ♂, leg. D. Tishechkin, song recordings in 3 ♂ (ZMMU); Kazakhstan: 62 Almaty region, 40 km N from Almaty, environs of Kara-Oi village, 12. VI. 2017, 1 ♂, leg. D. Tishechkin, song recordings in 1 ♂ (ZMMU); 63 Almaty, botanical garden, 07. VII. 1994, 3 ♂, leg. D. Tishechkin, song recordings in 3 ♂ (ZMMU); 65 Almaty region, ab. 20 km NE of Taldykorgan, 02. VII. 2016, 4 ♂, 1 ♀, leg. V. Vedenina & T. Pushkar, song recordings in 1 ♂ (CV); 66 Kazakhstan, Almaty region, near Kapal, 01. VII. 2016, 1 ♂, leg. V. Vedenina & T. Pushkar, song recordings in 1 ♂ (CV); 67 Kazakhstan, Almaty region, ab. 2.5 km W of Kapal, 02. VII. 2016, 4 ♂ 4 ♀, leg. V. Vedenina & T. Pushkar, song recordings in 2 ♂ (ZMMU); 68 Urzhar region, 27 km SSE Taskesken, 5.5 km NW Karakol, 24. VI. 2019, 1 ♂, leg. D. Tishechkin, song recordings in 1 ♂ (ZMMU); Turkmenistan: 49 Ahal region, Kaka district, 6 - 7 km S of Dushak, 14. V. 2014, 3 ♂, leg. D. Tishechkin, song recordings in 3 ♂ (ZMMU); Kyrgyzstan: 51 Batken region, Leilek district, Turkestan range, 12 km S from Katran village, 11. VII. 2014, 1 ♂, leg. D. Tishechkin, song recordings in 1 ♂ (ZMMU); 53 Batken region, N shore of Tortkul'skoye reservoir, 12 km WSW Batken, 09. VII. 2014, 1 ♂, leg. D. Tishechkin, song recordings in 1 ♂ (ZMMU); 54 Jalal-Abad region, Chatkal range, Sary-Chelek nature reserve, environs of Arkyt, 22. VII. 2008, 2 ♂, leg. D. Tishechkin, song recordings in 1 ♂ (ZMMU); 57 Chuy region, Jayyl district, Karakol river, 10 km upstream from confluence with Suusamyr, 07. VII. 2016, 1 ♂, leg. D. Tishechkin, song recordings in 1 ♂ (ZMMU); 58 Chuy region, Djumgal river, between Baizak and Chaek, 30. VI. 2014, 1 ♂, leg. D. Tishechkin, song recordings in 1 ♂ (ZMMU); 64 Issyk-Kul' region, Tossor river, 18 km E from Kadji-Sai, 15. VII. 2013, 1 ♂, leg. D. Tishechkin, song recordings in 1 ♂ (ZMMU).	en	Tarasova, Tatiana, Tishechkin, Dmitry, Vedenina, Varvara (2021): Songs and morphology in three species of the Chorthippus biguttulus group (Orthoptera, Acrididae, Gomphocerinae) in Russia and adjacent countries. ZooKeys 1073: 21-53, DOI: http://dx.doi.org/10.3897/zookeys.1073.75539, URL: http://dx.doi.org/10.3897/zookeys.1073.75539
49E8D33FC4555380BB0357B98E5FA5F2.taxon	distribution	Distribution. (Fig. 1). C. maritimus is a widespread trans-Palearctic species. It includes C. bornhalmi from the Balkans and Anatolia (Willemse et al. 2009; Sirin et al. 2010; Skejo et al. 2018) and as C. biguttulus eximius from Sukhumi, Abkhazia (Mistshenko 1901). It also occurs in Moldova and southern Ukraine (Heller et al. 1998). In the territory of Russia, its range stretches from Krasnodarsky krai to Sakhalin along the southern border. This species also occurs in Caucasus, southern Kazakhstan, Turkmenistan, very likely Uzbekistan, Kyrgyzstan, Mongolia, northern-east China, Korea and Japan (Storozhenko 2002). The ranges of C. maritimus and C. brunneus overlap in Eastern Europe, Ukraine and the south-eastern part of European Russia. Moreover, C. maritimus and C. brunneus often occur syntopically. The range of C. maritimus also overlaps with the range of C. miramae in the south-eastern part of European Russia and in surroundings of the Baikal Lake, however, they do not occur in the same biotopes.	en	Tarasova, Tatiana, Tishechkin, Dmitry, Vedenina, Varvara (2021): Songs and morphology in three species of the Chorthippus biguttulus group (Orthoptera, Acrididae, Gomphocerinae) in Russia and adjacent countries. ZooKeys 1073: 21-53, DOI: http://dx.doi.org/10.3897/zookeys.1073.75539, URL: http://dx.doi.org/10.3897/zookeys.1073.75539
49E8D33FC4555380BB0357B98E5FA5F2.taxon	description	Description. (Table 1, Fig. 3). The head structure as in genus. Ratio length of vertical diameter of eye to maximum length of foveolae 2.8 - 3.4 in ♂, 3.0 - 3.2 in ♀; ratio minimum interocular distance to length of subocular groove 0.6 - 0.8 in ♂, 0.7 - 0.9 in ♀. Antennae filiform. Prozona is slightly shorter than metazona; median carina is distinct and continuous. Lateral pronotal keels are distinctly incurved, ratio between minimum and maximum widths 2.3 - 2.6 in ♂, 2.3 - 2.9 in ♀. In western populations keels are more angled, min / max width ratio up to 3.0. Tympanal aperture slit-like, 2.3 - 2.8 times in ♂, 2.6 - 2.8 in ♀ as long as broad. Fore and hind wings well developed in both sexes, wings far surpassing the apices of the hind knee. Costal area of fore wing has maximum width in the middle part or in the last third of the wing. Subcostal area narrow, its width 0.25 - 0.3 mm in ♂, 0.15 - 0.2 mm in ♀ (measured on the line of maximal width of costal area). Ratio width of fore wing to C & Sc areas 3.1 - 3.5 in ♂, 4.4 - 4.7 in ♀. Apical constriction (distance from C and Sc confluence to the wing tip) prolonged, ratio length of apical constriction to the wing length 3.3 - 3.8 in ♂, 3.5 - 3.8 in ♀. Stigma far from the wing tip, ratio length between stigma center and the wing tip to the wing length 2.4 - 2.7 in ♂, 2.3 - 2.5 in ♀. Hind femur gracile, ratio femur length to maximum width 4.4 - 4.6 in ♂, 4.4 - 4.7 in ♀. Stridulatory file consists of one row, its length nearly equal to the distance between last peg and tip of hind knee. The number of stridulatory pegs 100 - 168 in ♂, 104 - 157 in ♀. Body coloration varies from light straw to dark brown, sometimes with a red tone. The ventral side of the body lighter than dorsal side, and densely pubescent. Fore wings smoky, with a few dark spots in M area. Hind wings transparent at the base and slightly smoky in apical part, distal half of C area smoky or brownish. Hind femur in the inner side with black lengthwise line. Hind knees dark brown or blackish, particularly on upper lobe. Hind tibiae orange or reddish. Measurements in mm. Body length: 15 - 18 in ♂, 19 - 26 in ♀, pronotum length: 3.1 - 3.4 in ♂, 4.1 - 4.4 in ♀, fore wing length: 14.1 - 15.5 in ♂, in 17.2 - 18.5 in ♀, fore wing width 3.1 - 3.4 in ♂, 3.2 - 3.5 in ♀, hind femur length: 9.8 - 10.6 in ♂, 12.8 - 14.1 in ♀.	en	Tarasova, Tatiana, Tishechkin, Dmitry, Vedenina, Varvara (2021): Songs and morphology in three species of the Chorthippus biguttulus group (Orthoptera, Acrididae, Gomphocerinae) in Russia and adjacent countries. ZooKeys 1073: 21-53, DOI: http://dx.doi.org/10.3897/zookeys.1073.75539, URL: http://dx.doi.org/10.3897/zookeys.1073.75539
E12C84A5C31F58C5AF461C78B5A7213B.taxon	materials_examined	Material examined. Russia: 29 Krasnodarsky kray, environs of Gelendzhik, 06. X. 2011, 8 ♂ 4 ♀, leg. V. Vedenina & L. Shestakov, song recordings in 3 ♂ (ZMMU); 30 Krasnodarsky kray, Gelendzhik district, environs of Aderbievka, 07. VII. 1997, 8 ♂ 8 ♀, leg. D. Tishechkin, song recordings in 4 ♂ (ZMMU); 31 Krasnodarsky kray, Gelendzhik district, environs of Praskoveevka; 12. VII. 1997, 2 ♂, leg. D. Tishechkin (ZMMU); 36 N. Caucasus, N. Ossetia, environs of Alagir, Ardon river floodplain, 09. VIII. 1990, 2 ♂ 2 ♀, leg. M. Bukhvalova, song recordings in 2 ♂ (ZMMU); 37 N. Caucasus, N. Ossetia, Sunzhensky range, environs of Elkhotovo, 10 - 12. VIII. 1990, 2 ♂ 1 ♀, leg. M. Bukhvalova (ZMMU); 38 N. Caucasus, N. Ossetia, Sunzhensky range, environs of Bekan lake, 14. VIII. 1985, 3 ♂ 3 ♀, leg. D. Tishechkin (ZMMU); 47 Orenburg region, environs of Studentzy, 14. VII. 2012, 1 ♂, leg. V. Vedenina & L. Shestakov, song recordings in 1 ♂ (CV); 48 Orenburg region, environs of Guberlya railway station, 07 - 09. VII. 1996, 37 ♂ 13 ♀, leg. D. Tishechkin, song recordings in 5 ♂ (ZMMU), 29. VI. 2018, 1 ♂, leg. V. Vedenina & N. Sevastianov, song recordings in 1 ♂ (CV); 69 Altai Republic, ab. 26 km SE of Ongudai, environs of Kupchegen', 08. VIII. 2017, 5 ♂ 3 ♀, leg. V. Vedenina & N. Sevastianov, song recordings in 1 ♂ (ZMMU); 70 Tyva republic, environs of Erzin, Tore-Kchan' lake, 31. VII. 1989, 1 ♂ 1 ♀, leg. S. Byzov (ZMMU); 71 Tyva republic, environs of Erzin, Erzin river floodplain, 20. VII- 06. VIII. 1989, 3 ♂ 3 ♀, leg. M. Bukhvalova, song recordings in 3 ♂ (ZMMU); 72 Tyva republic, environs of Erzin, Tes-Kchem river floodplain, 03 - 06. VIII. 1989, 3 ♂, leg. M. Bukhvalova (ZMMU); 73 Irkutsk region, Nizhneudinsk district, Uk river estuary, confluence with Uda, 02. VII. 2003, 5 ♂, leg. D. Tishechkin, song recordings in 5 ♂ (ZMMU); 74 Buryatia, Selenginsk district, 5 km N from Novoselenginsk, Selenga river valley, 07. VII. 2007, 5 ♂, leg. D. Tishechkin, song recordings in 5 ♂ (ZMMU); 76 Buryatia, Zaigrayevo district, 10 km Onokhoy, Bryanka river valley, 21. VII. 2007, 3 ♂, leg. D. Tishechkin, song recordings in 3 ♂ (ZMMU); Kazakhstan: 46 West-Kazakhstan region, ab. 50 km W of Ural'sk, environs of Kamenka, 23. VI. 2018, 5 ♂, leg. V. Vedenina & N. Sevastianov (ZMMU); 50 Kostanay region, Naurzum nature reserve, 04 - 11. VIII. 1938, 13 ♂ 6 ♀, leg. Derevitskaya, 11. VIII- 25. IX. 1939, 3 ♂ leg. Pokrovskyi, 24. VII. 1947, 1 ♂ A. Formozov (ZMMU); 52 Akmola region, Tselinograd district, ab. 4 km SWW from Zhaynak, 09. VII. 2019, 3 ♂, leg. V. Vedenina, N. Sevastianov & T. Tarasova, song recordings in 1 ♂ (CV); 55 Akmola region, Arshaly district, 7 km N Vishnevka, Ishym river floodplain, 11. VII. 2019, 3 ♂, leg. V. Vedenina, N. Sevastianov & T. Tarasova, song recordings in 2 ♂ (CV); 56 Akmola region, Jerementau district, 4.5 km NE from Baysary, 03. VII. 2019, 2 ♂, leg. V. Vedenina, N. Sevastianov & T. Tarasova, song recordings in 2 ♂ (CV); 59 Pavlodar region, Ekibastuz district, ab. 3 km W of Schidert, 04. VII. 2019, 6 ♂ 1 ♀, leg. V. Vedenina, N. Sevastianov & T. Tarasova, song recordings in 3 ♂ (ZMMU); 60 Pavlodar region, Zhelezinsky district, near Pyatiryzhsk, 22. VII 1 ♂ 1 ♀ leg. Ingenitskyi (ZMMU), 05. VII. 2019, 2 ♂, leg. V. Vedenina, N. Sevastianov & T. Tarasova, song recordings in 2 ♂ (CV); 61 Pavlodar region, Terenkol' district, bank of the Irtysh river, 05. VII. 2019, 6 ♂, leg. V. Vedenina, N. Sevastianov & T. Tarasova, song recordings in 1 ♂ (CV).	en	Tarasova, Tatiana, Tishechkin, Dmitry, Vedenina, Varvara (2021): Songs and morphology in three species of the Chorthippus biguttulus group (Orthoptera, Acrididae, Gomphocerinae) in Russia and adjacent countries. ZooKeys 1073: 21-53, DOI: http://dx.doi.org/10.3897/zookeys.1073.75539, URL: http://dx.doi.org/10.3897/zookeys.1073.75539
E12C84A5C31F58C5AF461C78B5A7213B.taxon	distribution	Distribution. (Fig. 1). The range of this species stretches in the form of a ribbon from the Black Sea coast eastwards to Transbaikalia. C. miramae occurs in Krasnodarsky krai and Caucasus, Orenburg region, northern Kazakhstan, Altai, Tyva, Irkutsk region and Transbaikalia. The ranges of C. miramae and C. maritimus overlap in the south-eastern part of European Russia and in surroundings of Baikal Lake.	en	Tarasova, Tatiana, Tishechkin, Dmitry, Vedenina, Varvara (2021): Songs and morphology in three species of the Chorthippus biguttulus group (Orthoptera, Acrididae, Gomphocerinae) in Russia and adjacent countries. ZooKeys 1073: 21-53, DOI: http://dx.doi.org/10.3897/zookeys.1073.75539, URL: http://dx.doi.org/10.3897/zookeys.1073.75539
E12C84A5C31F58C5AF461C78B5A7213B.taxon	description	Description. (Table 1, Figs 2, 3). The head structure as in genus. Ratio length of vertical diameter of eye to maximum length of foveolae 3.2 - 3.6 in ♂, 2.8 - 3.2 in ♀; ratio minimum interocular distance to length of subocular groove 0.6 - 0.8 in ♂, 0.7 - 1.0 in ♀. Antennae filiform. Median carina distinct and continuous. Prozona slightly shorter than metazona. Lateral pronotal keels distinctly incurved, ratio minimum to maximum widths 2.1 - 2.6 in ♂, 2.4 - 2.6 in ♀. Tympanal aperture 2.8 - 3.3 times in ♂, 2.8 - 3.4 in ♀ as long as broad. Fore and hind wings well developed in both sexes, wings far surpassing the apices of the hind knee. Width of costal area of fore wing reaches its maximum in the middle or in the last third part (Fig. 2 A, B). Width of subcostal area 0.3 - 0.35 mm in ♂, 0.2 - 0.23 mm in ♀ (measured along the line of maximal width of costal area). Ratio width of fore wing to width of C & Sc areas 3.0 - 3.2 in ♂, 4.3 - 4.5 in ♀. Length of apical constriction (distance from C and Sc confluence to the wing tip) is a quarter of the wing length. Ratio length between stigma center and the wing tip to the wing length 2.1 - 2.8 in ♂, 1.8 - 1.9 in ♀. Hind femur gracile, ratio femur length to maximum width 4.5 - 4.9 in ♂, 4.6 - 4.9 in ♀. Stridulatory file remarkably long in both sexes: distance between the last peg and the knee tip 2 - 2.7 times in ♂, 1.7 - 2.4 in ♀ as large as length of stridulatory file. In males, stridulatory pegs form one row and have different density along the file (Fig. 2 C). Most proximal part of stridulatory file starts with several rare and dispersed pegs that are followed by more densely disposed pegs. The second part of stridulatory file more prolonged, consisting of more rare pegs with stable inter-peg intervals. In the third, most distal part the peg density decreases proportionally to the length of stridulatory file, and the pegs often do not lay in one raw. In females, stridulatory pegs arranged in one row and distributed rarer than in males. The peg density decreases from the proximal towards the distal parts. The number of stridulatory pegs 118 - 182 in ♂, 98 - 157 in ♀. Body coloration similar to coloration of C. maritimus. Measurements in mm. Body length: 14 - 18 in ♂, 18 - 24 in ♀, pronotum length: 2.9 - 3.3 in ♂, 3.8 - 4.4 in ♀, fore wing length: 13.3 - 14.6 in ♂, in 16.4 - 18.3 in ♀, fore wing width 3.1 - 3.6 in ♂, 3.2 - 3.5 in ♀, hind femur length: 9.7 - 10.4 in ♂, 12.6 - 14.0 in ♀.	en	Tarasova, Tatiana, Tishechkin, Dmitry, Vedenina, Varvara (2021): Songs and morphology in three species of the Chorthippus biguttulus group (Orthoptera, Acrididae, Gomphocerinae) in Russia and adjacent countries. ZooKeys 1073: 21-53, DOI: http://dx.doi.org/10.3897/zookeys.1073.75539, URL: http://dx.doi.org/10.3897/zookeys.1073.75539
