Sb 17(2)' 2016-045-055
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Silva Balcanica, 17(2)/2016 Forestry AND riparian lonG-LEGGED FLIES (DIPTERA: DOLICHOPODIDAE) from SARNENA SREDNA GORA Mountain WITH new records FOR BULGARIA Mihail Kechev University of Agribusiness and Rural Development, Bulgarian Scientific Selection-Technical Union - Plovdiv Abstract Thirty four dolichopodid flies were collected from six localities in Sarnena Sredna Gora Mountain, Bulgaria. Two species (Peloropeodes acuticornis (Oldenberg) and Neurigona erichsoni (Zetterstedt)) are new to the fauna of Bulgaria. Peloropeodes acuticornis is new to the Balkan Peninsula. Two other species previous described from Bulgaria (Teuchophorus chaetifemoratus Pollet et Kechev and T. medovoensis Kechev, Negrobov et Grichanov) are found in this survey and another localities for the country are given. Two dolichopodids are dominant in this region – Hercostomus gracilis (Stannius) (35.2%) and Poecilobothrus regalis (Meigen, 1824) (14.8%). The information over two-year survey is summarized in the faunistic list. Dolichopodid diversity is discussed and tabled together with previous investigation of Omurovska River. Key words: Dolichopodidae, Sarnena Sredna Gora Mountain, Omurovska River, Bulgaria Introduction Family Dolichopodidae, also called long-legged flies, is one of the most abundant families of true flies with more than 7200 described species worldwide. Most of them within the family are predators and dwell aquatic and semi-aquatic habitats. Relatively well studied regions in Bulgaria are Northern Black Sea Coast (Beschovski 1964, 1967, 1971, 1973), the Western Rhodopes (Kechev, 2007; 2010) and the Upper Thracian Plain (Kechev, 2012a, b; Kechev, Ivanova, 2015). The main purpose of this work is to investigate the dolichopodid diversity of poorly studied area such as Sarnena Sredna Gora Mountain and to complete the list of known species of Omurovska River. The survey in the present article can be considered as a continuation of three-year (2011-2013) investigation of dolichopodid diversity along the banks of Omurovska River (Kechev et al., 2014). Most of the records of this previous study were from its lower and middle courses and one species from the upper course (near Medovo village) was described as new to the science – Teuchophorus medovoensis Kechev, Negrobov et Grichanov. The current work presents two-year investigation of Omurovska River upper tributaries situated in Sarnena Sredna Gora Mountain. Studied Area Sarnena Sredna Gora is the third part of Sredna Gora mountain range situated in Central Bulgaria. The mountain stretches between the valley of Stryama River to the west and Toundzha River to the east. To the north it reaches the southern parts of 45 Karlovo, Kazanlak and Sliven hollows, Mezhdenishkiya gorge of Toundzha River and south slopes gradually sink in the Upper Thracian Plain and Yambol Field. Five out of six studied localities are on Omurovska River tributaries. The river rises in Sarnena Sredna Gora Mountain, 1 km northeast of Chakalova Polyana Peak, 820 m a.s.l. The total length is 58 km. It flows southwards in the western and southwestern Chirpan Heights in a narrow valley, where several villages are situated. Two main tributaries converge (Suha River is the right tributary, and Starata River is the left one) near the villages of Malak Dol and Golyam Dol, where the actual Omurovska River begins. At Partizanin village, the river enters Upper Thracian Plain . In the plain, the river becomes wider and shallower. It flows into Maritsa River (120 m), 600 m to the south of Krushevo village, Municipality of Parvomay. Material AND METHODS The material was collected by sweep net in the period 2015-2016 from six localities in Sarnena Sredna Gora Mountain (Fig.1, Table 1). After collecting, the adults were put in vials containing 95% ethanol. The samples were sorted in laboratory by using stereomicroscope. Literature by Negrobov, Stackelberg (1969), Grichanov (2007) was used for the species determination, and for distribution of species works by Negrobov (1991), Pollet (2011) and Grichanov (2014). The faunistic list gives the following information: place and date of collecting, number of specimens (male and female), name of collector and distribution. The material was stored in alcohol in the author’s collection at University of Agribusiness and Rural Development - Plovdiv. Results Faunistic list DIAPHORINAE Schiner, 1864 Argyra leucocephala (Meigen, 1824) Material examined: Chehlare, 18.VIII.2015, 2♂♂; Markovo village, 12.VI.2016, 2♂♂, 22 ♀♀, Kavakliika hut, 28.VI.2016, 3♀; Dolno Novo Selo village, 17.IX.2016, 1♂, 1♀, leg. M. Kechev. Distribution: Europe; North Africa: Algeria, Tunisia. Chrysotus femoratus Zetterstedt, 1843 Material examined: Markovo village, 22.IX.2016, 1♂, 4♀♀, leg. M. Kechev. Distribution: Europa; Transpalaearctic species. DOLICHOPODINAE Latreille, 1809 Dolichopus excisus Loew, 1859 Material examined: Markovo village, 12.VI.2016, 1♂; Markovo village, 22.IX.2016, 1♂, leg. M. Kechev. Distribution: Europe (except North), South Russia, Turkmenistan, Tajikistan. Dolichopus griseipennis Stannius, 1831 46 Fig.1. Map of the studied area with localities of collecting Material examined: Naydenovo village, 25.VII.2015, 1♀; Dolno Novo Selo village, 17.IX.2016, 1♂, 3♀♀, leg. M. Kechev. Distribution: Europe; North Africa: Algeria; Middle Asia. Dolichopus latilimbatus Macquart, 1827 Material examined: Markovo village, 19.VI.2016, 1♂, leg. M. Kechev. Distribution: Europe, South Russia, Kazakhstan, Mongolia. Dolichopus nubilus Meigen, 1824 47 Table 1. Localities of collecting N Altitude, Geographical Place Habitat m coordinates Mixed beech forests. The driest place on all six studied habitats. Dominant trees - 42 28’ 59” N 1 Fagus sylvatica L., Acer heldreichii B., Acer Kavakliika hut 920 25 13’ 22” E ⁰ pseudoplantanus L. and Carpinus betulus L. ⁰ On the banks of a cool brook overshadowed 2 Gorno Novo Selo 42 27’ 37” N by deciduous trees dominated by Ulmus sp., 560 village 25 13’ 59” E Alnus sp. and Fraxinus sp. ⁰ On the banks of the reservoir with ⁰ deciduous forest. Dominant tree: Quercus Dolno Novo Selo 42 25’ 19” N 3 415 frainetto Ten. and on the dam wall - Robinia village 25 15’ 20” E ⁰ pseudoacacia L. ⁰ On the banks of a cool brook overshadowed 42 24’ 47” N by deciduous trees dominated by Salix sp. 4 Chehlare village 405 25 10’ 24” E ⁰ and Ulmus sp. ⁰ On the banks of a cool brook overshadowed Naydenovo 42 23’ 47” N by deciduous trees dominated by Populus sp., 5 328 village 25 14’ 42” E Salix sp. and Fraxinus sp. ⁰ On the banks of the reservoir with ⁰ 42 22’ 21” N deciduous trees. Dominant species: Quercus 6 Markovo village 287 25 13’ 52” E cerris L. and Quercus pubescens Willd. ⁰ ⁰ Material examined: Markovo village, 12.VI.2016, 1♂, 1♀, leg. M. Kechev. Distribution: Europe; Asia: China, Kazakhstan, Tajikistan and Uzbekistan. Dolichopus salictorum Loew, 1871 Material examined: Markovo village, 19.VI.2016, 1♂, leg. M. Kechev. Distribution: Bulgaria, Czech Republic, Hungary, Italy, Poland, Slovakia. Dolichopus signifer Haliday, 1838 Material examined: Naydenovo village, 18.VII.2015, 1♂, 1♀; 25.VII.2015, 3♂♂, 1♀, leg. M. Kechev. Distribution: Europe, Russia (Kabardino-Balkaria, Krasnodar, Rostov, Voronezh), Ukraine (Crimea, Odessa); Asia: Afghanistan, Kazakhstan, Tajikistan, Turkmenistan, Turkey, Uzbekistan; North Africa: Morocco. Gymnopternus aerosus (Fallen, 1823) Material examined: Chehlare village, 25.VI.2015, 1♂, leg. M. Kechev. Distribution: Bulgaria, Romania, South Russia (Alania, Krasnodar), Ukraine; Transpalaearctic species: Taiwan. Hercostomus gracilis (Stannius, 1831) Material examined: Naydenovo village, 18.VII.2015, 2♂♂, 2♀♀; 25.VII.2015, 43♂♂, 13♀♀; Chehlare village, 18.VIII.2015, 18♂♂, 8♀♀; Dolno Novo Selo village, 11.IX.2015, 3♂♂, 1♀; Naydenovo village, 18.VII.2016, 25♂♂, 12♀♀; 15.VIII.2016, 22♂♂, 14♀♀; Dolno Novo Selo village, 17.IX.2016, 2♂♂, 1♀, leg. M. Kechev. 48 Distribution: Europe, Russia (Blagoveshchensk, Buryatia, Dagestan, Kabardino- Balkaria, Krasnodar, Krasnoyarsk, Omsk, Samara, Yakutia), Ukraine (Crimea, Poltava); Iran, Kazakhstan, Mongolia. Hercostomus parvilamellatus (Macquart, 1827) Material examined: Markovo village, 12.VI.2016, 4♂♂; 19.VI.2016, 2♂♂, leg. M. Kechev. Distribution: Europe. Hercostomus plagiatus (Loew, 1857) Material examined: Chehlare village, 25.VI.2015, 1♂, leg. M. Kechev. Distribution: Europe; North Africa: Algeria, Tunisia. Poecilobothrus chrysozygos (Wiedemann, 1817) Material examined: Markovo village, 12.VI.2016, 1♂, 1♀, leg. M. Kechev. Distribution: Europe, Russia (Adygea, Karachai-Cherkessia, Krasnodar, Lipetsk, Mordovia, Moscow, Voronezh, Ural, Khabarovsk), Turkey, Ukraine (Kharkiv, Kherson, Odessa); Iran, Kazakhstan. Poecilobothrus regalis (Meigen, 1824) Material examined: Markovo village, 28.V.2015, 4♂♂, 1♀; Chehlare village, 25.VI.2015, 11♂♂, 5♀; Naydenovo village, 18.VII.2015, 5♂♂, 5♀♀; 25.VII.2015, 3♂♂, 2♀♀; Markovo village, 23.V.2016, 3♂♂, 1♀; 19.VI.2016, 10♂♂, 8♀♀; Kavakliika hut, 28.VI.2016, 1♂; Markovo, 12.VII.2016, 8♂♂, 3♀♀, leg. M. Kechev. Distribution: Europe. Sybistroma impar Rondani, 1843 Material examined: Naydenovo village, 25.VII.2015, 2♂♂, 8♀♀; Markovo, 19.VI.2016, 2♂♂, leg. M. Kechev. Distribution: Bulgaria, Greece, Hungary, Israel, Italy, Romania, Russia (Krasnodar), Turkey. NEURIGONINAE Aldrich, 1905 Neurigona erichsoni (Zetterstedt, 1843) New to Bulgaria. Material examined: Chehlare village, 25.VI.2015, 1♂; Naydenovo villave, 25.VII.2015, 1♂; Markovo village, 19.VI.2016, 1♂, 1♀; Gorno Novo Selo village, 28.VI.2016, 1♂, leg. M. Kechev.