Palaearctic Species of the Genus Medetera (Diptera: Dolichopodidae) Палеарктические Виды Рода Medetera (Diptera: Dolichopodidae)
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ZOOSYSTEMATICA ROSSICA, 25(2): 333–379 27 DECEMBER 2016 Palaearctic species of the genus Medetera (Diptera: Dolichopodidae) Палеарктические виды рода Medetera (Diptera: Dolichopodidae) O.P. NEGROBOV* & S. NAGLIS О.П. НЕГРОБОВ, С. НАГЛИС O.P. Negrobov, Voronezh State University, 1 Universitetskaya pl., Voronezh 394006, Russia. E- mail: [email protected] S. Naglis, Institute of Evolutionary Biology and Environmental Studies, University of Zurich, 190 Winterthurerstrasse, CH-8057 Zurich, Switzerland. E-mail: [email protected] An updated checklist and a revised key to the males of Palaearctic species of the genus Medetera including all 180 species and 3 subspecies are provided; 27 species are included in the key for the first time. Medetera belgica Parent, M. bilineata Frey, M. kowarzi Negrobov, M. miki Negrobov, M. peloria Negrobov, M. perplexa (Becker), M. sphaeropyga Negrobov, M. tarasovae Negrobov, and M. thunebergi Negrobov, stat. resurr., are removed from synonymy based on the differences in the male genitalia. Составлен полный список и дополненная определительная таблица самцов всех 180 па- леарктических видов и 3 подвидов рода Medetera; 27 видов впервые включены в табли- цу. Виды Medetera belgica Parent, M. bilineata Frey, M. kowarzi Negrobov, M. miki Negrobov, M. peloria Negrobov, M. sphaeropyga Negrobov, M. tarasovae Negrobov и M. thunebergi Negrobov, stat. resurr., востановлены из синонимов на основе различий в строении гениталий сам- цов. Key words: Palaearctic Region, checklist, synonymy, key, Diptera, Dolichopodidae, Medetera Ключевые слова: Палеарктика, список видов, синонимия, определительная таблица, Diptera, Dolichopodidae, Medetera INTRODUCTION (Yang, 1999), one species from Morocco (Grichanov & Vikhrev, 2009), one species The genus Medetera Fischer von Wald- from Tunisia (Grichanov, 2010), three spe- heim, 1819 comprises 180 species and 3 cies from Turkey (Naglis, 2013), seven spe- subspecies in the Palaearctic Region. The cies from Switzerland (Naglis & Negrobov, latest comprehensive taxonomic work on 2014a, 2014b), and two species from Russia the Palaearctic species is the revision of and Mongolia (Negrobov & Naglis, 2015). the subfamily Medeterinae by Negrobov Moreover, many taxonomic and nomencla- & Stackelberg (1972, 1974a, 1974b, 1977). tural changes have been published. In this Since then, 27 new Palaearctic species of paper, the following species are removed Medetera have been described: one species from synonymy based on the differences in from the Great Britain (Allen, 1976), one the male genitalic structures: M. belgica Par- species from Poland (Negrobov & Capecki, ent, 1936, M. bilineata Frey, 1915, M. kowarzi 1977), five species from Russia (Negrobov, Negrobov in Negrobov & Stackelberg, 1974, 1979; Negrobov & Golubtsov, 1991), one M. miki Negrobov in Negrobov & Stack- species from Spain (Rampini & Canzoneri, elberg, 1974, M. peloria Negrobov, 1967, 1979), four species from Japan (Masunaga M. sphaeropyga Negrobov in Negrobov & & Saigusa, 1998), one species from China Stackelberg, 1974, M. tarasovae Negrob- ov in Negrobov & Stackelberg, 1974, and * Corresponding author. M. thunebergi Negrobov, 1967. Negrobov & © 2016 Zoological Institute, Russian Academy of Scienсes 334 O.P. NEGROBOV & S. NAGLIS. PALAEARCTIC SPECIES OF MEDETERA Stackelberg (1972, 1974a, 1974b) provided Stackelberg (1972, 1974a, 1974b, 1977) are a key to all known Palaearctic species, which indicated with an asterisk (*), both in the was published in German. Later on, the keys checklist and in the key. The figures taken were published for several regional faunas: from Negrobov & Stackelberg (op. cit.) are the Great Britain (Assis Fonseca, 1978), the mostly given with changes or redrawn. Caucasus and the Mediterranean (Gricha- In describing the hypopygium, dor- nov, 2007), North Europe (Grichanov, sal and ventral refers to the position prior 2006), Japan (Masunaga & Saigusa, 1998), to rotation and flexion, i.e. in figures top and China (Yang et al., 2011a, 2011b). is morphologically ventral and bottom is The adults of Medetera are often found dorsal. Morphological terminology follows on vertical surfaces such as tree trunks, walls McAlpine (1981), except the terminology or rocks. They are predators on small soft- for thoracic chaetotaxy, wing veins and the bodied arthropods such as mites, Collem- genitalia, which follows Bickel (1985). bola, Psocoptera and small Diptera (Ulrich, Unlike many other dolichopodid genera, 2005). The larvae live under bark of dead or the males of Medetera have few secondary dying trees and are known as predators of sexual characters, and the examination of bark beetles. Species of the genus are of con- the male genitalia is usually necessary for siderable importance as agents of biological reliable identification. control (Bickel, 1985). The larvae can de- The following morphological abbrevia- stroy up to 32% of the bark beetle larvae of tions are used: ac, acrostichal setae; ad, an- Hylurgops palliatus (Gyllenhal, 1813) in Fin- terodorsal setae; av, anteroventral setae; dc, land (Nuorteva, 1956). dorsocentral setae; Dsur, dorsal arm of sur- stylus; Hyp, hypandrium; pd, posterodorsal MATERIAL AND METHODS setae; pm, presutural supraalar setae; ppl, proepisternal setae; pv, posteroventral se- The checklist includes all known Pa- tae; sa, postsutural supraalar setae; sr, pre- laearctic species. For each species, the ori- sutural intraalar setae; Vsur, ventral arm of ginal combination with the year of publi- surstylus. cation and page number is provided. The For the hypopygial structures, see also synonyms are listed in chronological order. Figs 1–2. All taxonomic and nomenclatural changes In Negrobov & Stackelberg (1971) some have been considered. The distributional terms for the male genitalia and wing veins data are mainly according to Pollet (2013) are different from those used in the present and Yang et al. (2006); the newer records paper. Both the terminologies are summa- are considered, the doubtful records are rized in Table 1. omitted. The countries are listed in alpha- betical order; in addition, the distribution CHECKLIST OF THE PALAEARCTIC by the zoogeographical regions outside the SPECIES AND SUBSPECIES OF Palaearctic is also given. MEDETERA The key to males is basically based on Negrobov & Stackelberg (1972) but ex- М. abstrusa Thuneberg, 1955 panded to include all subsequently de- scribed species. The errors found in this Medetera abstrusa Thuneberg, 1955: 132. key have been corrected. For each species, Distribution: Belgium, Czech Republic, new diagnostic characters are added, in Denmark, Great Britain, Estonia, Finland, particular, the hypopygial characters are France, Germany, Hungary, Ireland, Neth- consequently used and the respective lit- erlands, Norway, Russia (European part, erature references to the figures are given, Siberia), Slovakia, Sweden, Switzerland, if available. The figures from Negrobov & Ukraine. © 2016 Zoological Institute, Russian Academy of Scienсes, Zoosystematica Rossica 25(2): 333–379 O.P. NEGROBOV & S. NAGLIS. PALAEARCTIC SPECIES OF MEDETERA 335 Figs 1–2. Male genitalia of Medetera (M. helvetica): 1, hypopygium, in lateral view (Dsur, dorsal arm of surstylus; Hyp, hypandrium; Vsur, ventral arm of surstylus); 2, hypandrium, in ventral view (1–2, from Naglis & Negrobov, 2014). Scale: 0.1 mm. Table 1. Morphological terminology used in the present paper and in Negrobov & Stackelberg (1971). Present paper Negrobov & Stackelberg (1971) Surstylus / surstyli Gonopode / Gonopoden Epandrial lobes Surstyli Aedeagus Aedeagus Vein M Vein M1+2 Vein CuA Vein M3+4 М. acanthura М. albescens albescens (Parent, 1925) Negrobov et Thuneberg, 1970 Oligochaetus albescens Parent, 1925: 154. Medetera acanthura Negrobov et Thuneberg, Distribution: Egypt. 1970: 143. Distribution: Finland, Sweden, Norway, М. albescens lutescens (Parent, 1925) Russia (central and southern European Oligochaetus albescens lutescens Parent, 1925: part), Switzerland. 158. Distribution: Egypt. М. adjaniae Gosseries, 1988 М. albiseta Parent, 1927 Medetera breviseta Parent, 1927: 8. Medetera adjaniae Gosseries, 1988: 305 (new Medetera albiseta Parent, 1927: 15. name for Medetera breviseta Parent, 1927, nec Thomson, 1869). Distribution: France. Distribution: Belgium, Estonia, Finland, М. albisetosa (Parent, 1925) France, Germany, Russia (northern Euro- pean part), Sweden, Switzerland. Oligochaetus albisetosus Parent, 1925: 158. © 2016 Zoological Institute, Russian Academy of Scienсes, Zoosystematica Rossica 25(2): 333–379 336 O.P. NEGROBOV & S. NAGLIS. PALAEARCTIC SPECIES OF MEDETERA Distribution: Egypt. part, eastern Siberia), Slovakia, Sweden. Oriental Region: Japan (Ryukyu Islands). М. alexandri Negrobov, 1979 Nearctic Region: Canada, USA. Medetera alexandri Negrobov, 1979: 656. М. araneipes (Parent, 1929) Distribution: Russia (Kuril Islands). Oligochaetus araneipes Parent, 1929: 43. М. alpicola Naglis et Negrobov, 2014 Distribution: Egypt. Afrotropical Re- gion: Sudan. Medetera alpicola Naglis et Negrobov, 2014: 88. Distribution: Switzerland. М. armeniaca Negrobov in Negrobov & Stackelberg, 1972 М. ambigua (Zetterstedt, 1843) Medetera armeniaca Negrobov in Negrobov & Hydrophorus ambiguus Zetterstedt, 1843: 456. Stackelberg, 1972: 285. Distribution: Belgium, Czech Republic, Distribution: Armenia, Azerbaijan. Denmark, Estonia, Finland, France, Ger- many, Great Britain, Hungary, Italy, Neth- М. arrogans (Parent, 1927) erlands, Poland, Russia (European part except south, eastern Siberia), Slovakia, Oligochaetus