The genus Medetera (Diptera: Dolichopodidae) in the Czech Republic with first records of twelve species Author Kejval, Zbyněk Muzeum Chodska, Chodské náměstí 96, CZ- 344 01 Domažlice, Czech Republic Author Pollet, Marc 0000-0001-5198-5928 Research Institute for Nature and Forest (INBO), Herman Teirlinckgebouw, Havenlaan 88 bus 73, B- 1000 Brussels, Belgium & Royal Belgian Institute of Natural Sciences (RBINS), Operational Directory Taxonomy and Phylogeny, Entomology, Vautierstraat 29, B- 1000 Brussels, Belgium. mpollet. doli @ gmail. com; https: // orcid. org / 0000 - 0001 - 5198 - 5928 mpollet.doli@gmail.com text Zootaxa 2023 2023-03-09 5254 1 69 93 http://dx.doi.org/10.11646/zootaxa.5254.1.4 journal article 10.11646/zootaxa.5254.1.4 1175-5326 7710858 A7B92D56-B267-4EBE-9896-187B043274F7 M. brevitarsa Parent, 1927 ( Figs 5, 9 ) Material examined. Bohemia : Rozvadov (6341), Diana NR , 49°38′02″N 12°34′42″E , 500–530 m , Fagus , 13.vii.2020 , 1 ♁ ( MCH ) . Vranov (6542), Starý Hirštejn NR , top and SW slope, 49°28′20″N 12°42′51″E , 800–878 m , Fagus , 22.vi.2020 , 1 ♁ 1 ♀ ( MCH ) . Němčice (6544), Nový Herštejn NR , 49°24′53″N 13°3′55.5″E , 625–680 m , Fagus , 19.vi.2020 , 1 ♀ ( MCH ) . Česká Kubice, 6 km W (6642), Dlouhá skála Mt. (top env.), 49°22′15.5″N 12°46′28″E , 920–969 m , Fagus , 22.vii.2020 , 1 ♀ ( MCH ) . Pec (6642), Čerchov Mt. (top env.), 49°23′00″N 12°47′01″E , 1030–1041 m , Fagus , 5.vii.2020 , 1 ♀ ( MCH ) ; ditto, Čerchovské hvozdy NNR, SE slope, 49°22′49″N 12°47′43″E , 750–1025 m , Fagus , 5.vii.2020 , 1 ♁ 3 ♀♀ ( MCH ) ; ditto, 10.vii.2020 , 1 ♁ ( MCH ) ; Hamry, 2.5 km W (6744), Ostrý potok (stream) valley, 49°12′37″N 13°07′14″E , 850–1000 m , 16.vi.2022 , 1 ♁ ( MCH ) . Distribution. Belgium , Romania ( Negrobov & Naglis 2016 ), Sweden ( Persson et al. 2019 ) and Czech Republic (present paper), The species has most likely a much wider distribution in central Europe (M. Pollet, unpubl. data). Status in CZ. The first records are given herein. Ecology. Seemingly confined to natural submontane forests in Bohemia , where it occurs exclusively on tree trunks, in relatively humid sites. All above listed localities are nature reserves. In Belgium , it has also been encountered in lowland humid forests ( Pollet & Grootaert 1987 ). Remarks. Medium-sized, brownish-black species of the Medetera signaticornis –pinicola species group, with robust legs and fore tarsi slightly shorter (0.8 x) than fore tibiae ( Fig. 9 ). The characters of its hypopygium were never described; they appear to be strikingly similar to those of M. polonica Negrobov & Capecki, 1977 .