Eleven remarkable Diptera species, emerged from fallen aspens in Kivach Nature Reserve, Russian Karelia Polevoi, Alexei Ruokolainen, Anna Shorohova, Ekaterina Biodiversity Data Journal 2018 6 22175 22175 http://www.catalogueoflife.org/annual-checklist/2017/details/species/id/b9c29484b800e7dffeeced4fa3b973bc Alexander, 1950 Alexander 1950 Insecta Limoniidae Gnophomyia CoL Animalia Gnophomyia acheron Diptera 0 22175 Arthropoda species acheron  Materials  Type status: Other material. Occurrence: recordedBy: A. Polevoi; sex: 7 males, 2 females; Location: country: Russia; stateProvince: Karelia; locality: Kivach Nature Reserve; verbatimLatitude: 62.281; verbatimLongitude: 33.967; verbatimCoordinateSystem: Decimal degrees; verbatimSRS: WGS84; Identification: identifiedBy: A. Polevoi; Event: samplingProtocol: Trunk emergence trap; eventDate: 2016-05-26/06-2; Record Level: institutionCode: FRIP  Diagnosis Medium sized dark species, distinguished from other Gnophomyiaby the structure of male and female genitalia (Fig. 1; see also Hancock (2008), fig. 6, 10).  Distribution Palaearctic. Only recently discovered in Finland and Russian Karelia ( Polevoi and Salmela 2014,  Staryand Salmela 2004).  Ecology Saproxylic species, associated with different deciduous trees ( Krivosheina 2008). In Finland and Karelia, so far collected exclusively on aspen ( Hancock 2008, Halme et al. 2012). According to the authors' data, this species prefers huge wind-broken aspens with a diameter over 70 cm, fallen 7 years ago (Table 1). It favoured the trunks colonised by Lentaria afflata(RS=0.56, P<0.05) and Subulicystidium longisporum(RS=0.62, P<0.05), but seemed to avoid those decayed by Phellinus tremulae(RS=-0.56, P<0.05).  Conservation Red-listed in Finland, category VU ( Penttinen et al. 2010). 2016-05-26 Trunk emergence trap FRIP A. Polevoi Russia Kivach Nature Reserve 0 22175 9 2 7 Other material