Boletina dubia (Meigen, 1804)

Jakovlev, Jevgeni, Salmela, Jukka, Polevoi, Alexei, Penttinen, Jouni & Vartija, Noora-Annukka, 2014, Recent noteworthy findings of fungus gnats from Finland and northwestern Russia (Diptera: Ditomyiidae, Keroplatidae, Bolitophilidae and Mycetophilidae), Biodiversity Data Journal 2, pp. 1068-1068 : 1068

Boletina dubia (Meigen, 1804)

Materials

Type status: Other material. Occurrence: catalogNumber: MYCE-JS-2012-0022 ; recordedBy: J. Salmela; individualCount: 1; sex: male; Location: country: Finland; stateProvince: Lapponia kemensis pars orientalis; verbatimLocality: Sodankylä, Heinäaapa; decimalLatitude: 67.596; decimalLongitude: 26.883; geodeticDatum: WGS84; Identification: identifiedBy: J. Salmela; Event: samplingProtocol: Malaise trap; eventDate: 2012-8-10/9-19; habitat: rich srping fen; Record Level: institutionCode: JES

Type status: Other material. Occurrence: catalogNumber: MYCE-JS-2012-0088 ; recordedBy: J. Salmela; individualCount: 1; sex: male; Location: country: Finland; stateProvince: Lapponia kemensis pars orientalis; verbatimLocality: Sodankylä, Heinäaapa; decimalLatitude: 67.596; decimalLongitude: 26.883; geodeticDatum: WGS84; Identification: identifiedBy: J. Salmela; Event: samplingProtocol: Malaise trap; eventDate: 2012-6-6/7-6; habitat: rich srping fen; Record Level: institutionCode: JES

Type status: Other material. Occurrence: catalogNumber: MYCE-JS-2012-0034 ; recordedBy: J. Salmela; individualCount: 1; sex: male; Location: country: Finland; stateProvince: Ostrobotnia borealis pars borealis; verbatimLocality: Tornio, Rakanjänkkä; decimalLatitude: 65.889; decimalLongitude: 24.317; geodeticDatum: WGS84; Identification: identifiedBy: J. Salmela; Event: samplingProtocol: Malaise trap; eventDate: 2012-8-6/9-26; habitat: rich srping fen; Record Level: institutionCode: JES

Type status: Other material. Occurrence: catalogNumber: MYCE-JS-2013-0359 ; recordedBy: J. Salmela; individualCount: 1; sex: male; Location: country: Finland; stateProvince: Regio kuusamoensis; verbatimLocality: Salla, Iso Pyhätunturi; decimalLatitude: 66.776; decimalLongitude: 28.810; geodeticDatum: WGS84; Identification: identifiedBy: J. Salmela; Event: samplingProtocol: Malaise trap; eventDate: 2013-8-8/9-19; habitat: intermediate rich sloping fen; Record Level: institutionCode: JES

Type status: Other material. Occurrence: catalogNumber: MYCE-NV-2013-0062 ; recordedBy: J. Salmela; individualCount: 1; sex: male; Location: country: Finland; stateProvince: Lapponia kemensis pars occidentalis; verbatimLocality: Kittilä, Silmäsvuoma; decimalLatitude: 67.582; decimalLongitude: 25.543; geodeticDatum: WGS84; Identification: identifiedBy: J. Salmela; Event: samplingProtocol: Malaise trap; eventDate: 2007-5-31/6-25; habitat: rich fen; Record Level: institutionCode: JES

Type status: Other material. Occurrence: catalogNumber: MYCE-NV-2013-0085 ; recordedBy: J. Salmela; individualCount: 1; sex: male; Location: country: Finland; stateProvince: Lapponia kemensis pars occidentalis; verbatimLocality: Kittilä, Kielisenpalo; decimalLatitude: 68.020; decimalLongitude: 25.063; geodeticDatum: WGS84; Identification: identifiedBy: N. Vartija; Event: samplingProtocol: Malaise trap; eventDate: 2007-8-1/31; habitat: rich spring fen; Record Level: institutionCode: JES

Type status: Other material. Occurrence: recordedBy: J. Salmela; individualCount: 1; sex: male; Location: country: Finland; stateProvince: Regio aboensis; verbatimLocality: Turku, Pomponrahka; decimalLatitude: 60.509; decimalLongitude: 22.249; geodeticDatum: WGS84; Identification: identifiedBy: N. Vartija; Event: samplingProtocol: Malaise trap; eventDate: 2011-5-3/6-1; habitat: rich fen

Type status: Other material. Occurrence: recordedBy: R. Frey; individualCount: 1; sex: male; Location: country: Finland; stateProvince: Nylandia; verbatimLocality: Espoo; decimalLatitude: 60.19; decimalLongitude: 24.64; geodeticDatum: WGS84; Identification: identifiedBy: J. Jakovlev; Event: eventDate: 1906; Record Level: institutionCode: MZHF

Type status: Other material. Occurrence: recordedBy: J. Salmela; individualCount: 1; sex: male; Location: country: Finland; stateProvince: Lapponia inarensis; verbatimLocality: Utsjoki, Galddasjohka; decimalLatitude: 69.860; decimalLongitude: 27.809; geodeticDatum: WGS84; Identification: identifiedBy: J. Jakovlev; Event: samplingProtocol: Malaise trap; eventDate: 2007-7-19/8-27; habitat: headwater stream; Record Level: institutionCode: JJH

Distribution

European. Widely distributed in Europe ( Chandler 2004). In the Nordic Region recorded from Norway ( Gammelmo and Søli 2006), Sweden ( Kjaerandsen et al. 2007), Iceland ( Kjaerandsen et al. 2007a) and Finland ( Lundström 1912b, as Boletina inermis , holotype male from Nylandia, Helsinki). Wide range in Finland, including the hemiboreal, boreal and subarctic zones.

Ecology

Boletina dubia has been reared from liverworts ( Cheetham 1920). New Finnish records are mainly from rich fens, and there are single records from a Sphagnum dominated sloping fen and from a headwater stream with rich riparian vegetation.

Conservation

Due to the scarcity of records until the 2010 Red List assessment, the species was considered to be rather rare in Finland. However, the species was obviously overlooked due to its mire-dwelling ecology. Boletina dubia is currently red-listed in Finland (NT, Penttinen et al. 2010), but the new data provided here indicate that the species is actually rather common in suitable habitats in the middle and north boreal mires.