Boletina borealis, 9th tergite (left, dorsal viewl) and aedeagus and parameres (right, lateral view). Note the curved, long and thin apices of the parameres.  
  Part of: Jakovlev J, Salmela J, Polevoi A, Penttinen J, Vartija N (2014) Recent noteworthy findings of fungus gnats from Finland and northwestern Russia (Diptera: Ditomyiidae, Keroplatidae, Bolitophilidae and Mycetophilidae). Biodiversity Data Journal 2: e1068.