Adult specimens of Sciophila fractinervis. A Gravid female Sciophila fractinervis (atypical form lacking R2+3 vein, further reinforcing the instability of this character); B A typical male Sciophila fractinervis (R2+3 vein present creating a radial cell).

  
  Part of: Deady RJ, Delaney MA, Jones E, Chandler PJ (2022) Further interceptions of the Neotropical fungus gnat Sciophila fractinervis Edwards, 1940 (Diptera, Mycetophilidae) in Britain with comments and observations on its biology and spread. Biodiversity Data Journal 10: e94812. https://doi.org/10.3897/BDJ.10.e94812