Hydrosmittia Ferrington Jr & Saether 2011, gen. n.

Key to known female imagines of Hydrosmittia gen. n. 1. Costa proximal to apex of R 4+5 with 0–5 non-marginal setae.................................................... 2 – Costa proximal to R 4+5 with 17–42 non-marginal setae............................................................ 4 2. Inner vertical setae absent, LR 1 0.38–0.39................................ H. ruttneri Strenzke et Thienemann (p. 129) – Inner vertical setae present, LR 1 0.44–0.48...................................................................... 3 3. Inner vertical setae conspicuous, the longest 32–48 µm long; seminal capsules with fine microtrichia............................................................................................... H. oxoniana (Edwards) (p. 120) – Inner vertical setae inconspicuous, less than 15 µm long; seminal capsules with or without distinct microtrichia........... 4 4. Seminal capsules with dark microtrichia; costa proximal to apex of R 4+5 with 17–23 non-marginal setae; Holarctic......................................................................................... H. virgo Strenzke (p. 126) – Seminal capsules apparently without microtrichia; costa proximal to apex of R 4+5 with 21–42 setae; Holarctic.......................................................................................... H. montana Strenzke (p. 118)