Orthotrichia angustella (McLachlan, 1865)
Distribution: Norway, Sweden
Figures: 1-5, ♂-genitalia: 1 - left side, lateral; 2 - right side, lateral; 3 - dorsal; 4 - phallus, dorsal; 5 - ♂-genital, ventral; 6-8, ♀-genitalia: 6 - lateral; 7- dorsal; 8 - ventral. (fig. 1-8 from Nógrádi & Uherkovic 2002)
Comments: Norsk Rødliste (2006):critically endangered; Red List of Swedish Species (2005): data deficient (Kalmar läns fastlandsdel, Örebro län)
Tobias & Tobias (2008): Trichoptera fennoscandinavica. - HTML Document