^ abcRoháček, Jindřich; Marshall, Stephen A. (1986). The genus Trachyopella Duda (Diptera, Sphaeroceridae) of the Holarctic Region. Monografie III (1985). Torino: Museo Regionale di Scienze Naturali. pp. 1–109.
^Rohček, Jindřich; Marshall, Stephen A.; Norrbom, Allen L.; Buck, Matthias; Quiros, Dora Isabel; Smith, Ian (2001). Rohček, Jindřich (ed.). World Catalog of Sphaeroceridae (Diptera). Opava: Slezské Zemské Muzeum. pp. 1–414. ISBN978-8086224213. Retrieved 3 September 2017.
^Richards, O. W. (1946). "On some Sphaeroceridae (Diptera) from the Island of Guam". Proceedings of the Royal Entomological Society of London B. 15: 129–13.