Literature
- Coffman, W.P., Cranston, P.S., Oliver, D.R. and Saether, O.A. 1986a. The pupae of Orthocladiinae (Diptera: Chironomidae) of the Holarctic region - Keys and diagnoses. In: Wiederholm, T. [ed.]: Chironomidae of the Holarctic region. Part 2. Pupae. Entomologica scandinavica Supplement 28: 147-296.
- Saether, O.A. and Halvorsen, G.A. 1981a. Diagnoses of Tvetenia Kieff. emend., Dratnalia n.gen., and Eukiefferiella Thien. emend., with a phylogeny of the Cardiocladius group (Diptera: Chironomidae). Entomologica scandinavica Supplement 15: 269-285.