Literature
- Langton, P.H. 1991a. A key to pupal exuviae of West Palaearctic Chironomidae. Privately published by P.H. Langton: 3 St Felix Road, Ramsay Forty Foot, Cambridgeshire, England PE17 1YH: 386 pp.
- Wülker, W. 1991a. Chironomus fraternus sp. n. and C. beljaninae sp. n., sympatric sister species of the aberratus group in Fennoscandian reservoirs. Entomologica Fennica 2: 97-109.