Literature
- Langton, P.H. 1984a. A key to pupal exuviae of British Chironomidae. Privately published by P.H. Langton, 1 Brooks Road, March, Cambridgeshire: 324 pp.
- 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.
- Langton, P.H. and Cranston, P.S. 1991a. Pupae in nomenclature and identification: West Palaearctic Orthocladius s.str. (Diptera: Chironomidae) revised. Systematic Entomology 16: 239-252.