Ward P. H., 1979: Structural abnormalities in larvae of Panorpa communis L. (Mecoptera, Panorpidae). 2 pp. [M22]
 
MRN 277
Ward P. H., 1979: Structural variation in the genitalia of the Panorpa alpina-complex (Mecoptera). 9 pp. [M22]
 
SYS 04071
Ward P. H., 1979: Structural variation in the genitalia of the Panorpa alpina-complex (Mecoptera). 9 pp. [M22] [MRN 277] Systematic Entomology 4(2): 71-79.