Smith, K.G.V., 1996. A further Middlesex locality for Norellia soinipes (Mg.) (Dipt., Scathophagidae). Entomologist's monthly Magazine, 132, p.54.

Smith, K.G.V. & Vardy, C.R., 1988. A further British record of Norellia spinipes (Meigen) (Dipt., Scathophagidae) from daffodils in Middlesex. Entomologist's monthly Magazine, 124, p.242.