BioImages: The Virtual Field-Guide (UK)

Revels, R., 1994

The Rise and Fall of the Holly Blue Butterfly

Discusses the life history, fluctuations in numbers and parasitoids.

Journal	British Wildlife
Volume	Vol 5., No. 4
Page range	236-239
Illustrations	Colour and half-tone photographs.

Malcolm Storey

Celastrina argiolus ssp. britanna Verity, 1919 (Holly Blue)	Identification		Current
Listrodromus nycthemerus (Gravenhorst, 1820) (an ichneumon wasp)	Background Reading		Current	Photograph.