Dallimore, W.; Jackson, A.B.; Harrison, S.G. A Handbook of Coniferae and Ginkgoaceae
World Conservation Monitoring Centre Protected Areas of the World. Vol. 2: Palaearctic
Higgs, G.E.; Higgs, F. (Ed.) Painted Wings: Memories of George Higgs including his Paintings of Moths and Butterflies
Entomologist's Gazette. Vol. 38, Part 1 (1987)part 3
Tillyard, R.J. The Biology of Dragonflies (Odonata or Paraneuroptera)
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