Literature references

1 literature reference for Ophiogomphus serpentinus Charpentier, 1825:

Author: de Charpentier, T.
Year: 1825
Title: Horae entomologicae, adjectis tabulis novem coloratis. [Date important for Aeschna (= Somatochlora) metallica, also described in Vander Linden 1825]
Source: A. Gosohorsky, Wratislavia: 1-257, incl. pl. 1-9.