↑ 1.01.1de Selys Longchamps, E. (1860) Synopsis des Agrionines. Première légion: Pseudostigma., Bulletin Academie royale Belgique Serie 2 10 (6): 9-27.
↑Drury, D. (1782) Illustrations of natural history. Wherein are exhibited upwards of two hundred figures of exotic insects, according to their different genera; very few of which have hitherto been figured by any author, being engraved and coloured from nature, with the gr, B. White, London 3: 1-76, excl. pl. 1-50.