For over one hundred years the genus Ceraegidion, ever since its determination by Boisduval in 1835, has been represented by only one species, its monotype, C. horrens, one of the most remarkable of. described Australian Cerambycidae, The discovery of a second species is, therefore, of considerable interest and importance.
Ceraegidion horrens was described by Boisduval in the "Voyage ... de L'Astrolabe ... pendant les Annees 1826–1827–1828–1829" in 1835 (p. 492) from a specimen "decouvert dans le nord de la Nouvelle-Hollande, par M. Cunningham". This description was republished in full, accompanied by a plate, in Magasin de Zoologie, v, CI, pl. 124, in the same year. The plate illustrates a male, the dorsal view in colour and a lateral one in line.
In 1864, Thomson, in his "Systema Cerambycidarum" (p. 40), gave the locality of the species as "NIle. Zélande (teste Bowring)", which was quite erroneous. Etc.