P. weigeli was genetically confirmed as a distinct species in 2017. Within the genus Pseudechis it is most closely related to the eastern dwarf mulga snake (P. pailsei) and an as yet undescribed species from the Northern Territory.
12Beolens, Bo; Watkins, Michael; Grayson, Michael (2011). The Eponym Dictionary of Reptiles. Baltimore: Johns Hopkins University Press. xiii + 296 pp. ISBN978-1-4214-0135-5. (Pseudechis weigeli, p. 281).
Cogger HG (2014). Reptiles and Amphibians of Australia, Seventh Edition. Clayton, Victoria, Australia: CSIRO Publishing. xxx + 1,033 pp. ISBN978-0643100350.
Wells RW, Wellington CR (1987). "A new species of proteroglyphous snake (Serpentes: Oxyuranidae) from Australia". Australian Herpetologist (503): 1–8. (Cannia weigeli, new species).
Wilson S, Swan G (2013). A Complete Guide to Reptiles of Australia, Fourth Edition. Sydney: New Holland Publishers. 522 pp. ISBN978-1921517280.
Wüster W, Dumbrell AJ, Hay C, Pook CE, Williams DJ, Fry BG (2004). "Snakes across the Strait: trans-Torresian phylogeographic relationships in three genera of Australasian snakes (Serpentes: Elapidae: Acanthophis, Oxyuranus, and Pseudechis)". Molecular Phylogenetics and Evolution34 (1): 1–14. (Pseudechis weigeli, new combination).