Patiny, S., D. Baldock, and D. Michez. “Systematics of the Bee Subgenus Systropha (Austrosystropha) (Hymenoptera: Halictidae): Description of a New Species and Proposal of a New Sex Association”. Zootaxa, vol. 3647, no. 4, May 2013, pp. 577–584, doi:10.11646/zootaxa.3647.4.7.