- ↑ Enderlein, G. (1912) , Die Richardiinen des Stettiner Museum. Sitz. Gesell. naturforsch. Freunde, Berlin 1912: 99-113.
- ↑ Cockerell, T. D. A. (1916) , Some American fossil insects. Proc. U.S. Natl. Mus. 51: 89-106. [1916.10.16]
- ↑ Lindner, E. (1930) , Die Ausbeute der deutschen Chaco-Expedition 1925/26. Diptera. XVIII. Richardiidae. Konowia 9: 60-62. [1930.04.15]
- ↑ Lopes, H. de S. (1936) , Sobre tres especies novas de Richardiidae do Brasil (Dipt.). Revta Ent. 6: 475-480, pl. 5. [1936.10.30]
- ↑ Cresson, E. T., Jr. (1923) , A new species of Achias-like fly from Nicaragua, apparently belonging to the little-known genus Plagiocephalus (Diptera: Ortalidae). Ent. News 34: 257-260. [1923.11.??]
- ↑ 6.0 6.1 Bisby F.A., Roskov Y.R., Orrell T.M., Nicolson D., Paglinawan L.E., Bailly N., Kirk P.M., Bourgoin T., Baillargeon G., Ouvrard D. (ed.) (2011). "Species 2000 & ITIS Catalogue of Life: 2011 Annual Checklist". Species 2000: Reading, UK. Ginkuhà 24 Septyembre 2012.CS1 maint: multiple names: authors list (link) CS1 maint: extra text: authors list (link)
- ↑ Systema Dipterorum. Pape T. & Thompson F.C. (eds), 6 Enero 2011