Hoffman, R.L. (2011). A review of the milliped genus Haplogonopus with commentary on the so-called “Charactopygus-Bildung” modification of spirostreptid paraprocts (Diplopoda: Spirostreptidae). Zootaxa. 2734: 53–62. page(s): 57-60, figs. 8-9 [details]
original descriptionHoffman, R.L. (2011). A review of the milliped genus Haplogonopus with commentary on the so-called “Charactopygus-Bildung” modification of spirostreptid paraprocts (Diplopoda: Spirostreptidae). Zootaxa. 2734: 53–62. page(s): 57-60, figs. 8-9 [details]
additional sourceEnghoff, H.; Hoffman, R. L.; Howell, K. M. (2016). Checklist of the Millipedes (Diplopoda) of Tanzania. Journal of East African Natural History. 105 (1): 51–113., available online athttps://doi.org/10.2982/028.105.0103 page(s): 77 [details]