Cryptodesmidae with gonopod telopodite devoid of a prefemoral process at base, usually stout, clearly twisted and tripartite, with an anterior and a posterior branch/lobe, normally between these also with a considerable, simple, spiniform, recurved solenomere terminating a strongly
sigmoid seminal groove; neither an accessory seminal chamber nor a hairy pulvillus.
Golovatch, S.I. (2015). Review of the Millipede Genus Ophrydesmus Cook, 1896, with the Description of a New Species from Southern Vietnam (Diplopoda: Polydesmida: Cryptodesmidae). Tropical Natural History. 15(2): 155–165. available online athttps://tci-thaijo.org/index.php/tnh/article/view/103079