original description(ofTrachyiulus humberti willeyi Carl, 1941)Carl, J. (1941). Diplopoden aus Südindien und Ceylon. 2. Teil: Nematophora und Juliformia. Revue suisse de zoologie, 48(22): 569-714. Genève page(s): 641 [details]
source of synonymyJeekel, C. A. W. (2004). A bibliographic catalogue of the "Cambaloidea" (Diplopoda, Spirostreptida). Myriapod Memoranda, 7: 43-109 page(s): 49 [details]