Zanca, F., Schmidt-Rhaesa, A., de Villalobos, C. and Achiorno, C. 2006. Revision of the genus Chordodes (Gordiida, Nematomorpha) from Africa. II. Ultrastructural redescription of C. africanus Sciacchitano, 1933, C. hawkeri Camerano 1902; C. sandoensis, Sciacchitano 1937; C. schoutedeni, Sciacchitano 1933 and reinterpretation of Chordodes butensis Sciacchitano, 1937. Zootaxa. 1191, 1 (May 2006), 49–59. DOI:https://doi.org/10.11646/zootaxa.1191.1.4.