original description
(of Dalyellia diadema Hofsten, 1907) Hofsten, N. v. (1907). Studien über Turbellarien aus dem Berner Oberland. <em>Zeitschrift für wissenschaftliche Zoologie.</em> 85: 391-654. With 5 plates (22–26).
page(s): 533 [details]
new combination reference
Ruebush, T. K.; Hayes, W. J. Jr. (1939). The genus Dalyellia in America II. <em>Zoologischer Anzeiger.</em> 128: 136-152.
page(s): 151 [details] Available for editors
From editor or global species database