Described as
Orthocladius obumbratus Johannsen, 1905a: p. 281
Synonymy
Orthocladius rhyacobius Kieffer, 1911a: p. 181
Orthocladius rhyacophilus Kieffer, 1911a: p. 182
Orthocladius dispar Goetghebuer, 1942a: p. 14
Orthocladius excavatus Brundin, 1947a: p. 20
Orthocladius (s. str.) pe9 Langton, 1984a: p. 155
Orthocladius ticinoi Rossaro and Prato, 1991a: p. 66
Codes
ORCLOBUM [Dutch-lettercode]