Apterourus

Loomis, H. F. (1966). Two new families and other North American Diplopoda of the suborder Chordeumidea. Proceedings of the Biological Society of Washington, 79: 221-230. Washington

Shear, W. A. (1977). The systematic position of the milliped family Apterouridae (Diplopoda, Chordeumida, Striarioidea) and a redescription of Apterourus horizontalis Loomis. <em>Proceedings of The Biological Society of Washington.</em> 89: 689-694.

Shear, W. A. (2003). A second species of the rare milliped family Apterouridae (Diplopoda: Chordeumatida: Striarioidea). Proceedings of the Biological Society of Washington, 116(2): 509-514

Shear, W. A.; Richart, C. H.; Marek, P. E. (2025). A third species of the rare millipede genus Apterourus Loomis, 1966 (Diplopoda: Chordeumatida: Striarioidea: Apterouridae). <em>Insecta Mundi.</em> 1159: 1-7.