Smith, F. (1896). Notes on species of North American Oligochaeta. II. <em>Illinois Natural History Survey Bulletin.</em> 4(14):396-413 + Plates XXXV-XXXVIII., available online athttps://biodiversitylibrary.org/page/8550745 page(s): 407 [details]
Traits (2025). Microscolex hempeli F. Smith, 1896. Accessed at: https://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=1070971 on 2025-05-23
Marine Species Traits editorial board (2025). Marine Species Traits. Microscolex hempeli F. Smith, 1896. Accessed at: https://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=1070971 on 2025-05-23
original descriptionSmith, F. (1896). Notes on species of North American Oligochaeta. II. <em>Illinois Natural History Survey Bulletin.</em> 4(14):396-413 + Plates XXXV-XXXVIII., available online athttps://biodiversitylibrary.org/page/8550745 page(s): 407 [details]
additional sourceEisen, Gustav A. (1900). Researches in American Oligochaeta: with especial reference to those of the Pacific coast and adjacent islands. <em>Proceedings of the Californian Academy of Sciences.</em> 2 (2): 85-276, 10 plates ( v-xiv)., available online athttps://www.biodiversitylibrary.org/page/31548399 page(s): 152 [details]