Driloleirus macelfreshi Smith, 1937

Oregon giant earthworm



Taxonomy & Nomenclature

Synonym/s: Megascolides macelfreshi Smith, 1937


Conservation Status

Last record: 29 April 1981?; 1985 (Suckling et al. 2004).

Rediscovered in 2008 (Gervais, 2008).

IUCN RedList status: Vulnerable



Oregon, USA


Biology & Ecology










Original description:

Smith, F. (1937). New North American species of earthworms of the family Megascolecidae. United States National Museum, Proceedings 84: 157-181 [166-168].


Other references:

Gervais, Jennifer. (2008). Details of “Rediscovery” of Oregon Giant Earthworm in 2008. Unpuplished report.

Suckling, Kieran, Slack, Rhiwena and Nowicki, Brian. (2004). Extinct and the Endangered Species Act. Centre For Biological Diversity. 63 pp.

World Conservation Monitoring Centre. (1996). Driloleirus macelfreshi. In: IUCN 2012. IUCN Red List of Threatened Species. Version 2012.2. ( Downloaded on 18 February 2013.


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