Stygoporus oregonensis is a species of beetle in the family Dytiscidae, the only species in the genus Stygoporus. Dytiscidae Species List at Joel Hallan's Biology Catalog. Texas A&M University. Retrieved 7 May 2012.
They were first identified in an Oregon bathroom in 1984. Eight specimens were collected by Oregon State University before the bathroom was bleached. There have been no reported specimens found until 2014 to 2016.
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