Stygotantulus

{{short description|Species of crustacean}}

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| taxon = Stygotantulus stocki

| authority = Boxshall & Huys, 1989 {{cite journal |doi=10.2307/1548454 |title=New tantulocarid, Stygotantulus stocki, parasitic on harpacticoid copepods, with an analysis of the phylogenetic relationships within the Maxillopoda |author=Geoffrey A. Boxshall |author2=Rony Huys |name-list-style=amp |journal=Journal of Crustacean Biology |volume=9 |issue=1 |year=1989 |pages=126–140 |jstor=1548454}}

| parent_authority = Boxshall & Huys, 1989 

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Stygotantulus is a genus of crustacean with the sole species Stygotantulus stocki. It lives as an ectoparasite on harpacticoid copepods of the families Tisbidae and Canuellidae.{{cite journal |journal=Zootaxa |volume=2035 |pages=41–68 |year=2009 |title=The tantulocarid genus Arcticotantalus removed from Basipodellidae into Deoterthridae (Crustacea: Maxillopoda) after the description of a new species from Greenland, with first live photographs and an overview of the class |author=Steen Wilhelm Knudsen |author2=Maja Kierkegaard |author3=Jørgen Olesen |name-list-style=amp |url=http://www.mapress.com/zootaxa/2009/f/zt02035p068.pdf|doi=10.11646/zootaxa.2035.1.2 |doi-access=free }} It may be the smallest arthropod in the world, at a length of less than {{convert|0.1|mm|in|sigfig=1}}.{{cite journal |title=Biodiversity and body size are linked across metazoans |author=Craig R. McClain |author2=Alison G. Boyer |name-list-style=amp |doi=10.1098/rspb.2009.0245 |journal=Proceedings of the Royal Society B: Biological Sciences |year=2009 |volume= 276|issue=1665 |pages=2209–2215 |url= |pmid=19324730 |pmc=2677615}} The specific name stocki commemorates Jan Hendrik Stock, a Dutch carcinologist.{{cite web |url=http://www.tmbl.gu.se/libdb/taxon/personetymol/petymol.s.html |title=Biographical Etymology of Marine Organism Names |author=Hans G. Hanssen |publisher=Göteborgs Universitet |year=2005 |access-date=2009-12-20 |archive-url=https://web.archive.org/web/20060129194502/http://www.tmbl.gu.se/libdb/taxon/personetymol/petymol.s.html |archive-date=2006-01-29 |url-status=dead }}