Stygotantulus stocki is a species of crustacean, living as an ectoparasite on harpacticoid copepods of the families Tisbidae and Canuellidae.[2] It is one of the smallest arthropods in the world, at a length of less than 0.1 millimetres (0.004 in).[3] The specific name stocki commemorates Jan Hendrik Stock, a Dutch carcinologist.[4]

Another contender for the world's smallest arthropod is Tantulacus dieteri, with a total body length of only 85 micrometres (0.0033 in).[5]

Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Crustacea
Class: Maxillopoda
Subclass: Tantulocarida
Family: Basipodellidae
Genus: Stygotantulus
Boxshall & Huys, 1989
Species: S. stocki
Binomial name
Stygotantulus stocki
Boxshall & Huys, 1989 [1]


  1. ^ Geoffrey A. Boxshall & Rony Huys (1989). "New tantulocarid, Stygotantulus stocki, parasitic on harpacticoid copepods, with an analysis of the phylogenetic relationships within the Maxillopoda". Journal of Crustacean Biology. 9 (1): 126–140. doi:10.2307/1548454. JSTOR 1548454.
  2. ^ Steen Wilhelm Knudsen, Maja Kierkegaard & Jørgen Olesen (2009). "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" (PDF). Zootaxa. 2035: 41–68.
  3. ^ Craig R. McClain & Alison G. Boyer (2009). "Biodiversity and body size are linked across metazoans". Proceedings of the Royal Society B: Biological Sciences. 276 (1665): 2209–2215. doi:10.1098/rspb.2009.0245. PMC 2677615Freely accessible. PMID 19324730.
  4. ^ Hans G. Hanssen (2005). "Biographical Etymology of Marine Organism Names". Göteborgs Universitet.
  5. ^ Inga Mohrbeck, Pedro Martínez Arbizu & Thomas Glatzel (October 2010). "Tantulocarida (Crustacea) of the Southern Ocean deep sea, and the description of three new species of Tantulacus Huys, Andersen & Kristensen, 1992". Systematic Parasitology. 77 (2): 131–151. doi:10.1007/s11230-010-9260-0.

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