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Grimpoteuthis innominata

Summary

Grimpoteuthis innominata, commonly known as the small jellyhead,[3] is a species of small, pelagic octopus described by Steve O'Shea in 1999 from two specimens,[4] however several further specimens have since been identified.[5] The genus Enigmateuthis was described to contain this species when described, but Martin Collins placed the species in the genus Grimpoteuthis due to uncertainty regarding the type specimen of Grimpoteuthis.[6]

Grimpoteuthis innominata
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Order: Octopoda
Family: Grimpoteuthidae
Genus: Grimpoteuthis
Species:
G. innominata
Binomial name
Grimpoteuthis innominata
O'Shea, 1999[2]
Synonyms
  • Enigmatiteuthis innominata[2]

Description and habitat edit

Grimpoteuthis innominata has been collected from the Chatham Rise to the east of New Zealand, with a bathymetric range approximately 1600 to 2400 meters depth, close to the seafloor (likely demersal).[4][5]

The octopus is small, "fitting in two outstretched palms,"[3] and its colouring is dark red. This octopus' mantle reaches 43 millimeters long, and a total length up to 156 millimeters long on the type material, it has an internal shell shaped like the letter "U".[6][4] Some additional specimens captured since its description are somewhat larger, with a mantle length up to 77 millimeters.[5] Its lobe-like fins and the shape of its shell help separate it from other species of Grimpoteuthis living in the Pacific Ocean. There are between 50 and 60 suckers on each arm of the octopus, and the suckers of males are larger than those of females.[6]

References edit

  1. ^ Lyons, G; Allcock, Louise (2014). "Grimpoteuthis innominata". IUCN Red List of Threatened Species (e.T162918A953226). doi:10.2305/IUCN.UK.2014-3.RLTS.T162918A953226.en.
  2. ^ a b Bouchet, Philippe. "Grimpoteuthis innominata". World Register of Marine Species. Retrieved 30 May 2018.
  3. ^ a b O'Shea, Steve (March 9, 2019). "Deep-sea finned Octopoda of New Zealand". Octopus News Magazine. Archived from the original on September 28, 2020.
  4. ^ a b c O'Shea, Steve (1999). "The Marine Fauna of New Zealand: Octopoda (Mollusca: Cephalopoda)". NIWA Biodiversity Memoir. 112: 1–280.
  5. ^ a b c Verhoeff, Tristan Joseph; O’Shea, Steve (2022-01-02). "New records and two new species of Grimpoteuthis (Octopoda: Cirrata: Grimpoteuthididae) from southern Australia and New Zealand". Molluscan Research. 42 (1): 4–30. doi:10.1080/13235818.2022.2035889. ISSN 1323-5818. S2CID 247020706.
  6. ^ a b c O'Shea, Steve; Vecchione, Michael; Young, Richard E. "Grimpoteuthis innominata". Tree of Life Web Project. Retrieved 30 May 2018.