Hooked squid

Hooked squid
Onychoteuthis banksii
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Cephalopoda
Subclass:	Coleoidea
Order:	Teuthida
Suborder:	Oegopsina
Family:	Onychoteuthidae Gray, 1849
Genera
Onychoteuthis Onykia Ancistroteuthis Kondakovia Notonykia Filippovia Callimachus

Onychoteuthis compacta

The family Onychoteuthidae (Hooked squid) currently comprises approximately 20–25 species (several known from only single life stages and thus unconfirmed), in 6 or 7 genera. They range in mature mantle length from 7 cm to a suggested length of 2 m for the largest member, the Robust Clubhook Squid (Onykia robusta). The family is characterised by the presence of hooks only on the tentacular clubs, simple straight mantle-funnel-locking apparatus, and a 'step' inside the jaw angle of the lower beak. With the exception of the Arctic Ocean, the family is found worldwide.

Species

• Genus Onychoteuthis Lichtenstein, 1818
  • Onychoteuthis banksii, Common Clubhook Squid (Leach, 1817)
  • Onychoteuthis bergii* Lichtenstein, 1818
  • Onychoteuthis mollis* Appelloef, 1891
  • Onychoteuthis compacta Berry, 1913
  • Onychoteuthis borealijaponica, Boreal Clubhook Squid Okada, 1927
  • Onychoteuthis meridiopacifica Rancurel & Okutani, 1990
  • Onychoteuthis lacrima Bolstad & Seki in Bolstad, 2008
  • Onychoteuthis prolata Bolstad, Vecchione & Young in Bolstad, 2008
  • Onychoteuthis horstkottei Bolstad, 2010
• Genus Onykia Lesueur, 1821 (includes most species previously placed in Moroteuthis)
  • Subgenus Onykia
    • Onykia carriboea, Tropical Clubhook Squid Lesueur, 1821
    • Onykia robusta, Robust Clubhook Squid (Verrill, 1876)
    • Onykia loennbergii, Japanese Hooked Squid Ishikawa & Wakiya, 1914
    • Onykia aequatorialis* Thiele, 1920
    • Onykia robsoni, Rugose Hooked Squid (Adam, 1962)
    • Onykia indica* Okutani, 1981
  • Subgenus Moroteuthopsis
    • Onykia ingens, Greater Hooked Squid (Smith, 1881)
  • incertae sedis
    • ?Onykia appelloefi* Pfeffer, 1900
• Genus Ancistroteuthis Gray, 1849
  • Ancistroteuthis lichtensteinii, Angel Clubhook Squid or Angel Squid (Ferussac, 1835)
• Genus Kondakovia Filippova, 1972
  • Kondakovia longimana Filippova, 1972
  • Kondakovia nigmatullini Laptikhovsky, Arkhipkin & Bolstad, 2008
• Genus Notonykia Nesis, Roeleveld & Nikitina, 1998
  • Notonykia africanae Nesis, Roeleveld & Nikitina, 1998
  • Notonykia nesisi Bolstad, 2007
• Genus Filippovia Bolstad, 2010
  • Filippovia knipovitchi, Smooth Hooked Squid (Filippova, 1972)
• Genus Callimachus Bolstad, 2010
  • Callimachus rancureli (Okutani, 1981)
  • Callimachus youngorum Bolstad, 2010

(*) indicates taxa requiring further taxonomic investigation

References

• Bolstad, K.S.R. 2008. Systematics of the Onychoteuthidae Gray, 1847 (Cephalopoda: Oegopsida). Doctoral thesis.
• Bolstad, K.S.R. 2010. Systematics of the Onychoteuthidae Gray, 1847 (Cephalopoda: Oegopsida). Zootaxa 2696: 1–186. Preview

External links

• Tree of Life: Onychoteuthidae
• CephBase: Onychoteuthidae
• Onychoteuthidae discussion forum at TONMO.com
• Laptikhovsky, V.; Arkhipkin, A.; Bolstad, K.S. 2008. A second species of the squid genus Kondakovia (Cephalopoda: Onychoteuthidae) from the sub-Antarctic.

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