The hooked squid, family Onychoteuthidae, currently comprise about 20–25 species (several known from only single life stages and thus unconfirmed), in six or seven genera. They range in mature mantle length from to a suggested length of for the largest member, Onykia robusta. The family is characterised by the presence of hooks only on the tentacular clubs, a simple, straight, funnel–mantle 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 (Leach, 1817) – common clubhook squid

• Onychoteuthis bergii* Lichtenstein, 1818

• Onychoteuthis mollis* Appelloef, 1891

• Onychoteuthis compacta Berry, 1913

• Onychoteuthis borealijaponica Okada, 1927 – boreal clubhook squid

• 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 Lesueur, 1821 – tropical clubhook squid

• Onykia robusta (Verrill, 1876) – robust clubhook squid

• Onykia loennbergii (Ishikawa & Wakiya, 1914) – Japanese hooked squid

• Onykia aequatorialis* Thiele, 1920

• Onykia robsoni (Adam, 1962) – rugose hooked squid

• Onykia indica* Okutani, 1981

incertae sedis

• ?Onykia appelloefi* Pfeffer, 1900

Genus Ancistroteuthis Gray, 1849

• Ancistroteuthis lichtensteinii (Ferussac, 1835) – angel clubhook squid or angel squid

Genus Moroteuthopsis Pfeffer, 1908

• Moroteuthopsis ingens (Smith, 1881) – greater hooked squid

• Moroteuthopsis longimana Filippova, 1972

Genus Notonykia Nesis, Roeleveld & Nikitina, 1998

• Notonykia africanae Nesis, Roeleveld & Nikitina, 1998

• Notonykia nesisi Bolstad, 2007

Genus Filippovia Bolstad, 2010

• Filippovia knipovitchi (Filippova, 1972) – smooth hooked squid

Genus Walvisteuthis Nesis & Nikitina, 1986

• Walvisteuthis jeremiahi Vecchione, Sosnowski & Young, 2015

• Walvisteuthis rancureli (Okutani, 1981)

• Walvisteuthis virilis Nesis & Nikitina, 1986

• Walvisteuthis 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

  Onychoteuthidae discussion forum at TONMO.com

• Laptikhovsky, V.; Arkhipkin, A.; Bolstad, K.S. 2008.