Chtenopteryx sicula

Chtenopteryx sicula, also known as the comb-finned squid or toothed-fin squid, is a species of squid native to at least the Mediterranean Sea. It is characterised by several distinct morphological features: ocular photophores are present but visceral photophores are absent, arm suckers are arranged in at least 4 series distally, and club suckers are borne in more than 8 series.

Comb-finned squid
Chtenopteryx sicula caught off Naples.
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Family: Chtenopterygidae
Genus: Chtenopteryx
Species:
C. sicula
Binomial name
Chtenopteryx sicula
(Vérany, 1851)[2]
Synonyms[2]
  • Calliteuthis nevroptera Jatta, 1896
  • Chtenopteryx fimbriatus Appellöf, 1890
  • Chtenopteryx siculus (Vérany, 1851)
  • Ctenopteryx cyprinoides Joubin, 1894
  • Ctenopteryx sicula (Vérany, 1851)
  • Sepioteuthis sicula Vérany, 1851

The type specimen was collected off Messina, Italy; the specific name sicula means "of Sicily". It is deposited at the Muséum d'Histoire Naturelle (Musée Barla) in Nice.[3]

Chtenopteryx sicula paralarvae. Left: Two very young paralarvae. The circular tentacular clubs bear approximately 20 irregularly arranged suckers. Two chromatophores are present on each side of the mantle. Centre: Ventral, dorsal and side views of a more advanced paralarva. An equatorial circulet of seven large yellow-brown chromatophores is present on the mantle. Posteriorly the expanded vanes of the gladius are visible in the dorsal view. Right: Ventral and dorsal views of a very advanced paralarva.
  • Ventral view of the viscera, showing the absence of a visceral photophore and the presence of the accessory nidamental gland.

References
  1. Allcock, L.; Barratt, I. (2014). "Chtenopteryx sicula". The IUCN Red List of Threatened Species. 2014: e.T162910A952453. doi:10.2305/IUCN.UK.2014-1.RLTS.T162910A952453.en. Downloaded on 26 February 2018.
  2. Julian Finn (2016). "'Chtenopteryx sicula (Vérany, 1851)". World Register of Marine Species. Flanders Marine Institute. Retrieved 25 February 2018.
  3. Current Classification of Recent Cephalopoda Archived December 10, 2006, at the Wayback Machine

Further reading
  • Naef, A. 1921–23. Cephalopoda. Fauna e Flora de Golfo di Napoli. Monograph, no. 35.


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