Promachoteuthis sulcus

Promachoteuthis sulcus
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Cephalopoda
Subclass:	Coleoidea
Order:	Teuthida
Family:	Promachoteuthidae
Genus:	Promachoteuthis
Species:	P. sulcus
Binomial name
Promachoteuthis sulcus Young, Vecchione & Roper, 2007

Promachoteuthis sulcus is a species of promachoteuthid squid. It is distinguished from related taxa on the basis of several morphological features: nuchal fusion between the head and mantle, much larger size of arm suckers compared to club suckers, greater width of tentacle base than arm base, a recessed club base, and the presence of an aboral tentacle groove.^[1]

P. sulcus is known from a single specimen caught by the German research vessel R/V Walther Herwig in an open net off Tristan Da Cunha, southern Atlantic Ocean (36°49′S 12°17′W / 36.817°S 12.283°W / -36.817; -12.283 (Promachoteuthis sulcus (only specimen caught))), at a depth of 1750–2000 m.^[1]

References

1. ^ ^{a b} Young, R.E., M. Vecchione & C.F.E. Roper 2007. A new genus and three new species of decapodiform cephalopods (Mollusca: Cephalopoda). Reviews in Fish Biology and Fisheries 17(2–3): 353–365. doi:10.1007/s11160-007-9044-z

External links

• Tree of Life web project: Promachoteuthis sulcus