Idioteuthis tyroi
Encyclopedia
Idioteuthis tyroi is a species of whip-lash squid
. It is known from a single paralarva of 15 mm mantle
length (ML). The paralarva is unique in having expanded tentacular clubs, although few mastigoteuthids have described paralarvae.
Whip-lash squid
The Mastigoteuthidae, also known as whip-lash squid, are a family of small deep-sea squid. Approximately 20 known species in two genera are represented, with members found in both the mesopelagic and bathypelagic zone of most oceans...
. It is known from a single paralarva of 15 mm mantle
Mantle (mollusc)
The mantle is a significant part of the anatomy of molluscs: it is the dorsal body wall which covers the visceral mass and usually protrudes in the form of flaps well beyond the visceral mass itself.In many, but by no means all, species of molluscs, the epidermis of the mantle secretes...
length (ML). The paralarva is unique in having expanded tentacular clubs, although few mastigoteuthids have described paralarvae.
| Mantle length | 15 mm |
| Mantle width | 3.5 mm |
| Head length | 3.5 mm |
| Head width | 2.5 mm |
| Fin length | 8 mm |
| Fin width | 12 mm |
| Arm I length | 1.2 mm |
| Arm II length | 1.8 mm |
| Arm III length | 1.2 mm |
| Arm IV length | 2.5 mm |
| Tentacle length | 6 mm |
| Club length | 3.5 mm |
| Eye diameter | 1.3 mm |
| Lens diameter | 0.8 mm |