Castellanos and Cazzaniga (1979); Castellanos and Menni (1968, 1969); Roper et al. (1984).
(畑中 寛)
Material examined:
FSFL EM 000, EM 001, EM 002, EM 003, EM 131, EM 528, EM 529, EM 530 (8 specimens, 159-327 mm ML)
Description:
Mantle cylindrical, rather slender, slenderer in large males (lower photograph).
Fins triangular; length 50-53%, width 47-50% (37-44% in males larger than
214 mm ML) of dorsal mantle length (ML) : fin angle 30°-43°. Head slender,
width 11-17% of ML. Funnel-mantle rocking apparatus a simple, straight
groove. Eyes covered with trandparent skin (corneal membrane). Arms V≧W≧U>T
in length; suckers in 2 rows; sucker rings with 5-9 square teeth on distal
half and basal half smooth; left ? arm of mature male hectocotylised by
modifications of the distal third to fourth of arm, bases of the suckers
enlarged to nipplelike papillae in 2 rows, suckers in dorsal row minute
or lost. Tentacles shorter than ML; club short, 17-21% of ML, suckers in
4 rows and enlarged in medial 2 rows; the largest sucker ring with 32-38
blunt small teeth. Color rather darker, purplish brown. Attains 33 cm ML.
Distribution:
Known from Peru, Chile and Argentine. Common on the continental shelf from Tierra del Fuego to the Golfo San Jorge in the Argentine waters.
Remarks:
This species differs from L. sanpaulensis in having relatively shorter and narrower fins, shorter tentacles and clubs, and more teeth on tentacular sucker rings.