- Arms, suckers and cirri
- Dorsal arms 75% of TL; ventral arms 38% of TL.
- Cirri short, ca. 50% of greatest sucker diameter.
- Tiny cirri present at first arm sucker, enlarged cirri first appear between suckers 4 and 6.
- First 3 suckers of moderate size, thereafter increase gradually to typical size, similar sized suckers present to midpoint of arms, thereafter suckers decrease to arm tips.
- Sucker aperature with 10 well-developed, hardened, radiating processes.
- Suckers small, diameter ca. 5% of ML.
- Up to 58 suckers on all arms.
- Digestive system
- Salivary glands absent.
- Digestive gland bilobate.
- Intestine appreciably shorter than oesophagus.
Click on an image to view larger version & data in a new window
Figure. Digestive system of L. dentata. Drawing from O'Shea, 1999.
- Optic lobe
- Optic lobe spherical.
- Single nerve bundle arises from optic lobe.
Click on an image to view larger version & data in a new window
Figure. Optic lobe, nerve bundle and white body of L. dentata, holotype, 98 mm ML. Drawing from O'Shea, 1999.
- Male reproductive system
- Accessory glands 2 and 3 dominate accessory gland complex.
- Accessory gland 1 and seminal vesicle 3 with similar granular consistency.
- Accessory gland complex arranged in a linear series.
Click on an image to view larger version & data in a new window
Figure. Male reproductive tract of L. dentata, holotype. Drawing from O'Shea, 1999.
- Radula
- Radula with 7 series of homodont teeth
Click on an image to view larger version & data in a new window
Figure. Radula of L. dentata with false coloring, holotype. Drawing from O'Shea, 1999.
- Beaks
- Upper beak with weakly developed lateral-wall fold.
Click on an image to view larger version & data in a new window
Figure. Beaks of L. dentata, holotype. Left - upper beak. Right - Lower beak. Drawing from O'Shea, 1999.
- Mantle cavity
- Gills half-orange shape, 7 large primary lamellae.
- Mantle adductor muscle normal.
Click on an image to view larger version & data in a new window
Figure. Mantle cavity of L. dentata, holotype. Photograph from O'Shea, 1999.
- Pigmentation
- Dorsal and ventral surfaces of mantle, head and arms pale pinkish-red with faint traces of darker red.
- Oral surfaces of arms and web slightly darker, purplish-red.
- Margins of eye wine-red (see photograph on right).
- Outer margins of fins wine-red.
- Cirri wine-red.
- Suckers and sucker aperatures pale yellow.
Click on an image to view larger version & data in a new window
Figure. Ventral-oblique view of head and mantle of L. dentata showing pigmented ring around opening to eye. Enlargement from title photograph, from O'Shea and Lu, 2002.
- Measurements
NMNZ: M.131564
General Right Left Total length 524 -- -- Mantle length 98 -- -- Mantle width 76 -- -- Pallial apperature width 18 -- -- Funnel length 28 -- -- Fin length 85 -- -- Fin width 43 -- -- Eye opening diam. 13 -- -- Arm I, length -- 392 360+ Arm II, length -- 334 385 Arm III, length -- 300 340 Arm IV -- 201 362 Web depth, sect. A 60 -- -- Web depth, sect. B -- -- 60 Web depth, sect. C -- -- 60 Web depth, sect. D -- 40 69 Web depth, sect. E 34 -- -- Arm I, sucker count -- 58+ 48+ Arm II, sucker count -- 54+ 53+ Arm III, sucker count -- 42+ 27+ Arm IV, sucker count -- 45+ 46+ Arm I, max. cirrus length -- 2.0 -- Arm II, max. cirrus length -- 2.1 -- Arm III, max. cirrus length -- 2.0 -- Arm IV, max. cirrus length -- 1.9 -- Arm I, max. suck. diam. -- 5.0 4.1 Arm II, max. suck. diam. -- 4.0 4.1 Arm III, max. suck. diam. -- 4.0 4.1 Arm IV, max. suck. diam. -- 4.0 4.0 Gill lamella no. 7 -- -- These measurements and counts are from O'Shea, 1999.
Comments
This description is from O'Shea (1999) and O'Shea and Lu (2002).
