Grimpoteuthis abyssicolaSteve O'Shea and Richard E. Young
- Arms and web
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- Arm formula: 1>2>3>4; longest arm 70% of TL, shortest 50% of TL.
- Web formula: A>B>C>D>E; E about half length of A.
- Web nodule at level of suckers 32-34.
- Suckers small, ASIn - 4% of ML.
- Arm sucker count to 77.
- First 6-8 suckers similar sized, following 30-35 slightly enlarged, terminal 30-35 decrease rapidly in size to arm tip.
- Sucker aperatures simple (i.e., smooth).
- Cirri (largest) 10% of ML, length 2.5 times largest sucker diameter; largest between suckers 10 - 30.
- First cirri between suckers 4 and 6.
Figure. Sucker of G. abyssicola cut in half. Drawing from O'Shea (1999).
- Saddle with convex inner and outer surfaces.
- Lateral wings lobe-like.
The above description is from O'Shea, 1999. More details of the description of G. abyssicola can be found here.
Among Pacific species, G. abyssicola differs from:
- G. bathynectes in having more suckers (77 vs 58; web nodule at sucker 32-34 vs 26), longer cirri (2.5 vs 1.5 x largest sucker diam.), position of first cirri (4-6 vs 3-4), shell shape (lateral arm of shell lobelike vs not expanded), posterior salivary absent vs present.
- G. hippocrepium by, possibly, the sucker number at the web nodule (33 vs 25) and the presence of lobelike wings on the shell.
- G. innominata in the lack of peculiar features of the shell and, possibly, a shorter gill (half-orange vs semi-sepioid).
- G. meangensis by, apparently, the lack of large shoulder blades on the shell and a higher arm sucker count (77 vs 60-70).
- G. pacifica in having more suckers (77 vs 52).
- G. tuftsi by features of the shell (lack of shoulder blades and presence of expanded or lobelike wings).
Type locality: 35° 35.1'S, 160° 57.1'E, 3180-3145 m depth, between New Zealand and Australia. This species is known only from the type locality.
O’Shea, Steve. 1999. The Marine Fauna of New Zealand: Octopoda (Mollusca: Cephalopoda). NIWA Biodiversity Memoir 112: 280pp.
Oceanic Sciences Research Institute, Auckland University of Technology, Auckland, New Zealand
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- First online 13 May 2003
Citing this page:
O'Shea, Steve and Richard E. Young. 2003. Grimpoteuthis abyssicola http://tolweb.org/Grimpoteuthis_abyssicola/20117/2003.05.13 in The Tree of Life Web Project, http://tolweb.org/. Version 13 May 2003 (under construction).