Abraliopsis hoylei
Richard E. Young and Kotaro TsuchiyaIntroduction
A. hoylei is the type species of the genus. This species was first described from, apparently, the Mascarene Islands (Pfeffer, 1912), western Indian Ocean. It is known from a single female specimen. Other records cannot be relied on as the number of new and unknown species makes earlier identifications questionable.
Characteristics
- Tentacle clubs
- Large ventral hooks of manus about 3 times height of counterparts of dorsal series (judging from drawing).Text states "Due to its strong dehydration, the distal part of the club cannot be well described." (Pfeffer, 1912)
- Carpal flap absent (?); aboral keel present (judging from drawing).
- Large ventral hooks of manus about 3 times height of counterparts of dorsal series (judging from drawing).Text states "Due to its strong dehydration, the distal part of the club cannot be well described." (Pfeffer, 1912)
- Arms
- Arms IV modelate in lenght; ALI IV = ca.75.
- Arms each with 19 - 21 hooks; arm III with 27 suckers total in two series; largest suckers with "pointed denticles on the upper edge."
- Hectocotylus
- Hectocotylus not known.
- Hectocotylus not known.
- Integumental Photophores
Pfeffer (1912) describes the photophores in detail based mostly on the arrangement of "large" photophores. We interpret his description as indicating the presence of the following ventral head photophores:
- Median head series.
- Mediolateral head series.
- Lateral head series.
- Also mentioned: First lateral series, second lateral series (head); median mantle sector in posterior 2/3 of mantle, angle mantle series.
-
Measurements and counts
Sex
Female
Mantle length
29.5
Fin Length
23 Fin width
28 No. arm hooks
19-21
Comments
Taxonomic status of this species is unclear. IF our interpretation of the photophore arrangements are correct, A. hoylei may not belong in the subgenus Abraliopsis, neither does the pattern fit any other known species of the genus. This suggests that our interpretation is incorrect. Unfortunately the type specimen is no longer extant. Specimens are needed from the presumed type locality.
Distribution
Geographical Distribution
Type locality: "ostensibly from the Mascarenes", western Indian Ocean.References
Pfeffer, G. 1912. Die Cephalopoden der Plankton-Expedition. Zugleich eine monographische ubersicht der Oegopsiden Cephalopoden. Ergebnisse der Plankton-Expedition der Humboldt-stiftung, 2:1-815
Title Illustrations
![Click on an image to view larger version & data in a new window](http://tolweb.org/tolarchive/19688/20131103/tree/img/magnify.gif)
Scientific Name | Abraliopsis hoylei |
---|---|
Location | "Allegedly from the Mascarenes" Indian Ocean |
Reference | Pfeffer, G. 1912. Die Cephalopoden der Plankton-Expedition. Zugleich eine monographische ubersicht der Oegopsiden Cephalopoden. Ergebnisse der Plankton-Expedition der Humboldt-stiftung, 2:1-815 |
Sex | Female |
Life Cycle Stage | Mature |
View | Ventral |
Size | 29.5 mm ML |
About This Page
University of Hawaii, Honolulu, HI, USA
Tokyo University of Fisheries, Tokyo, Japan
Correspondence regarding this page should be directed to Richard E. Young at
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Abraliopsis hoylei
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. Richard E. Young and Kotaro Tsuchiya.
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- Content changed 03 November 2013
Citing this page:
Young, Richard E. and Kotaro Tsuchiya. 2013. Abraliopsis hoylei http://tolweb.org/Abraliopsis_hoylei/19688/2013.11.03 in The Tree of Life Web Project, http://tolweb.org/
. Version 03 November 2013 (under construction).