WoRMS name details
Hormiphora japonica Moser, 1907
267961 (urn:lsid:marinespecies.org:taxname:267961)
unaccepted (synonym)
Species
marine, brackish, fresh, terrestrial
Moser, Fanny. (1907). Neues über Ctenophoren. Mitteilung II. <em>Zoologischer Anzeiger 31: 449-454.</em>
page(s): 450 [details]
page(s): 450 [details]
Description Body elongate, cylindrical, somewhat tapered toward the two poles; ribs and meridional vessels of unequal length; ribs...
Description Body elongate, cylindrical, somewhat tapered toward the two poles; ribs and meridional vessels of unequal length; ribs narrow and rather long, beginning near the sensory body, barely exceeding the oral quarter, where the tentacular bases also cease. Meridional vessels, on the other hand, somewhat longer, also ceasing at some distance from mouth. Stomach very long; funnel vessel short, slender tube. Entrance of adradial into meridional vessels at same level as funnel, in aboral third of ribs. Sheath opening higher, not far from funnel, approximately midway between latter and sensory body. Tentacular bases long, slender, forming an arch concave to the stomach, the extreme ends of which alone touch the latter. From their middle, most distant from the stomach, the tentacles arise. Sheath slender and gracefully curved, as long as the tentacular bases. No lateral filaments preserved. The smallest specimens differ from the older ones only in size.
The 28 very beautifully preserved and preserved specimens, ranging from 3-38 mm in length, so strikingly resemble Hormiphora palmata caught by Chun in the Canary Islands, by Chierchia in Cape Verde, and described and illustrated by the former (1898, p. 17, Plate III, Figs. 1 and 2), that it was very difficult to decide whether the Japanese species should be considered even as a local variety of the latter. However, differences from the latter are evident in all specimens, which, though slight, cannot be overlooked and are not due to accidental individual or age differences. On the other hand, they point to a very close relationship of both, the discussion of which I reserve for later, and which lie solely in the tentacular apparatus and in the length of the ribs and meridional vessels.
In Hormiphora palmata Chun the ribs and meridional vessels are of equal length and extend quite near the mouth; in Hormiphora japonica they are of unequal length, the ribs noticeably shorter than the meridional vessels, and both, including the longer meridional vessels, cease at some distance from the mouth (Fig. 6).
Different is also the shape of the tentacular bases; in both they are elongated and slender, but in the European species they describe a slight double curvature (cf. Chun's treatise 1898, Taf. III, Fig. 2), so that the middle part, from which the tentacle departs, lies closest to the stomach. In the Japanese species, on the other hand (Fig. 7), the base forms a single arch concave to the stomach, the ends of which alone touch the stomach, while the middle part, with the origin of the tentacle, projects farthest from it; the oscillation of the sheath is also more slender and graceful.
With Hormiphora japonica the number of known hormiphores has increased to eight, inasmuch as to the six species mentioned in the Siboga are now added Hormiphora amboinae Moser (1908, p. 8) has been added. [details]
The 28 very beautifully preserved and preserved specimens, ranging from 3-38 mm in length, so strikingly resemble Hormiphora palmata caught by Chun in the Canary Islands, by Chierchia in Cape Verde, and described and illustrated by the former (1898, p. 17, Plate III, Figs. 1 and 2), that it was very difficult to decide whether the Japanese species should be considered even as a local variety of the latter. However, differences from the latter are evident in all specimens, which, though slight, cannot be overlooked and are not due to accidental individual or age differences. On the other hand, they point to a very close relationship of both, the discussion of which I reserve for later, and which lie solely in the tentacular apparatus and in the length of the ribs and meridional vessels.
In Hormiphora palmata Chun the ribs and meridional vessels are of equal length and extend quite near the mouth; in Hormiphora japonica they are of unequal length, the ribs noticeably shorter than the meridional vessels, and both, including the longer meridional vessels, cease at some distance from the mouth (Fig. 6).
Different is also the shape of the tentacular bases; in both they are elongated and slender, but in the European species they describe a slight double curvature (cf. Chun's treatise 1898, Taf. III, Fig. 2), so that the middle part, from which the tentacle departs, lies closest to the stomach. In the Japanese species, on the other hand (Fig. 7), the base forms a single arch concave to the stomach, the ends of which alone touch the stomach, while the middle part, with the origin of the tentacle, projects farthest from it; the oscillation of the sheath is also more slender and graceful.
With Hormiphora japonica the number of known hormiphores has increased to eight, inasmuch as to the six species mentioned in the Siboga are now added Hormiphora amboinae Moser (1908, p. 8) has been added. [details]
Mills, C.E. Internet (1998-present). Phylum Ctenophora: list of all valid species names. Electronic internet document. Hormiphora japonica Moser, 1907. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=267961 on 2024-11-12
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original description
Moser, Fanny. (1907). Neues über Ctenophoren. Mitteilung II. <em>Zoologischer Anzeiger 31: 449-454.</em>
page(s): 450 [details]
additional source Mills, C. E. (1998-present). Phylum Ctenophora: list of all valid species names. [Internet]., available online at http://faculty.washington.edu/cemills/Ctenolist.html [details]
source of synonymy van der Land, J. (ed). (2008). UNESCO-IOC Register of Marine Organisms (URMO). , available online at http://www.marinespecies.org/urmo/ [details]
page(s): 450 [details]
additional source Mills, C. E. (1998-present). Phylum Ctenophora: list of all valid species names. [Internet]., available online at http://faculty.washington.edu/cemills/Ctenolist.html [details]
source of synonymy van der Land, J. (ed). (2008). UNESCO-IOC Register of Marine Organisms (URMO). , available online at http://www.marinespecies.org/urmo/ [details]
From regional or thematic species database
Description Body elongate, cylindrical, somewhat tapered toward the two poles; ribs and meridional vessels of unequal length; ribs narrow and rather long, beginning near the sensory body, barely exceeding the oral quarter, where the tentacular bases also cease. Meridional vessels, on the other hand, somewhat longer, also ceasing at some distance from mouth. Stomach very long; funnel vessel short, slender tube. Entrance of adradial into meridional vessels at same level as funnel, in aboral third of ribs. Sheath opening higher, not far from funnel, approximately midway between latter and sensory body. Tentacular bases long, slender, forming an arch concave to the stomach, the extreme ends of which alone touch the latter. From their middle, most distant from the stomach, the tentacles arise. Sheath slender and gracefully curved, as long as the tentacular bases. No lateral filaments preserved. The smallest specimens differ from the older ones only in size.The 28 very beautifully preserved and preserved specimens, ranging from 3-38 mm in length, so strikingly resemble Hormiphora palmata caught by Chun in the Canary Islands, by Chierchia in Cape Verde, and described and illustrated by the former (1898, p. 17, Plate III, Figs. 1 and 2), that it was very difficult to decide whether the Japanese species should be considered even as a local variety of the latter. However, differences from the latter are evident in all specimens, which, though slight, cannot be overlooked and are not due to accidental individual or age differences. On the other hand, they point to a very close relationship of both, the discussion of which I reserve for later, and which lie solely in the tentacular apparatus and in the length of the ribs and meridional vessels.
In Hormiphora palmata Chun the ribs and meridional vessels are of equal length and extend quite near the mouth; in Hormiphora japonica they are of unequal length, the ribs noticeably shorter than the meridional vessels, and both, including the longer meridional vessels, cease at some distance from the mouth (Fig. 6).
Different is also the shape of the tentacular bases; in both they are elongated and slender, but in the European species they describe a slight double curvature (cf. Chun's treatise 1898, Taf. III, Fig. 2), so that the middle part, from which the tentacle departs, lies closest to the stomach. In the Japanese species, on the other hand (Fig. 7), the base forms a single arch concave to the stomach, the ends of which alone touch the stomach, while the middle part, with the origin of the tentacle, projects farthest from it; the oscillation of the sheath is also more slender and graceful.
With Hormiphora japonica the number of known hormiphores has increased to eight, inasmuch as to the six species mentioned in the Siboga are now added Hormiphora amboinae Moser (1908, p. 8) has been added. [details]
