A reassessment of Halopteris polymorpha (Billard, 1913) (Cnidaria: Hydrozoa), with descriptions of three new species
Author
Galea, Horia R.
Hydrozoan Research Laboratory, 405 Chemin des Gatiers, F- 83170 Tourves, France
horia.galea@gmail.com
Author
Gioia Di Camillo, Cristina
Dipartimento di Scienze della Vita e dell'Ambiente, Università Politecnica delle Marche, I- 60121 Ancona, Italy
Author
Maggioni, Davide
Marine Research and High Education (MaRHE) Center, Università degli Studi di Milano-Bicocca, 12030 Magoodhoo Island, Faafu Atoll, Maldives
Author
Montano, Simone
Marine Research and High Education (MaRHE) Center, Università degli Studi di Milano-Bicocca, 12030 Magoodhoo Island, Faafu Atoll, Maldives
Author
Schuchert, Peter
Muséum d’histoire naturelle, C. P. 6434, CH- 1211 Genève 6, Switzerland
text
Revue suisse de Zoologie
2018
2018-03-31
125
1
21
59
journal article
3943
10.5281/zenodo.1196007
9f6a1d45-f725-42d1-a64c-b6ffaaae23d7
0035-418
1196007
Table 1. Comparative morphological and morphometrical features of H. polymorpha (Billard, 1913) (present study and syntype materials from Siboga Stn. 80 and 299) and H. sibogae (Billard, 1913) (Ho stands for homomerous, and He for heteromerous). | Halopteris polymorpha (Billard, 1913) | | Halopteris sp. | | Halopteris sibogae (Billard, 1913) |
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| Present study, MHNG- | | Billard (1913), Siboga | Schuchert (1997), | | Present study, | | Present study, MHNG- | | Billard (1913), |
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| INVE-97937 | | Stn. 80 | Siboga Stn. 80 | | MNHN H.L. 1309, | | INVE-97926 | | as H. polymorpha |
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| | | | | | Siboga Stn. 299 | | | | var. sibogae |
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| Caulus (seen frontally) |
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| - segmentation | Ho | | - | Ho | | Ho (distally He) | | Ho | | - |
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| - superior nematothecae / internode with opposite cladia | 4-5 | | - | - | | - | | 3-4 | | - |
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| - nematothecae above hydrotheca in ordinary Commonly 2-3 (range 1-5) internodes | | - | 2 (rarely 1 or 3) | | 2 | | 2-3 | | - |
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| - number of axillar nematothecae | 1 | | 1 | 1 | | 2 | | 1-2 | | - |
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| - internode length | 695-955 | | - | - | | 515-570 | | 450-605 | | - |
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| - diameter at node | 145-230 | | - | - | | 115-130 | | 90-125 | | - |
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| - length of apophysis | 70-80 | | - | - | | - | | 70-80 | | - |
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| - length of nematothecae | 80-100 | | - | - | | 65-70 | | 100-125 | | - |
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| - diameter of nematothecae at rim | 55-65 | | - | - | | 35-45 | | 45-50 | | - |
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| Cladia (seen laterally) |
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| - segmentation | He | | He | He | | He | | He | | He |
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| - nematothecae on 1st ahydrothecate internode 2 | | 2 | 2 | | 2 (occ. 3) | | 2 | | |
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| - nematothecae on ordinary ahydrothecate internodes | 1-2 | | Commonly 2 | 2 | | 1-2 | | 1-2 | | 1 |
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| - number of axillar nematothecae | 0-1 | | 1 | 1 | | 1 | | 1-2 | | - |
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| - length of quadrangular segment | 65-80 | | - | - | | 45-60 | | 40-45 | | - |
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| - length of 1st ahydrothecate internode | 475-730 | | 580-700 | - | | 220-310 | | 270-365 | | 200-240 |
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| - length of ordinary ahydrothecate internodes | 315-460 | | 380-470 | 340-400 | | 160-300 | | 180-270 | | 135-190 |
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| - length of hydrothecate internodes | 350-395 | | 340-380 | 320 | | 255-330 | | 285-350 | | 270-380 |
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| - diameter at transverse node | 65-80 | | - | - | | 35-45 | | 40-50 | | 55-60 |
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| - length of nematothecae | 55-80 | | - | - | | 40-60 | | 55-110 | | - |
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| - diameter at rim of nematotheca | 35-50 | | - | - | | 35-40 | | 35-50 | | - |
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| Hydrotheca (cladial) |
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| - length abaxial wall | 145-165 | | 135-160 | 150-160 | | 200-235 | | 200-215 | | 190-215 |
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| - length free adaxial wall | 90-110 | | - | 80-90 | | 110-125 | | 100-110 | | - |
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| - diameter at rim | 220-245 | | 200-215 | 200-210 | | 160-200 | | 160-180 | | 190-200 |
|---|