Genus-level revision of the Alycaeidae (Gastropoda, Cyclophoroidea), with an annotated species catalogue
Author
Pall-Gergely, Barna
Plant Protection Institute, Centre for Agricultural Research, Herman Otto ut 15, Budapest, H- 1022, Hungary
https://orcid.org/0000-0002-6167-7221
pallgergely2@gmail.com
Author
Sajan, Sheikh
Zoological Survey of India, Prani Vigyan Bhawan, M Block, New Alipore, Kolkata 700053, West Bengal, India & Wildlife Institute of India, Chandrabani, Dehradun 248 002, Uttarakhand, India
https://orcid.org/0000-0002-2785-6824
Author
Tripathy, Basudev
Zoological Survey of India, Prani Vigyan Bhawan, M Block, New Alipore, Kolkata 700053, West Bengal, India
Author
Meng, Kaibaryer
National Zoological Museum of China, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
Author
Asami, Takahiro
Department of Biology, Shinshu University, Matsumoto 390 - 8621, Japan
https://orcid.org/0000-0001-5706-0272
Author
Ablett, Jonathan D.
Mollusca Section, Invertebrates Division, Department of Life Sciences, The Natural History Museums, London SW 7 5 BD, United Kingdom
text
ZooKeys
2020
981
1
220
http://dx.doi.org/10.3897/zookeys.981.53583
journal article
http://dx.doi.org/10.3897/zookeys.981.53583
1313-2970-981-1
5194AAC86B8A473F8A41470A60182A0B
7C44C797C4125A71BAE032A55E6FA5DC
Dicharax (?) placenovitas (Minato, 1981)
Cipangocharax placenovitas
Minato, 1981: 135-137, figs 1-3.
Cipangocharax placenovitas
-
Azuma 1982
: 12-13;
Minato 1988
: 17, pl. 2, figs 3, 4;
Minato 1993
: 1, fig. 6.
Type locality.
"Arakura (Limestone region), Haruno-cho, Agawa-gun, Kochi-ken, Japan".
Material examined.
NSMT-Mo 58918 (holotype).
Remarks.
Protoconch low, smooth, but the last 0.5 whorl of the protoconch was slightly weathered; ca. 24 ribs on R2, well separated and wide near beginning of tube, gradually becoming narrower, and dense towards end of tube; near tube ribs situated very close to each other, some of them overlap with their neighbours; ribs clearly separated at edge of body whorl, but spaces still much narrower than a rib width; no spiral lines visible on R1.
Operculum with a big central nipple on its inner side; however, the outer belt was absent. The columellar margin of the aperture is not sinuated. The aperture forms a connection between the
Cipangocharax
-type and normal-type aperture.