Chamalycaeus Moellendorff , 1897
publication ID |
https://dx.doi.org/10.3897/zookeys.981.53583 |
publication LSID |
lsid:zoobank.org:pub:5194AAC8-6B8A-473F-8A41-470A60182A0B |
persistent identifier |
https://treatment.plazi.org/id/6BF61B61-D6F3-59F3-863D-E41A069DC49A |
treatment provided by |
ZooKeys by Pensoft (2020-10-29 22:48:38, last updated 2024-11-25 21:42:09) |
scientific name |
Chamalycaeus Moellendorff , 1897 |
status |
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Genus Chamalycaeus Moellendorff, 1897
Alycaeus (Chamalycaeus) Möllendorff, 1897b: 93.
Chamalycaeus - Kobelt and Möllendorff 1897: 148; Páll-Gergely et al. 2017: 5-7.
Chamalycaeus (Chamalycaeus) - Thiele 1929: 107-108; Wenz 1938: 477-478; Egorov 2013: 35.
Type species.
Alycaeus (Chamalycaeus) fruhstorferi (Fig. 6B View Figure 6 ) by monotypy, see also Remarks.
Diagnosis.
Shell very small to medium sized (D: 2-5 mm), usually flattened, discoid or low triangular, protoconch smooth (or very finely pitted), elevated even if the spire is low; R1 usually roughly reticulated due to spiral striation and radial ribs (sometimes prominent); R2 from short to very long, with widely spaced, sharp, elevated ribs; R3 normally developed. Operculum usually thin, without notable outer structures. Radula is known for a single species (central tooth with five cusps, broad, central cusp pointed).
Differential diagnosis.
See under Alycaeus and Table 3 View Table 3 . Metalycaeus species are identical, with the exception of the spirally striated protoconch.
Distribution.
Chamalycaeus is distributed from the southeastern Himalaya Region, the Malay Peninsula, Sumatra, Java, Borneo, Sulawesi, and the Philippine Palawan Island (Fig. 9 View Figure 9 ).
Remarks.
Kobelt and Möllendorff (1897) listed the species of “Pneumonopoma”, which included all members of the genus Alycaeus . They introduced "Subgenus Chamalycaeus n." ( Kobelt and Möllendorff 1897: 148), indicating it as a new subgenus, and included 44 species within their new group. The subgenus Chamalycaeus , however, was previously mentioned in another paper in the same volume of the Nachrichtsblatt der Deutschen Malakozoologischen Gesellschaft, in which Möllendorff (1897b: 93) described Alycaeus (Chamalycaeus) fruhstorferi . Möllendorff’s (1897b) paper was published in July-August, whereas that of Kobelt and Möllendorff (1897) was published in September-October. Accordingly, the genus Chamalycaeus was described by Möllendorff (1897) and its type species is Alycaeus (Chamalycaeus) fruhstorferi by monotypy. On the other hand, Alycaeus (Chamalycaeus) fruhstorferi was not listed in Kobelt’s and Möllendorff’s (1897) paper, which indicates that they aimed to describe A. fruhstorferi after their revision of Alycaeus . Moreover, Kobelt’s (1902) monograph referred to Chamalycaeus as it was introduced by Kobelt and Möllendorff (1897). Almost all subsequent treatments erroneously attributed the name Chamalycaeus to Kobelt & Möllendorff, 1897 ( Kobelt 1902; Gude 1921; Yen 1939; Zilch 1957; Azuma 1980; Minato 1982b, 1987a, 2005; Minato and Yano 1988; Egorov 2005; Zhang et al. 2008) and referred to Alycaeus andamaniae Benson, 1861 as the type species as subsequent designated by Gude (1921). The ICZN Code 70.2 states the following: "If it is found that an earlier type species fixation has been overlooked, the overlooked fixation is to be accepted and any later fixations are invalid. If this is considered to cause instability or confusion the case is to be referred to the Commission for a ruling". Therefore, we must examine whether the correction of the type fixation would cause instability. In our view, confusion or instability would be caused only if the majority of authors who have described species within Chamalycaeus were unaware of the shell morphology of Alycaeus andamaniae (incorrectly selected as the type species for Chamalycaeus ). No detailed description of Alycaeus andamaniae has ever been published, and our revision suggests that most authors who described Chamalycaeus species did not examine samples of Alycaeus andamaniae . Thus, we find no reason to present this issue to the Commission. Instead, we follow Egorov (2013) in accepting Möllendorff (1897b) as the author of Chamalycaeus . Thus, in accordance with Art. 70.2 of the Code we clarify that Alycaeus (Chamalycaeus) fruhstorferi is the type species of Chamalycaeus Möllendorff, 1897 by monotypy.
Azuma, M, 1980. Description of a New Species of the Genus Awalycaeus Kuroda, 1915, (Family Cyclophoridae) from Mt. Sarumasa, Shimane Pref., Japan. Venus 39 (3): 139 - 141
Egorov, RV, 2005. Preliminary classification of the recent terrestrial pectinibranch mollusks. Club Conchylia Informationen 37(1/2): 21-32.
Egorov, RV, 2013. Treasure of Russian Shells. Supplement 3. A review of the genera of the terrestrial pectinibranch molluscs (synopsis mainly based on published data). Part III. Littoriniformes: Liareidae, Pupinidae, Diplommatinidae, Alycaeidae, Cochlostomidae. R. Egorov, Moscow
Gude, GK, 1921. The Fauna of British India including Ceylon and Burma. Mollusca. III. Land operculates (Cyclophoridae, Truncatellidae, Assimineidae, Helicinidae). Taylor and Francis, London, DOI: https://doi.org/10.5962/bhl.title.12890
Kobelt, W, Moellendorff, O von, 1897. Catalog der gegenvaertig lebend bekannten Pneumonopomen. Nachrichtsblatt der Deutschen Malakozoologischen Gesellschaft 29: 73-88, 105-120, 137-152. https://www.biodiversitylibrary.org/page/28228303
Kobelt, W, 1902. Das Tierreich. Eine Zusammenstellung und Kennzeichnung der rezenten Tierformen. In Verbindung mit der Deutschen Zoologischen Gesellschaft herausgegeben von der Koeniglich Preussischen Akademie der Wissenschaften zu Berlin. Mollusca: Cyclophoridae. R. Friedlaender und Sohn, Berlin, https://biodiversitylibrary.org/page/1000211
Minato, H, 1982b. Land shell fauna of Ujigunto and Kusakakigunto Islets, the southwestern Kyushu, Japan, with the descriptions of a new genus and six new species. Venus 41 (2): 124 - 140
Minato, H, 1987a. The new alycaeid species from Japan. Venus 45 (4): 222 - 225
Minato, H, Yano, Sh, 1988. Addition to the subgenus Sigmacharax (Alycaeidae) from Chūgoku District, Japan. Venus 47 (1): 33 - 36
Minato, H, 2005. Two new species of Chamalycaeus (Gastropoda: Alycaeidae) from Miyazaki Prefecture, southeastern Kyushu, Japan. Venus 64: 39 - 44
Moellendorff, O von, 1897b. Neue Landschnecken von Java. Nachrichtsblatt der Deutschen Malakozoologischen Gesellschaft 29: 89 - 97, https://biodiversitylibrary.org/page/28228249
Pall-Gergely, B, Hunyadi, A, Đỗ, ĐS, Naggs, F, Asami, T, 2017. Revision of the Alycaeidae of China, Laos and Vietnam (Gastropoda: Cyclophoroidea) I: The genera Dicharax and Metalycaeus. Zootaxa 4331 (1): 1 - 124, DOI: https://doi.org/10.11646/zootaxa.4331.1.1
Thiele, J, 1929. Handbuch der systematischen Weichtierkunde, Teil 1. Verlag von Gustav Fischer, Jena
Yen, T-C, 1939. Die Chinesischen Land-und Suesswasser-Gastropoden des Natur-Museums Senckenberg. Abhandlungen der Senckenbergischen Naturforschenden Gesellschaft, Frankfurt am Main
Zhang, W-H, Chen, D-N, Zhou, W-Ch, 2008. A new species of the genus Chamalycaeus from China (Gastropoda, Prosobranchia, Mesogastropoda, Cyclophoridae). Acta Zootaxonomica Sinica 33 (4): 745 - 747
Zilch, A, 1957. Die Typen und Typoide des Natur-Museums Senckenberg, 20: Mollusca, Cyclophoridae, Alycaeinae. Archiv fuer Molluskenkunde 86(4/6): 141-150.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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Cyclophoroidea |
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Chamalycaeus Moellendorff , 1897
Pall-Gergely, Barna, Sajan, Sheikh, Tripathy, Basudev, Meng, Kaibaryer, Asami, Takahiro & Ablett, Jonathan D. 2020 |
Chamalycaeus
Moellendorff 1897 |
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