Metalycaeus muciferus (Heude, 1885)

Pall-Gergely, Barna, Sajan, Sheikh, Tripathy, Basudev, Meng, Kaibaryer, Asami, Takahiro & Ablett, Jonathan D., 2020, Genus-level revision of the Alycaeidae (Gastropoda, Cyclophoroidea), with an annotated species catalogue, ZooKeys 981, pp. 1-220 : 1

publication ID	https://dx.doi.org/10.3897/zookeys.981.53583
publication LSID	lsid:zoobank.org:pub:5194AAC8-6B8A-473F-8A41-470A60182A0B
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scientific name	Metalycaeus muciferus (Heude, 1885)
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Metalycaeus muciferus (Heude, 1885) Fig. 33 View Figure 33

Alycoeus [sic] muciferus Heude, 1885: 96, pl. 24, figs 1, 1a.

Alycaeus (Orthalycaeus) muciferus - Möllendorff 1886: 171.

Alycaeus helicodes Gredler, 1888: 365.

Alycaeus expansus Heude, 1890: 129, pl. 38, fig. 2. syn. nov.

Alycaeus (Chamalycaeus) muciferus - Kobelt and Möllendorff 1897: 149; Kobelt 1902: 359.

Metalycaeus muciferus - Páll-Gergely et al. 2017: 88-93, figs 58, 59, 60, 61 ( helicodes Gredler is a synonym).

" Chamalycaeus " expansus - Páll-Gergely et al. 2017: 105, fig. 69L.

Type locality.

"in ditione Tchen-k’eou” ( Alycoeus muciferus ); Pe-shang, Prov. Hunan ( A. helicodes ); "Tchen K’eou” ( A. expansus ).

Material examined.

China, Tchen-k’eou, MCZ 167230 (7 syntypes of A. muciferus ); Tchen-k’eou, China, Pe-shang, Hunan, leg. Fuchs, coll. Gredler, SMF 192225 (2 paralectotypes of A. helicodes , lectotype in the Franziskanergymnasium Bozen [Bolzano, Italy], designated by Zilch 1974); HMT-215a, syntype: labelled as lectotype of A. expansus deposited in IZCAS: Tchen-k’eou (Cheng-kou County, Chong-qing, China) (Fig. 33 View Figure 33 ).

Remarks.

Protoconch conspicuously elevated from dorsal surface, its end with inconspicuous spiral striations; R1 with irregular, widely spaced ribs and fine spiral sculpture; R2 with dense, sharp, elevated ribs.

No type specimens of Alycaeus expansus were reported in American museums ( Johnson 1973). We were not able to examine the types deposited in the Beijing Museum before the revision of Chinese Alycaeidae ( Páll-Gergely et al. 2017), but could do so now. The general shell shape, colour, sculpture, and the lengths and proportions of R2 and R3 agree with those of A. muciferus , which was described from the same type locality. Consequently, we move Alycaeus expansus to the synonymy of A. muciferus .

References

Johnson, RJ, 1973. Heude's Molluscan Types: or, Asian land and fresh water mollusks, mostly from the People's Republic of China, described by P. M. Heude. Cambridge, Massachusetts (Special Occasional Publication, Department of Mollusks, Museum of Comparative Zoology, Harvard University), DOI: https://doi.org/10.5962/bhl.title.141074

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

Moellendorff, OF von, 1886. Materialen zur Fauna for China. Jahrbuecher der Deutschen Malakozoologischen Gesellschaft 13: 156 - 210, https://www.biodiversitylibrary.org/page/16355855

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

Zilch, A, 1974. Vinzenz Gredler und die Erforschung der Weichtiere Chinas durch Franziskaner aus Tirol. Archiv fuer Molluskenkunde 104: 171 - 228