Dicharax (?) spiracellum (A. Adams & Reeve, 1850)

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
persistent identifier	https://treatment.plazi.org/id/58E0D59A-9287-5A08-A1BD-EDD87A6F5353
treatment provided by	ZooKeys by Pensoft (2020-10-29 22:48:38, last updated 2024-11-25 21:42:09)
scientific name	Dicharax (?) spiracellum (A. Adams & Reeve, 1850)
status

Treatment

Cyclostoma spiracellum A. Adams & Reeve, 1850: 56, pl. 14, fig. 1.

Alycaeus spiracellum - E. von Martens 1867: 150-151; Reeve 1878: pl. 4, species 33; Godwin-Austen 1889: 346, pl. 37, fig. 6.

Alycaeus (Dicharax) spiracellum - Kobelt 1902: 376.

Alycaeus kurodai Pilsbry & Y. Hirase 1908: 60, pl. 4, figs 1-4.

Alycaeus kurodae (sic) - Pilsbry 1926: 454.

Chamalycaeus (Metalycaeus) kurodai - Kwon and Habe 1979: 26.

Dicharax spiracellum Páll-Gergely 2019: 192, fig 1A-D. ( kurodai Pilsbry & Y. Hirase, 1908 is a synonym)

Type locality.

"Borneo, under decayed vegetable matter in the forests" ( spiracellum ), "Cheju (Quelpart) Island" ( kurodai ). Páll-Gergely (2019) emended the type locality of C. spiracellum to "probably Cheju Island, South Korea". See Remarks.

Material examined.

Borneo, 'Samarang pl. 14. F. 1' (in pencil), coll. Mrs Lombe Taylor, NHMUK 1874.12.11.233 (possible syntype); Borneo, NHMUK 1889.12.7.27 (1 shell); 済州島 (Seishūtō = Jeju Island), coll. Hirase (#275) NSMT-Mo 7593 (4 shells, labelled as A. kurodai ); ANSP 95742 (1 syntype of A. kurodai ) (photographs examined).

Remarks.

protoconch low, rather matte, with irregular fine wrinkles; R2 with ca. 24 low ribs; boundaries between ribs hardly visible; ribs situated very close to each other near tube; distance between ribs at edge of body whorl roughly a rib width; no spiral lines visible on R1.

Dicharax spiracellum (A. Adams & Reeve, 1850) was described from Borneo, based on shells from the expedition of HMS Samarang (1843-1846). Alycaeus kurodai Pilsbry & Y. Hirase, 1908, described from the Korean Cheju Island, is conchologically identical to Dicharax spiracellum and is a junior synonym of the former species ( Páll-Gergely 2019). The type specimens of Dicharax spiracellum were probably obtained when the Samarang visited Cheju Island, and the specimens were most likely mislabelled ( Páll-Gergely 2019). Therefore, the type locality of D. spiracellum was emended to "probably Cheju Island, South Korea" ( Páll-Gergely 2019).

References

Godwin-Austen, HH, 1889. On a collection of land shells made in Borneo by Mr. A. Everett, with Descriptions of supposed new Species. Part I. Cyclostomacae. Proceedings of the Zoological Society of London 1889: 332 - 355, https://biodiversitylibrary.org/page/28698963

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

Kwon, OK, Habe, T, 1979. A list of non marine molluscan fauna of Korea. Korean Journal of Limnology 121 (2): 25 - 33

Martens, E von, 1867. Die Preussische Expedition Nach Ost-Asien. Nach Amtlichen Quellen. Zoologischer Theil. Zweiter Band. Die Landschnecken. Verlag der Koeniglichen Geheimen Ober-Hofbuchdruckerei, Berlin, https://www.biodiversitylibrary.org/page/12890927

Pall-Gergely, B, 2019. Endemic to Borneo or the Korean Cheju island? Mystery of mislabelled land snail solved after 170 years (Gastropoda: Cyclophoroidea: Alycaeidae). Molluscan Research 39 (2): 190 - 193, DOI: https://doi.org/10.1080/13235818.2018.1522723

Pilsbry, HA, 1926. Review of the land Mollusca of Korea. Proceedings of the Academy of Natural Sciences of Philadelphia 78: 453 - 475

Reeve, LA, 1878. Monograph of the genus Alycaeus. In: Reeve LA (Ed.) Conchologica Iconica: or, Illustrations of the Shells of Molluscous Animals. Reeve and Co., London, 20: 13 pp. [+ 6 pls] https://www.biodiversitylibrary.org/page/8230573