| 词条 | Helicina rhodostoma | ||
| 释义 |
| name = Helicina rhodostoma | image = Helicina rhodostoma.png | image_caption = Helicina rhodostoma. | status = | status_system = | status_ref = | regnum = Animalia | phylum = Mollusca | classis = Gastropoda | unranked_superfamilia = clade Neritimorpha clade Cycloneritimorpha | superfamilia = Helicinoidea | familia = Helicinidae | genus = Helicina | species = H. rhodostoma | binomial = Helicina rhodostoma | binomial_authority = Gray, 1824[1] | synonyms_ref = [2] | synonyms =
}} Helicina rhodostoma is a species of tropical land snail with an operculum, a terrestrial gastropod mollusk in the family Helicinidae. Shell descriptionRobert John Lechmere Guppy (1868)[4] noted that this species is not found above 1000 m altitude.[2] Three names have been used for this species, but material by Robinson et al. (2009)[2] shows that the forms intergrade, illustrating the variability of the species. In general, populations from higher altitudes have a more pronounced columellar spine, and are more likely to have a red to reddish-orange aperture, as seen in typical Helicina rhodostoma.[2] Populations from drier, coastal areas tend to lack a columellar spine, and the aperture may be white or yellow.[2] Juvenile specimens of this species often have a hairy periostracum, which is gradually worn off as the snail reaches sexual maturity.[2]DistributionHelicina rhodostoma is endemic to the West Indian island of Dominica.[2]Despite the fact that Helicina rhodostoma was originally erroneously described from Guadeloupe – and in subsequent reports from that island the error has been perpetuated – this species is undoubtedly a Dominican endemic.[2] It has not been found during subsequent surveys of Guadeloupe and Marie-Galante.[2] The fact that no museum material exists labelled “Guadeloupe”, not even in the Muséum national d'histoire naturelle in Paris, indicates that the species has never been collected on that island.[2] The synonymy of Helicina goldfussi and Helicina rhodostoma inermis is confirmed by morphometrics and anatomical studies.[2] EcologyHelicina rhodostoma can be found living on trees, on ferns, and also between rocks and gravel.[2]ReferencesThis article incorporates CC-BY-3.0 text from the reference.[5] 1. ^Gray J. E. (1824). "Monograph of the genus Helicina". Zoological Journal 1: [https://archive.org/stream/zoologicaljourna01jour#page/62/mode/2up 62]-71, pl. 5. Helicina rhodostoma is on page 68, [https://archive.org/stream/zoologicaljourna01jour#page/n108/mode/1up pl. 6], fig. 9. 2. ^Boettger O. (1887). "Vier neue westindische Pneumopomen". Jahrbücher der Deutschen Malakozoologischen Gesellschaft 13: 102-104, pl. 4. Helicina rhodostoma is on the page 103, pl. 4, fig. 10. 3. ^Wagner A. J. (1907-1911). "Die Familie der Helicinidae". In: Küster H. C. (ed.). Systematisches Conchylien-Cabinet von Martini und Chemnitz, (N.F.) 1(18:2): 1-391, pls 1-70. Helicina rhodostoma is on the page 327, pl. 66 figs 11-12. 4. ^Guppy R. J. L. (1868). "On the terrestrial mollusks of Dominica and Grenada, with an account of some new species from Trinidad". Annals and Magazine of Natural History (4)1: [https://archive.org/stream/annalsmagazineof411868lond#page/428/mode/2up 429]-442. 5. ^1 2 3 4 5 6 7 8 9 10 11 12 Robinson D. G., Hovestadt A., Fields A. & Breure A. S. H. (July 2009). "The land Mollusca of Dominica (Lesser Antilles), with notes on some enigmatic or rare species". Zoologische Mededelingen 83 http://www.zoologischemededelingen.nl/83/nr03/a13 External links
3 : Helicinidae|Endemic fauna of Dominica|Gastropods described in 1824 |
||
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。