''Alycaeus eydouxi'' is a

species A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), ...

of small

land snail A land snail is any of the numerous species of snail that live on land, as opposed to the sea snails and freshwater snails. ''Land snail'' is the common name for terrestrial molluscs, terrestrial gastropod mollusks that have gastropod shell, shel ...

s with a

gill A gill () is a respiration organ, respiratory organ that many aquatic ecosystem, aquatic organisms use to extract dissolved oxygen from water and to excrete carbon dioxide. The gills of some species, such as hermit crabs, have adapted to allow r ...

and an operculum,

terrestrial Terrestrial refers to things related to land or the planet Earth, as opposed to extraterrestrial. Terrestrial may also refer to: * Terrestrial animal, an animal that lives on land opposed to living in water, or sometimes an animal that lives on o ...

gastropod Gastropods (), commonly known as slugs and snails, belong to a large Taxonomy (biology), taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, freshwater, and fro ...

mollusk Mollusca is a phylum of protostomic invertebrate animals, whose members are known as molluscs or mollusks (). Around 76,000 extant species of molluscs are recognized, making it the second-largest animal phylum after Arthropoda. The ...

s in the family

Alycaeidae Alycaeidae is a taxonomic family of small to large tropical land snails with an operculum, terrestrial gastropod mollusk Mollusca is a phylum of protostomic invertebrate animals, whose members are known as molluscs or mollusks (). ...

Description

Protoconch A protoconch (meaning first or earliest or original shell) is an embryonic or larval shell which occurs in some classes of molluscs, e.g., the initial chamber of an ammonite or the larval shell of a gastropod. In older texts it is also called " ...

matte, without spiral lines. The region from the beginning of the

teleoconch The gastropod shell is part of the body of many gastropods, including snails, a kind of mollusc. The shell is an exoskeleton, which protects from predators, mechanical damage, and dehydration, but also serves for muscle attachment and calcium ...

to the beginning of the differently ribbed region where the sutural tube lies, consists of fine, dense, rather regular ribs with weak spiral striation; the next region of the shell extending to the constriction is long, with dense, lamellae-like, elevated ribs, which are most elevated closer to the suture. Below the ribs, the microtunnels are visible as narrow light bands between the darker, thicker stripes (visible where there are weathered areas of the shell). {{source-attribution)

Distribution

This species occurs in

Vietnam Vietnam, officially the Socialist Republic of Vietnam (SRV), is a country at the eastern edge of mainland Southeast Asia, with an area of about and a population of over 100 million, making it the world's List of countries and depende ...

References

{{reflist * {{cite journal , last1=Venmans , first1=L.A.W.C. , title=Notes on Alycaeus , journal=Proceedings of the Malacological Society of London , date=1956 , volume=32 , page=87

External links

* {{cite journal , last1=Eydoux , first1=J. , title=Mollusques du voyage de la Favorite , journal=Magazine de Zoologie. , date=1838 , volume=1838 , page=6 , url=https://biodiversitylibrary.org/page/37129027 * {{cite journal , last1=Páll-Gergely, B., Sajan, S., Tripathy, B., Meng, K., Asami, T. & Ablett, J.D. , title=Genus-level revision of the Alycaeidae (Gastropoda: Cyclophoroidea), with an annotated species catalog , journal=ZooKeys , date=2020 , issue=981 , page=29 , doi=10.3897/zookeys.981.53583 , doi-access=free , url=https://zookeys.pensoft.net/article/53583/, pmc=7644702 * {{cite journal , last1=Páll-Gergely B., Hunyadi A., Sang D.D., Naggs F. & Asami T. , title=Revision of the Alycaeidae of China, Laos and Vietnam (Gastropoda: Cyclophoroidea) I: The genera Dicharax and Metalycaeus , journal=Zootaxa , date=2017 , volume=4331 , issue=1 , page=9 , doi=10.11646/zootaxa.4331.1.1 , url=https://doi.org/10.11646/zootaxa.4331.1.1, url-access=subscription * {{cite journal , last1=Páll-Gergely , first1=B. , title=Revision of the Alycaeidae of China, Laos and Vietnam (Gastropoda: Cyclophoroidea) II: The genera Alycaeus and Pincerna , journal=Zootaxa , date=2023 , volume=5249 , issue=2 , page=254 , doi=10.11646/zootaxa.5249.2.4 , pmid=37044425 , url=https://doi.org/10.11646/zootaxa.5249.2.4 {{Commons category {{Taxonbar, from=Q106091692 eydouxi Gastropods described in 1956