''Labyrinthus umbrus'' is a

species In biology, a species is the basic unit of Taxonomy (biology), classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of ...

of air-breathing land snail, a

terrestrial Terrestrial refers to things related to land or the planet Earth. 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 or near the ground, as opposed to ...

pulmonate gastropod

mollusk Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is es ...

in the family

Labyrinthidae Labyrinthidae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Helicoidea.MolluscaBase eds. (2020). MolluscaBase. Labyrinthidae Borrero, Sei, D. G. Robinson & Rosenberg, 2017. Accessed throug ...

. This taxon was described as ''Labyrinthus umbrus'' by

Fred Gilbert Thompson Fred may refer to: People * Fred (name), including a list of people and characters with the name Mononym * Fred (cartoonist) (1931–2013), pen name of Fred Othon Aristidès, French * Fred (footballer, born 1949) (1949–2022), Frederico Ro ...

from Rancho Grande,

Aragua Aragua State ( es, Estado Aragua, ) is one of the 23 states of Venezuela. It is located in the north-central region of Venezuela. It has plains and jungles and Caribbean beaches. The most popular are Cata and Choroni. It has Venezuela's first n ...

Venezuela Venezuela (; ), officially the Bolivarian Republic of Venezuela ( es, link=no, República Bolivariana de Venezuela), is a country on the northern coast of South America, consisting of a continental landmass and many islands and islets in ...

in 1957.

Alan Solem George Alan Solem (21 June 1931 – 26 March 1990),Coan E. V., Kabat A. R. & Petit R. E. (2009). ''2,400 years of malacology, 6th ed.'', February 15, 2009, 830 pp. + 32 pp. nnex of Collations American Malacological Society: http://www.malacologi ...

considered this taxon as a subspecies ''Labyrinthus leucodon umbrus'' in 1966.

Distribution

This species occurs in: * Venezuela Solem A. (31 May) 1966
''The Neotropical land snail genera: Labyrinthus and Isomeria (Pulmonata, Camaenidae)''
Fieldiana: Zoology, volume 50
page 58
59. ** El Hatillo Municipality, Miranda, Venezuela

References

Labyrinthidae Gastropods described in 1957 {{Pleurodontidae-stub