''Drymaeus cecileae'' is a

species In biology, a species is the basic unit of 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 the appropriate s ...

tropical The tropics are the regions of Earth surrounding the Equator. They are defined in latitude by the Tropic of Cancer in the Northern Hemisphere at N and the Tropic of Capricorn in the Southern Hemisphere at S. The tropics are also referred to ...

air-breathing

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 gastropod mollusks that have shells (those without shells are known as ...

, a

pulmonate Pulmonata or pulmonates, is an informal group (previously an order, and before that a subclass) of snails and slugs characterized by the ability to breathe air, by virtue of having a pallial lung instead of a gill, or gills. The group includ ...

gastropod The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, from freshwater, and from land. T ...

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 e ...

in the family

Bulimulidae Bulimulidae is a taxonomic family of medium-sized to large, air-breathing, tropical and sub-tropical land snails, terrestrial pulmonate gastropod molluscs in the superfamily Orthalicoidea.MolluscaBase eds. (2020). MolluscaBase. Bulimulidae Tryon, ...

Distribution

Distribution of ''Drymaeus cecileae'' includes

Peru , image_flag = Flag of Peru.svg , image_coat = Escudo nacional del Perú.svg , other_symbol = Great Seal of the State , other_symbol_type = Seal (emblem), National seal , national_motto = "Fi ...

Loreto Region Loreto () is Peru's northernmost department and region. Covering almost one-third of Peru's territory, Loreto is by far the nation's largest department; it is also one of the most sparsely populated regions due to its remote location in the Ama ...

,Breure A. S. H. & Mogollón Avila V. (2010). "Well-known and little-known: miscellaneous notes on Peruvian Orthalicidae (Gastropoda, Stylommatophora)". ''

Zoologische Mededelingen ''Zoologische Mededelingen'' was a peer-reviewed open access scientific journal publishing papers and monographs on animal systematics. The publisher was the National Museum of Natural History Naturalis in the Netherlands. The first issue appeared ...

'' 84
HTM
. Tarapoto (type locality), and Juan Guerra, on the

Huallaga River The Huallaga River is a tributary of the Marañón River, part of the Amazon Basin. Old names for this river include ''Guallaga'' and ''Rio de los Motilones''. The Huallaga is born on the slopes of the Andes in central Peru and joins the Marañón ...

Description

The living animal is brownish-beige throughout, including the tentacles. The shell is umbilicated, ovate-pyramidal, thin, translucid and shining. The color is pale buff, with elegant longitudinal narrow tawny streaks. The shell has 6

whorls A whorl ( or ) is an individual circle, oval, volution or equivalent in a whorled pattern, which consists of a spiral or multiple concentric objects (including circles, ovals and arcs). Whorls in nature File:Photograph and axial plane floral d ...

, that are a little convex. The last whorl is about as long as the spire. The suture is impressed. The

spire A spire is a tall, slender, pointed structure on top of a roof of a building or tower, especially at the summit of church steeples. A spire may have a square, circular, or polygonal plan, with a roughly conical or pyramidal shape. Spires are ...

is conic and acute. The

aperture In optics, an aperture is a hole or an opening through which light travels. More specifically, the aperture and focal length of an optical system determine the cone angle of a bundle of rays that come to a focus in the image plane. An opt ...

is little oblique, oblong, and has a very pale lilac border within. The columella is slightly arcuate. The peristome is thin, expanded, buff or white, not continuous. The width of the shell is 7–10 mm. The height of the shell is 17–22 mm. Specimen by Breure (2010) corresponds to the description given by

Pilsbry Henry Augustus Pilsbry (7 December 1862 – 26 October 1957) was an American biologist, malacologist and carcinologist, among other areas of study. He was a dominant presence in many fields of invertebrate taxonomy for the better part of a centu ...

(1898).Pilsbry H. A. (1897-1898). "American Bulimulidae: ''Bulimulus'', ''Neopetraeus'', ''Oxychona'', and South American ''Drymaeus''". ''

Manual of Conchology George Washington Tryon Jr. (20 May 1838 – 5 February 1888) was an American malacologist who worked at the Academy of Natural Sciences in Philadelphia. Biography George Washington Tryon was the son of Edward K. Tryon and Adeline Savidt. ...

'' (2)11: 1-339
page 230plate 42
fig. 52. He regarded this taxon as a colour form of ''

Drymaeus strigatus ''Drymaeus strigatus'' is a species of tropical air-breathing land snail, a pulmonate gastropod mollusk in the family Bulimulidae. Distribution * PeruBreure A. S. H. & Mogollón Avila V. (2010). "Well-known and little-known: miscellaneou ...

'', which, however, has always a lilac band on the inside, bordering the peristome. While ''Drymaeus'' species are known for their intraspecific variation in colour pattern, we here consider ''Drymaeus cecileae'' as a distinct taxon characterized by the more or less orange line behind the peristome, visible both on the inside and outside of the shell, and by being more slender than ''

''.

References

This article incorporates public domain text from the reference and CC-BY-3.0 text from the reference {{Taxonbar, from=Q5309716 Drymaeus Gastropods described in 1858