Anthinus henselii

Anthinus henselii
Drawing of apertural and abapertural views of a shell of Anthinus henselii.
Conservation status
Vulnerable  (IUCN 2.3) [1]
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
(unranked):	clade Heterobranchia clade Euthyneura clade Panpulmonata clade Eupulmonata clade Stylommatophora informal group Sigmurethra
Superfamily:	Acavoidea
Family:	Strophocheilidae
Genus:	Anthinus
Species:	A. henselii
Binomial name
Anthinus henselii (Martens, 1868) [2]
Synonyms
Bulimulus henselii Martens, 1868 Drymaeus henselii (Martens, 1868) Drymaeus henseli (Martens, 1868) Gonyostomus (Anthinus) henseli (Martens, 1868)

Anthinus henselii ^[3] is a species of air-breathing land snail, a terrestrial gastropod mollusk in the family Strophocheilidae.

This species is also known as Drymaeus henselii and then it is placed in the subfamily Bulimulinae, family Orthalicidae.

This species was originally described by Eduard von Martens as Bulimulus henselii in 1868. The specific name is in honor of the German naturalist, paleontologist and zoologist Reinhold Friedrich Hensel (1826–1881), who collected the first two specimens from which the species was described. ^[2]

The type locality is Costa da Serra ^[2] in the state Rio Grande do Sul, ^[4] which is the southernmost State of Brazil. This species is endemic to Brazil.

This species is accidentally listed twice in the Checklist of Rio Grande do Sul State (2009): ^[5] as Drymaeus henselii (Martens, 1868) (subfamily Bulimulinae, family Orthalicidae) and as Gonyostomus henselii (Martens, 1868) in family Strophocheilidae. This species also inhabits Santa Catarina in Brazil (listed as Drymaeus henselii (Martens, 1868)). ^[6]

Description

The shell is perforate, ovate-turreted, irregularly striate and sculptured with very delicate, very close spiral lines. The color of the shell is whitish, painted with brown streaks, which are confluent in the middle of each whorl. The apex is obtuse, brownish. The shell has 6 whorls, that are rather flattened. The suture is irregularly undulating. The last whorl is little convex below. ^[4]

The aperture is subvertical, ovate-oblong, nearly half the length of the shell. The peristome is a little thickened, lightly spreading and white. The columellar margin is dilated, not closing the perforation, expanded above in a parietal lamina. Columella itself is twisted. ^[4]

The length of the shell is 40 mm. The width of the shell is 28 mm. The height of the aperture is 20 mm. The width of the aperture is 11 mm. ^{[2] [4]}

References

This article incorporates public domain text from the reference. ^[4]

1. Mansur M.C.D. 1996. Drymaeus henseli. 2006 IUCN Red List of Threatened Species. Archived June 27, 2014, at the Wayback Machine Downloaded on 6 August 2007.
2. (in German) Martens E. 1868. Ueber südbrasilianische Land-und Süsswassermollusken. Nach den Sammlungen von Dr. R. Hensel Malakozoologische Blätter 15: 169-217. Original description is on page 180.
3. (in Portuguese) Norma Campos Salgado & Arnaldo C. dos Santos Coelho. 2003. Moluscos terrestres do Brasil (Gastrópodes operculados ou não, exclusive Veronicellidae, Milacidae e Limacidae) Archived 2011-10-04 at the Wayback Machine . Rev. Biol. Trop. 51 (Suppl. 3): 149-189. (in Portuguese with English abstract)
4. Pilsbry H. A. 1897-1898 Manual of Conchology. Second series: Pulmonata. Volume 11. American Bulimulidae: Bulimulus, Neopetraeus, Oxychona, and South American Drymaeus. Pages 254-255. Plate 41. Figure 37-38.
5. Agudo-Padrón A. I. (14 May) 2009. Recent Terrestrial and Freshwater Molluscs of Rio Grande do Sul State, RS, Southern Brazil Region: A Comprehensive Synthesis and Check List Archived 2012-11-05 at the Wayback Machine . Visaya April 2009, pages 1-13.
6. Aisur Ignacio Agudo-Padrón (21 July) 2008. Recent Terrestrial And Freshwater Molluscs Of Santa Catarina State, Sc, Southern Brazil Region: A Comprehensive Synthesis And Check List. Visaya April 2009, pages 1-12.