Scutalus phaeocheilus
| Scutalus phaeocheilus | |
|---|---|
| |
| Holotype of the shell of Scutalus phaeocheilus altoensis. Shell height 37.2 mm. | |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Heterobranchia |
| Order: | Stylommatophora |
| Family: | Bulimulidae |
| Genus: | Scutalus |
| Species: | S. phaeocheilus
|
| Binomial name | |
| Scutalus phaeocheilus (
Haas, 1955)[1] | |
Scutalus phaeocheilus is a
Subspecies
- Scutalus phaeocheilus altoensis Breure & Mogollón Avila, 2010[2]
Distribution
Scutalus phaeocheilus phaeocheilus occurs in south of the
Description
When describing the nominate taxon, Haas already noted the relationship with Scutalus proteiformis.[2] He stated that this species ‘seems to lack the granules entirely’.[1][2] According to Pilsbry (1897),[3] who copied the original description, the ‘granulation [is] confined to the last whorl’.[2] However, Scutalus phaeocheilus altoensis is smaller and slightly stouter than Scutalus proteiformis and is also slightly more granulose than this species, especially visible in fresh specimens.[2] Moreover, Scutalus proteiformis is said to have the aperture dark brown coloured.[2] Scutalus proteiformis species, which has not been figured, was mentioned by Weyrauch (1967)[4] from northern Peru without further information.[2]
Scutalus phaeocheilus altoensis
The subspecific name altoensis refers to El Alto, the type locality.[2]
Scutalus phaeocheilus altoensis is characterized by the whitish colour, the
The height of the shell is up to 38.1 mm, 1.71 times as long as wide, deeply perforated, conical, with slightly convex sides and solid. Colour is uniformly (greyish-)whitish, the upper
The width of the shell is 19.9 - 22.7 mm. The height of the shell is 34.3 - 38.1 mm. The width of the aperture is 14.2 – 17 mm. The height of the aperture is 19.3 - 22.8 mm. The height of the last whorl is 25.1 – 28 mm.[2]
The holotype of Scutalus phaeocheilus altoensis has 5.8 whorls and dimension of holotype are as follows: The width of the shell is 21.4 mm. The height of the shell is 37.2 mm. The width of the aperture is 14.6 mm. The height of the aperture is 19.5 mm. The height of the last whorl is 25.9 mm.[2]
Scutalus phaeocheilus altoensis differs from Scutalus phaeocheilus phaeocheilus by (1) being slightly smaller, (2) having the lip more broadly expanded and (3) having the aperture differently coloured (the nominate taxon has the aperture liver-coloured).
References
This article incorporates CC-BY-3.0 text from the reference [2]
- ^ Fieldiana Zoology37: 303-337.
- ^ a b c d e f g h i j k l m n o Breure A. S. H. & Mogollón Avila V. (2010). "Well-known and little-known: miscellaneous notes on Peruvian Orthalicidae (Gastropoda, Stylommatophora)". Zoologische Mededelingen 84. HTM.
- ^ Pilsbry H. A. (1897). "Description of new South American bulimuli". Proceedings of the Academy of Natural Sciences, Philadelphia 49: 18-22.
- ^ Weyrauch W. K. (1967). "Treinta y ocho nuevos gastrópodos terrestres de Venezuela, Colombia, Ecuador, Brasil y Perú". Acta Zoologica Lilloana 21: 343-455.