Drymaeus expansus
From Wikipedia, the free encyclopedia
| Drymaeus expansus | |
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| Different views of a syntype specimen of D. iodostomus, a junior synonym of D. expansus, held at the MNHN, Paris | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Order: | Stylommatophora |
| Family: | Bulimulidae |
| Genus: | Drymaeus |
| Species: | D. expansus |
| Binomial name | |
| Drymaeus expansus (L. Pfeiffer, 1848) | |
| Synonyms[1][2] | |
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List
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Drymaeus expansus is a species of tropical air-breathing land snail, a pulmonate gastropod mollusc in the family Bulimulidae that is native to parts of South America. It was described in 1848, with Huallaga, in Peru, as the type locality. The animal has a streaked shell, white to brownish in color, measuring 40 mm in length and 22 mm in width with 7 whorls. It has an open umbilicus and is densely striated longitudinally, also featuring a markedly expanded peristome in all directions.
Phylogenetic analyses based on genetic markers place Drymaeus expansus in a clade that also includes the species D. branneri and D. pamplonensis. However, given the great diversity of the genus Drymaeus and the small number of species analyzed, these data are still considered preliminary.
The species was first described in 1848 by German conchologist Ludwig Karl Georg Pfeiffer as Bulimus expansus. Pfeiffer mentioned the Amazonian region of Huallaga, in Peru, as the type locality.[3] The specific epithet expansus originates from Latin, meaning "stretched" or "extended".[4]
According to MolluscaBase, the mollusk-oriented branch of WoRMS,[5] Drymaeus expansus includes two subspecies: Drymaeus expansus expansus, the nominate subspecies, and Drymaeus expansus scitus (H. Adams, 1867).[1]