Zyzzyxdonta alata

Zyzzyxdonta alata is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Endodontidae.

Zyzzyxdonta alata
Scientific classification
Kingdom:
Animalia
Phylum:
Mollusca
Class:
Gastropoda
(unranked):
clade Heterobranchia
clade Euthyneura
clade Panpulmonata
clade Eupulmonata
clade Stylommatophora
informal group Sigmurethra
Superfamily:
Punctoidea
Family:
Endodontidae
Genus:
Zyzzyxdonta
Species:
Z. alata
Binomial name
Zyzzyxdonta alata
Solem, 1976[2]

This is the only species in the genus Zyzzyxdonta. The genus was named Zyzzyxdonta because it has many features that are the opposite to the genus Aaadonta. The name, given to the snail by malacologist Alan Solem, is the last word in many species dictionaries, just after Zyzzyx; however, they both, in fact, precede Zyzzyzus.

They live in the Pacific islands of Palau and Fiji.

Description

The shell of Zyzzyxdonta alata has apical sculpture typical of the Endodontidae. The postnuclear whorls have widely spaced radial ribs which protrude into hollow, winglike structures at the carinated periphery.

There are about 5 whorls that are rather loosely coiled. The apex is flat, but the spire is slightly elevated.

The body whorl has a protruded, keeled periphery, not descending more rapidly, with a distinct subperipheral sulcus. The umbilicus is widely open and U-shaped. The last whorl does not decoil as rapidly. The apertural barriers consist of three parietals, a single columellar one that slants downwards, and three long palatals. All barriers have large, swollen and serrated beads above them.[2]

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See also

References
  1. Barker, G. (2012). "Zyzzyxdonta alata". IUCN Red List of Threatened Species. 2012: e.T195626A2395368. doi:10.2305/IUCN.UK.2012.RLTS.T195626A2395368.en. Retrieved 11 January 2020.
  2. Solem A. (29 October 1976) Endodontoid land snails from Pacific Islands (Mollusca: Pulmonata: Sigmurethra). Part I. Family Endodontidae. Field Museum of Natural History, Chicago, page 466.
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