Cookeconcha hystricella
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| Cookeconcha hystricella | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Order: | Stylommatophora |
| Family: | Endodontidae |
| Genus: | Cookeconcha |
| Species: | C. hystricella |
| Binomial name | |
| Cookeconcha hystricella (L. Pfeiffer, 1859) | |
| Synonyms | |
| |
Cookeconcha hystricella is a species of small air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Endodontidae.[1] It is endemic to Hawaii.[2]
The shell of Cookeconcha hystricella is typically brown to dark brown and is characterized by a spiny or bristled texture, which distinguishes it from other land snails.[3] The shell is very small, measuring only a few millimeters in diameter,[2] varying between 5.5 mm and 6 mm, while its length attains 2.5 mm.
The shell is umbilicate and discoidal, rather thin, and somewhat closely ribbed and plicate, irregularly rayed with whitish and reddish coloration. The spire is flat or sunken at the center. There are six whorls, swollen below the suture, the body whorl being rounded and not descending. The umbilicus occupies one quarter of the shell’s diameter. The aperture is oblique and rounded-lunate, constricted by six sharp lamellae — two equal ones on the ventral surface of the penultimate whorl, and four on the basal and right margins. The peristome is simple and straight. [4]
