| Gibberula oriens | |
|---|---|
 | |
| Shell of Gibberula oriens (holotype at MNHN, Paris) | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Neogastropoda |
| Family: | Cystiscidae |
| Subfamily: | Cystiscinae |
| Genus: | Gibberula |
| Species: | G. oriens |
| Binomial name | |
| Gibberula oriens McCleery, 2008 [1] | |
Gibberula oriens is a species of very small sea snail, a marine gastropod mollusk or micromollusk in the family Cystiscidae. [2]
The length of the shell attains 1.84 mm.
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The shell is smooth, shiny, and semi-transparent, with a broadly triangular outline. [3] Adult size ranges from 1.76 × 1.29 mm to 1.89 × 1.37 mm, yielding a width-to-length ratio of 70–76%. [4] The spire is very low; the flanks are smooth; the apex is slightly pointed. [5] The suture is indistinct and rises toward a high labial insertion nearly level with the apex. [3] The shoulder and posterior notch are moderately developed. [3] The outer lip is straight, wide, and strongly inrolled, extending well below the level of the strong anterior notch. [3] Nine denticles occupy more than half the inner lip, strongest medially and very weak on the flare. [3] The columella bears three very strong plications and one lira (occasionally up to four), together filling more than half of the aperture. [3] An anterior callus is strong; a light callus wash extends to the posterior notch. [3] The parietal callus ridge is strong; the parietal wall is deeply recessed with excavated plications. [3] The aperture is straight and relatively narrow. [3]
The foot is semi-transparent, about half again as long as the shell and proportionally narrower, with irregular yellowish-white lateral marks and two longer posterior streaks, interspersed with dull orange spots and black marks; a distinct elongated black mark lies medially at the posterior end. [3] The bifid head lobes show greenish-yellow medial markings and semi-transparent tips; orange and black spots are present. [3] Tentacles are short, semi-transparent, and unmarked; eyes black. [3] The siphon is short and translucent yellowish-white. [3] The mantle roof has a predominantly greenish-brown ground color with orange spots and larger round yellowish-white marks, many edged in black; the same chromatism is visible beneath the teleoconch whorls. [3]
This species occurs in the Caribbean Sea off Venezuela.