Brachystomia bipyramidata Nomura, 1936
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https://dx.doi.org/10.3897/BDJ.11.e105444 |
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https://treatment.plazi.org/id/164791E4-10F8-54E5-A440-7A3D6ABA09CB |
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Brachystomia bipyramidata Nomura, 1936 |
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Brachystomia bipyramidata Nomura, 1936 View in CoL
Native status
Sucking body fluid of Crassostrea gigas on rocks in intertidal zones.
Distribution
North of China, Japan.
Notes
The genus Brachystomia Monterosato, 1884 is very similar to Odostomia spp. in shell characters, but differs in the protoconch turning down on the teleoconch apex, attaching to other molluscs when alive ( Okutani 2017).
Diagnosis
Shell minute (3.2 ± 0.27 mm in height, 1.5 ± 0.34 mm in width), oval conical, moderately thick, translucently milky-white, solid (Fig. 15 View Figure 15 ). Whorls about 5, each spiral slightly convex, the height of the body whorl is larger than spire. Surface covered with yellowish-brown periostracum. Suture distinct, grooved. Growth lines coarse and flexuous. Aperture ovate. Columella with a weak fold. Outer lip margin with a shallow posterior sinus.
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