Shells of South
East Queensland

Tweed Heads to Noosa
Triphoridae

Obesula albovittata

(Hedley, 1903)
Shell very small, sinistral. Protoconch planktotrophic, of 4_-5_ whorls, with a spiral thread and dense axial riblets.. Teleoconch whorls with 4 beaded spiral cords and axial costae; spirals 1 and 3 start immediately after protoconch, spiral 2 on about 3rd teleoconch whorl. By penultimate whorl, spirals 1 slightly stronger than spirals 2 and 3. Spiral 4 slightly exposed on all whorls. Another 2 spirals on base (numbered 5 and 6); spiral 5 weakly nodulose, spiral 6 smooth. Axial costae number 16-20 on penultimate whorl. Outer lip of aperture flared, anterior siphonal canal short, posterior canal a simple triangular notch. Colour of protoconch brown; teleoconch whorls with spiral 1 white with brown line around bottom edge, remainder of whorl fawn; base brown. Size: Adult shells 2.5 - 5.2 mm in length.

https://seashellsofnsw.org.au/Triphoridae/Pages/Obesula_albovittata.htm


Specimens

Obesula albovittata
Obesula albovittata
Obesula albovittata
Shelly Beach,  Australia
Size: 4mm    Collected: 2018
In sand and shell grit on beach. Dead collected.