Gastrocopta ogasawarana Pilsbry

Ogasawara Whorl Snail (Gastrocopta ogasawarana)  

The Ogasawara Whorl Snail inhabited the islands of Chichijima and probably Ototojima in the Ogasawara Island group, Japan.  

The reasons for the extinction of this snail species are the same as for the closely related Chichijima Whorl Snail (Gastrocopta chichijimana Pilsbry).  

*********************

Depiction from: ‘George W. Tryon; Henry A. Pilsbry a.o.: Manual of Conchology. Second series: Pulmonata, Vol. 24, Pupillidae (Gastrocoptinae), 1916-1918’

(public domain)

*********************  

References:  

[1] Takashi Ohbayashi; Isamu Okochi; Hiroki Sato; Tsuyoshi Ono: Food habit of Platydemus manokwari De Beauchamp, 1962 (Tricladida: Terricola: Rhynchodemidae), known as a predatory flatworm of land snails in the Ogasawara (Bonin) Islands, Japan. Entomology and Zoology 40: 609-614. 2005  

*********************  

edited: 07.11.2020