“The ¼ whorl of tuba projecting upward and the oblique apex are the dominant characters for the new species. Opisthostoma beeartee n. sp. looks very close to Opisthostoma javanicum Benthem Jutting, 1932 which found in Borneo, but the new species is slightly different in size and shorter tuba, and the oblique apex characteristic.” (Panha, Tongkerd, & Sutcharit, 2004)
Panha, S., P. Tongkerd, & C. Sutcharit (2004) original descriptions on Opisthostoma beeartee – “Shell minute, white, cylindrical shaped slightly oblique with 0.9 mm height and the width from the outermost tuba to outermost penultimate whorl is 1.4 mm. Whorl is approximately 3 ¾ (included tuba). Sutures are well impressed. Constriction is distinct. Tuba is about ¼ whorl. Shell has distinct radial ribs. Aperture tilted up about 30 degree to the apex. Apex is slightly oblique to the shell axis. Peristome is thickened and reflected. Aperture is rounded with double peristome. The opening of aperture faces obliquely upward.”
Opisthostoma beeartee – “…0.9 mm height and the width from the outermost tuba to outermost penultimate whorl is 1.4 mm.” (Panha, Tongkerd, & Sutcharit, 2004)
Type locality – “Thailand, Tadan limestone hill near Pangnga Bay, Pangnga Province at 8° 23′ 52″ N 98° 30′ 51″ E” leg. S. Panha (Panha, Tongkerd, & Sutcharit, 2004)