
Deharvengia papuensis Bonnet, 1979
Diagnosis. The shell is large, ovoid, and very regular in shape, with a colorless appearance. The elliptical pseudostome is bordered by a thick yellowish lip or rim and is surmounted by a small visor composed of several siliceous plates. The test is covered with large, regularly spaced elliptical plates, exhibiting clear lateral and longitudinal overlap. Typically, 7 transverse rows and 6 longitudinal rows are simultaneously visible.
The pseudostomal region is characterized by smaller and irregularly placed plates, which are integrated into the lip. The plates of the visor are slightly smaller than those of the body and are consolidated by several small siliceous discs.
Dimensions: Bonnet (1979): Shell length 102 µm; width 51 (n=18); large plates 22.5 × 13.1 µm; small discs 5—6 µm.
Habitat: Soil.
Geographical distribution: Papua New Guinea.