Difflugia gramen as illustrated in Shen & Zhang (1990) Biomonitoring Techniques Using Freshwater Microbiota, China Architecture and Building Press. This image was taken with permission from Modern Biomonitoring Techniques Using Freshwater Microbiota written by Shen Yunfen, Zhang Zongshe and colleagues, and published by China Architecture and Building Press in 1990. Image copyright: China Architecture and Building Press, used under license to MBL (micro*scope).
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From the collection
Protozoan biomonitors in China
|Description of Difflugia gramen: Testate amoebae, lorica is brown or purplish-grey, spherical or ovoid. The surface is rough and covered with sand-grains, but like D. corona the gaps between large particles are often filled with smaller fragments. The aperture is trilobed and is surrounded by a slightly raised collar of small particles cemented together. Length of shell 70-98 microns, breadth of shell 55-95 microns, diameter of aperture 28-36 microns. |