Description of Difflugia lucida
(
anglais
)
fourni par BioPedia
Testate amoeba, shell is transparent, ovoid, gracefully curved aborally but tapering more gradually towards the aperture to give a well defined outline, and laterally compressed. It is thin, smooth and composed mainly of flattish pieces of quartz with an occasional siliceous shell plate or diatom frustule added, these particles are usually arranged so that they meet but do not overlap. Small areas of organic cement, in the form of a network, are seen as part of the shell matrix. The network is often an arrangement of rings whose internal diameter is about 380-480 nm with walls 95-125 nm thick. The aperture is elliptical and surrounded by irregularly arranged particles which give a rough outline to the immediate apertural region. Body length 67-91 microns, breadth 40-55 microns, depth 23-37 microns, diameter of aperture 23-29 microns, depth of aperture 13-19 microns.