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The World of Protozoa, Rotifera, Nematoda and Oligochaeta

Pseudodifflugia

Pseudodifflugia Schlumberger, 1842 (ref. ID; ?) or 1845 (ref. ID; 3519, 3686, 5772)

Amoebae: Filosea Leidy, 1879 [ICZN] (ref. ID; 5772)

[ref. ID; 1618]
Test ovoid, usually rigid, with foreign bodies; circular or elliptical in cross-section; aperture terminal; granulated cytoplasm colorless or greyish; nucleus posterior; a contractile vacuole; filopodia long, straight or branching; fresh water. (ref. ID; 1618)

[ref. ID; 1923]
Shell covered with sand grains and dirt particles. (ref. ID; 1923)

[ref. ID; 3686]
Shell ovoid or globular, rigid, composed of proteinaceous material with agglutinated particles; aperture terminal, usually large and circular. (ref. ID; 3686)

[ref. ID; 5772]
Testate amoebae with rigid test composed of proteinaceous material with agglutinated particles. The test has a single, terminal aperture (Bovee 1985; Ogden & Hedley 1980). (ref. ID; 5772)
  1. Pseudodifflugia amphora Leidy
    See; Pseudodifflugia archeri (ref. ID; 3693)
  2. Pseudodifflugia andreevi Golemansky, 1976 (ref. ID; 2097, 2114 original paper, 2116, 2416, 3519)
  3. Pseudodifflugia archeri (Penard) Penard, 1902 (ref. ID; 3693 redescribed paper)
    Syn; Pseudodifflugia amphora Leidy (ref. ID; 3693)
  4. Pseudodifflugia compressa Penard (ref. ID; 2240) or (F.-E. Schulze) Penard, 1902 (ref. ID; 3693 redescribed paper)
    Syn; Pleurophrys compressa F.-E. Schulze (ref. ID; 3693)
  5. Pseudodifflugia delamarei Couteaux & Golemansky, 1982 (ref. ID; 2097) or 1984 (ref. ID; 2416 original paper, 2438)
  6. Pseudodifflugia fascicularis Penard, 1902 (ref. ID; 3693 original paper, 4755)
  7. Pseudodifflugia fulva (Archer, 1870) (ref. ID; 3686) or (Arch.) Penard (ref. ID; 3501, 3693)
    Syn; Pleurophrys fulva Archer (ref. ID; 3693)
  8. Pseudodifflugia gracilis Schlumberger, 1845 (ref. ID; 1618, 1923, 2057, 2564, 3686, 4664) reported year? (ref. ID; 3501, 3693)
    Syn; Pleurophrys amphitrematoides Archer (ref. ID; 3693); Pleurophrys angulata Mereschkovsky (ref. ID; 3693); Pleurophrys sphaerica Claparede & Lachmann (ref. ID; 3693)
  9. Pseudodifflugia gracilis var. terricola Bonnet & Thomas, 1960 (ref. ID; 661, 2057, 2466 original paper, 2555)
  10. Pseudodifflugia hemisphaerica Penard
    See; Phryganella hemisphaerica (ref. ID; 3693)
  11. Pseudodifflugia horrida Penard, 1902 (ref. ID; 3693 original paper)
  12. Pseudodifflugia moderi Couteaux (ref. ID; 2486 original paper)
  13. Pseudodifflugia senartensis Couteaux (ref. ID; 2486 original paper)

Pseudodifflugia fascicularis Penard, 1902 (ref. ID; 3693 original paper, 4755)

Descriptions

Shell pear-shaped, with an inner layer of flattened xenosomes, which are covered with more or less rough particles. Aperture circular, with an accumulation of mainly inorganic material, which is lost when the cell dies. These particles probably serve the small purpose as those of D. lucida. Nucleus with a small central nucleolus. (ref. ID; 4755)

Measurements

The measurements of the length of different authors are in the range of 15-71 um (Penard 1902; De Saedeleer 1934; Bartos 1954). The corresponding character of our population shows relatively little variability between 29-38 um. (ref. ID; 4755)

Pseudodifflugia fulva (Archer, 1870) (ref. ID; 3686) or (Archer) Penard (ref. ID; 3501, 3693)

Synonym

Pleurophrys fulva Archer (ref. ID; 3693)

Descriptions

The shell is yellow or light brown, small, ovoid, but circular in transverse section. The irregular outline is produced by the covering of extraneous particles. The aperture is roughly circular and appears to have a thin border of organic cement. (ref. ID; 3686)

Measurements

Length of shell 36; breadth of shell 30; diameter of aperture 12 um (n=1). (ref. ID; 3686)

Pseudodifflugia gracilis Schlumberger, 1845 (ref. ID; 1618, 1923, 2057, 2564, 3686, 4664) reported year? (ref. ID; 3501, 3693)

Synonym

Pleurophrys amphitrematoides Archer (ref. ID; 3693); Pleurophrys angulata Mereschkovsky (ref. ID; 3693); Pleurophrys sphaerica Claparede & Lachmann (ref. ID; 3693)

Descriptions

Test yellowish or brownish; subspherical, with sand-grains; aperture without neck. (ref. ID; 1618)
Shell ovoid, not compressed, light brown or yellowish in color, covered with fine quartz sand grains. Aperture circular, devoid of neck. Pseudopodia numerous, long, delicate, straight or forked. Habitat ooze of ponds, lakes, aquatic vegetation. (ref. ID; 1923)
The shell is yellow or brown, circular in broad view and hemispherical in lateral view. It is composed mainly of small sand and grains. The aperture is circular and bordered by an arrangement of small particles embedded in an organic matrix. Variation in shape, size of aperture and composition of the shell were described by Penard (1902). (ref. ID; 3686)

Measurements

Length 20-65 um. (ref. ID; 1618, 1923)
Length of shell 57-72; breadth of shell 37-45; diameter of aperture 33-42 um (n=2). (ref. ID; 3686)