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The World of Protozoa, Rotifera, Nematoda and Oligochaeta

Hyalodiscus

Hyalodiscus Hertwig & Lesser, 1874 (ref. ID; 36, 3687, 3693, 7275) reported year? (ref. ID; 1618)

Family Vampyrellidae (ref. ID; 36, 7275)

[ref. ID; 1618]
Discoid, though outline varies; endoplasm reddish, often vacuolated and sometimes shows filamentous projections reaching body surface; a single nucleus; ectoplasmic band of varying width surrounds the body completely; closely allied to Vampyrella; fresh water. (ref. ID; 1618)

[ref. ID; 1923]
Without shell and flagellum and pellicle. Disc-shaped amoebae with granular protoplasm and a margin of clear protoplasm; no or indeterminate pseudopods. Thin ectoplasmic layer with ridges radiating from the central mass. About 3 species, 2 marine and 1 fresh water. (ref. ID; 1923)

[ref. ID; 7275]
Feed exclusively on penetrated algae. Freshwater habitats. (ref. ID; 7275)
  1. Hyalodiscus angelovica Sawyer (ref. ID; 3847)
  2. Hyalodiscus caeruleus Schaeffer, 1926 (ref. ID; 3687)
  3. Hyalodiscus elegans Schaeffer, 1926 (ref. ID; 3687)
  4. Hyalodiscus foliaceus (Lepsi, 1931) (ref. ID; 3687)
  5. Hyalodiscus korotnewi (Mereschkovsky, 1879) (ref. ID; 3687), korotnevi? Mereschkovsky (ref. ID; 3693)
  6. Hyalodiscus macronucleus (Lepsi, 1931) (ref. ID; 3687)
  7. Hyalodiscus minimus (Lepsi) (ref. ID; 3687)
  8. Hyalodiscus pedatus (Klein) (ref. ID; 36)
  9. Hyalodiscus penardii Lepsi, 1960 (ref. ID; 3687 original paper)
  10. Hyalodiscus placopus (ref. ID; 7275)
  11. Hyalodiscus ruber (Schulze) Mereschkowsky, 1879 (ref. ID; 36) reported author and year? (ref. ID; 7275)
  12. Hyalodiscus rubicundus Hertwig & Lesser 1874 (ref. ID; 36, 3687) reported year? (ref. ID; 1618, 1923, 3693)
    Syn; Plakopus ruber F.-E. Schulze (ref. ID; 3693)
  13. Hyalodiscus simplex Wohlfarth-Bottermann (ref. ID; 1618)

Hyalodiscus angelovica Sawyer (ref. ID; 3847)

Descriptions

Marine amoebae. (ref. ID; 3847)

Hyalodiscus rubicundus Hertwig & Lesser, 1874 (ref. ID; 36, 3687) reported year? (ref. ID; 1618, 1923, 3693)

Synonym

Plakopus ruber F.-E. Schulze (ref. ID; 3693)

Descriptions

Polymorphic; when its progress during movement is interrupted by an object, the body doubles back upon itself, and moves on in some other direction; fresh water ponds among surface vegetation. (ref. ID; 1618)
Body discoidal. Endoplasm reddish-yellow in color, enclosing numerous vacuoles and one or more nuclei. Habitat ooze of ponds; scarce. (ref. ID; 1923)

Measurements

50-80 um by about 30 um. (ref. ID; 1618)
Size 40-60 um. (ref. ID; 1923)

Hyalodiscus simplex Wohlfarth-Bottermann (ref. ID; 1618)

Descriptions

Movement by broad hyaline pseudopod; in fresh water among algae. (ref. ID; 1618)

Measurements

50-70 um in diameter. (ref. ID; 1618)