Microworld

world of amoeboid organisms

Menu
Menu
Plagiopyxis declivis
Plagiopyxis declivis
Plagiopyxis declivis

Plagiopyxis declivis Bonnet, 1955

Diagnosis: Shell hemispheric, ventral side covered with flat xenosomes, smooth, dorsal side covered with rough xenosomes. Dorsal lip of the shell with a sharp, irregular margin, overhanging; ventral lip projects inside the shell as an elongation of the ventral side, therefore difficult to recognize. Nucleus with several nucleoli.

Dimensions; Diameter 63-79 µm.

Habitat: Soil or xerophile mosses.

Remarks: Scanning electron photomicrographs show that platelets of other testate amoebae (Trinema spp., Corythion spp., Euglypha spp.) are incorporated in the dorsal lip and the ventral side.

Plagiopyxis declivis

After Bonnet, 1955
Plagiopyxis declivis
Plagiopyxis declivis
Plagiopyxis declivis
  • Last updated January 31, 2021
Menu
Recent posts

Rhizaspis armata

September 21, 2021

R. armata, 68 µm long, excl. spines – Laegieskamp Rhizaspis armata (Lauterborn, 1901) Dumack et al., 2021 Basionym: Pamphagus armatum Lauterborn, 1890 Diagnosis: Theca membranous,

Read More »

Rhizaspis spinosa

September 21, 2021

The original description with original drawings, Penard, 1890. Rhizaspis spinosa (Penard, 1890) Dumack et al., 2021 Basionym: Trinema spinosum Penard, 1890 Diagnosis: Theca membranous, ovoid

Read More »

Difflugia “pseudoclaviformis”

September 21, 2021

Difflugia “pseudoclaviformis”, front and side view, 424 µm Difflugia “pseudoclaviformis” Diagnosis: Shell pyriform, compressed, with a more or less pronounced aboral protuberance; shell composed of

Read More »

Difflugia from Lolo Pass

September 20, 2021

Shells 461-448 µm, stacked image. I found this large en remarkable shells in sediment of a small mountain lake near Lolo Pass, Montana USA. It differs

Read More »

Foraminifer drome

September 14, 2021

Unknown species, collected from the river Drôme, France, 2021 Unknown species September 2021, I found about ten specimens of an agglutinated foraminifer in a sample

Read More »

Cyclopyxis spec

August 6, 2021

Cyclopyxis spec., 168 µm Cyclopyxis spec. Diagnosis: Shell circular in ventral and dorsal view, more or less hemispherical in lateral view (height/diameter ≈ 0.5); lateral

Read More »

Difflugia fallax

August 4, 2021

Difflugia fallax, from Penard, 1902 Difflugia fallax Penard, 1890 Diagnosis: Shell hyaline or yellowish-greenish, black at low magnification, round in cross section, formed of a

Read More »

Zivkovicia compressoidea

July 24, 2021

Z. compressoidea, a-b after Chardez, 1958; c after Jung, 1942 Zivkovicia compressoidea  (Jung, 1942) new.comb. Basionym: Pontigulasia compressoidea Jung, 1942 Diagnosis: Shell ovoid and compressed,

Read More »

Zivkovicia flexa

July 24, 2021

Z. flexa, from Cash and Hopkinson, 1909 Zivkovicia flexa  (Cash and Hopkinson, 1909) Ogden, 1983 Basionym: Pontigulasia compressa var. flexa  Cash and Hopkinson, 1909 Diagnosis:

Read More »