world of amoeboid organisms

Menu
Euglypha penardi
Euglypha penardi (ID confirmed by Ralf Meisterfeld)

Euglypha penardi Meisterfeld, 1979

Diagnosis: Large shell, in cross-section broad oval, pseudostome also broad oval; spines of different length cover the whole surface of the rear part of the shell. Spines usually not paired but solitary and anchored with a thick drop of kit. The yellowish to yellowish-brow color is probably caused by the large amount of cement. REM photographs show the significant bulging of the cement between the oval plate scales. The 10-14 oval marginal aperture plates overlap each other for about one-third. At the front end of each scale are 9, rarely 7, points, and on the underside one oblique front-facing tooth. The size of the points as well as the number of teeth decreases to both sides of the plates. The plasma displays no special features. Euglypha penardi differs from E. ciliata by its larger dimensions and the higher number of point and teeth of the apertural plates. It differs from E. compressa in the spines which cover the whole rear of the shell, the larger number of teeth in the apertural scales, the color and the rounded lateral edges in contrast to the convex cross-section of E. compressa.

Dimensions: L 100-120 µm, B 7-88 µm (Meisterfeld)

Ecology: Sphagnum, USA (Penard as E. ciliata large variation), the Netherlands

Remarks: I made this photomicrographs in 2010 when I was testing a camera and made a quick preparation, without knowing which species is was.

Euglypha dickensii
Euglypha penardi
From Meisterfeld, 1979
Recent posts

Cyclopyxis kahli oblonga

C. kahli f. oblonga , after Tarnogradskii, 1959 Cyclopyxis kahli f. oblonga  (Tarnogradskii, 1959) Centropyxis kahli f. oblonga Tarnogradskii, 1959 Diagnosis:  Test with all the

Read More »

Cyclopyxis leclercqi

Cyclopyxis leclercqi – from Beyens and Chardez, 1986 Cyclopyxis leclercqi Beyens and Chardez, 1986 Diagnosis: Shell circular in apertural view, dorso-ventrally compressed with a swollen

Read More »

Haplomyxa saranae

Haplomyxa saranae Dellinger, 2014 Diagnosis: cell body from small rounded (0.1 mm) to large elongated shape (up to 3.5 x 0.3 mm), usually flat but

Read More »

Haplomyxa spec.

Main cell body Haplomyxa spec. Description: The cell has a central body from which numerous granuloreticulopodia emerge. The cell body can be small or large,

Read More »

Haplomyxa spec.

Haplomyxa spec. These video’s show an undescribed Haplomyxa species which was collected from a mesotrophic freshwater pond in the Netherlands, January 2020, and kept in Petri

Read More »

Chlamydophrys-schaudinn

Fritz Schaudinn (1871 – 1906) was a German zoologist. He was the co-discoverer of the causative agent of syphilis and did research on amoebas, particularly

Read More »