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

Alabasta longicollis

Alabasta longicollis, after Penard, 1890 Alabasta longicollis  (Penard, 1890) Diagnosis: Test pyriform, very elongated (3 times as long as wide), transparent, very little compressed, embedded

Read More »

Alabasta kivuense

Alabasta kivuense, after Gauthier-Lièvre and Thomas, 1961 Alabasta kivuense  Gauthier-Lièvre and Thomas, 1961 Diagnosis: In frontal view, the test is finger-shaped with subparallel sides, the

Read More »

Paulinella micropora

Paulinella micropora, – from Lhee et al., 2017 Paulinella micropora Lhee, Yang, Kim, Andersen & Yoon, 2017 Diagnosis: Test elongate, with five columns of scales,

Read More »

Quadrulella tubulata

Quadrulella tubulata, after Gauthier-Lièvre, 1953 Quadrulella tubulata  Gauthier-Lièvre, 1953 Diagnosis: Shell almost lageniform, compressed, with rounded fundus and more or less irregularly arranged, commonly small,

Read More »

Quadrulella elongata

Quadrulella elongata, after Van Oye, 1952 Quadrulella elongata  Van Oye, 1952 Diagnosis: Test elongated with long neck and square plates, without any pores. Pseudosome slightly

Read More »

Quadrulella scutellata

Quadrulella scutellata, after Wailes, 1912 Quadrulella scutellata  Wailes, 1912 Diagnosis: Test moderately large, hyaline, pyriform, compressed; composed of small siliceous, rectangular plates arranged in irregular

Read More »