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world of amoeboid organisms

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Polytactic and orthotactic
Large polypodial amoebae with well pronounced pseudopodia; in fast locomotion monopodial form.

Palmate
Midsize polypodial amoebae with numerous pseudopodia which are formed rom the basal part of the body.

Dactylopodial
Usually small amoebae, wit characteristic finger-shaped hyaline subpseudopodia (dactylopodia).

Acanthopodial
Small amoebae with sharp, tapering, pointed, sometimes furcate, hyaline subpseudopodia.

Monotactic
Monopodial, elongate, amoebae, without any lateral or dorsal wrinkles and with steady cytoplasmic flow.

Rhizotactic
Amoebae in rapid locomotion monopodial, with distinct adhesive uroid and usually with large hyaline cap.

Flamellian
Amoebae elongate to semicircular, flattened, with frontal subpseudopodia, lobes and waves.

Lens shaped
Amoebae lens shaped, dorsal surface covered by a flexible tectum or cuticle.

Striate and rugose
Amoebae oblong or rounded with several parallel dorsal folds and/or with numerous irregular dorsal wrinkles.

Lanceolate or lingulate
Amoebae lancet or tongue like, with lateral flatness, without folds or wrinkles, except Paradermamoeba.

Fan shaped
Amoebae flattened, fan shaped, semicircular or spatulate amoebae, without subpseudopodia.

 

Mayorellian
Amoebae elongate or irregularly triangular, with blunt conical or mamilliform subpseudopodia.

Branched, but not reticulate, pseudopodia without granules
Amoebae flattened, branched without any reticulum. Pseudopodia without granules or only at the base.

Branched and reticulate, pseudopodia without granules
Amoebae flattened, branched with anastomosing pseudopodia. Pseudopodia without granules or only at the base.

Branched and reticulate, with granulopodia
Amoebae flattened, branched with anastomosing pseudopodia. Pseudopodia with bi-directional streaming.

Eruptive
Monopodial amoebae, eruptive in locomotion. Eruptions may be more or less pronounced, but are always visible (distinguish from Rhizamoeba, which also has eruptive traits).

Vampyrellids
Filose amoebae which feed on algae

Mastigamoeba
Amoebae with cilium, usually very long

Pelomyxa
Amoebae oblong or ovoid, sometimes with small cilia

Flabellate morphotype
Recent posts

Haplomyxa spec.

Main cell body Haplomyxa spec. Description: The cell had a cylindrical flattened body from which numerous granuloreticulopodia emerged. The common shape was more or less

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Valkanovia delicatula

V. delicatula, after Valkanov, 1962 Genus Valkanovia  Tappan, 1966 Diagnosis: Shell ovoid, oblate, elliptical in cross-section, composed of elongated elliptical hyaline scales arranged in a

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Gocevia pontica

Gocevia pontica, after Valkanov, 1934 Gocevia pontica Valkanov, 1934 Diagnosis: Clearly addressed bipolarity. Body covered by a weakly flexible tectum covered with foreign bodies. The

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Nabranella

N. brevis, after Snegovaya and Alekperov, 2009 Genus Nabranella Snegovaya and Alekperov, 2009 Diagnosis: Shell oval or spherical shape without neck. Apical top flat and

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Armipyxis

Genus Armipyxis Dekhtiar, 2009 Genus Armipyxis was created by Dekhtiar (2009) to accommodate all species with internal struts. However, C. aculeata may also have struts, although

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Netzelia pseudolimnetica

N. pseudolimnetica, after Penard, 1902 Netzelia pseudolimnetica Ogden and Meisterfeld, 1989 Synonym Difflugia limnetica (Levander, 1900) Penard, 1902. D. limnetica – Pejler, 1962, Oikos, 12,

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Cylindrifflugia hiraethogii

C. hiraethogii, after Ogden. 1983 Cylindrifflugia hiraethogii (Ogden, 1983) González-Miguéns et al., 2022 Diagnosis: the shell is light yellow or transparent, thin pyriform with a distinct

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Cylindrifflugia bacillariarum

  C. bacillariarum, 103 – 114 µm – Fochteloërveen, Netherlands   Cylindrifflugia bacillariarum (Perty, 1849) n. comb. González-Miguéns et al., 2022 Diagnosis: shell transparent, colorless or

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Cylindrifflugia elegans

C. elegans, length 84-102 µm, Gaasterland Cylindrifflugia elegans (Penard, 1890) n. comb. González-Miguéns et al., 2022 Basionym: Difflugia elegans Penard, 1890 Diagnosis: shell outline rough, pyriform

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Cylindrifflugia lanceolata

C. lanceolata, shells 153-169 µm long, nuclei 23-26 µm (Naardermeer, Netherlands) Cylindrifflugia lanceolata (Penard, 1890) n. comb. González-Miguéns et al., 2022 Basionym: Difflugia lanceolata Penard,

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