Tiny Organisms in Aquatic Habitats

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Testate Amoebae –
Amoebozoa (Part), Stramenopiles (Part), Rhizaria (Part)

Illustrated Key for

Testate Amoebae – Amoebozoa (Part), Stramenopiles (Part), Rhizaria (Part)

Amoebozoa – Tubulinea/Corycidia

Amphizonella violacea — Amphizonella
violacea

Amphizonella violacea — Amphizonella
violacea

Amoebozoa – Tubulinea/Elardia/Arcellinida/Glutinoconcha

Cylindrothecina/Cylindrifflugiidae

Amoebozoa – Tubulinea/Elardia/Arcellinida /Glutinoconcha

Cylindrothecina /Cylindrifflugiidae

Cylindrifflugia acuminata — Cylindrifflugia
acuminata

Cylindrifflugia elegans — Cylindrifflugia
elegans

Cylindrifflugia lanceolata — Cylindrifflugia
lanceolata

Cylindrifflugia periurbana — Cylindrifflugia
periurbana

Cylindrifflugia acuminata — Cylindrifflugia
acuminata

Cylindrifflugia elegans — Cylindrifflugia
elegans

Cylindrifflugia lanceolata — Cylindrifflugia
lanceolata

Cylindrifflugia periurbana — Cylindrifflugia
periurbana

Amoebozoa – Tubulinea/Elardia/Arcellinida/Glutinoconcha

Excentrostoma/Centropyxidae

Amoebozoa – Tubulinea/Elardia/Arcellinida /Glutinoconcha

Excentrostoma /Centropyxidae

Centropyxis aculeata — Centropyxis
aculeata

Centropyxis discoides — Centropyxis
discoides

Centropyxis discoides — Centropyxis
discoides

Centropyxis lapponica — Centropyxis
lapponica

Centropyxis lapponica — Centropyxis
lapponica

Centropyxis oblonga — Centropyxis
oblonga

Centropyxis spinosa — Centropyxis
spinosa

Centropyxis spinosa — Centropyxis
spinosa

Centropyxis spinosa — Centropyxis
spinosa

Centropyxis aculeata — Centropyxis
aculeata

Centropyxis discoides — Centropyxis
discoides

Centropyxis discoides — Centropyxis
discoides

Centropyxis lapponica — Centropyxis
lapponica

Centropyxis lapponica — Centropyxis
lapponica

Centropyxis oblonga — Centropyxis
oblonga

Centropyxis spinosa — Centropyxis
spinosa

Centropyxis spinosa — Centropyxis
spinosa

Centropyxis spinosa — Centropyxis
spinosa

Amoebozoa – Tubulinea/Elardia/Arcellinida/Glutinoconcha

Hyalospheniformes/Hyalospheniidae

Amoebozoa – Tubulinea/Elardia/Arcellinida /Glutinoconcha

Hyalospheniformes /Hyalospheniidae

Gibbocarina gracilis — Gibbocarina
gracilis

Gibbocarina gracilis — Gibbocarina
gracilis

Gibbocarina gracilis — Gibbocarina
gracilis

Hyalosphenia elegans — Hyalosphenia
elegans

Hyalosphenia papilio — Hyalosphenia
papilio

Longinebela penardiana — Longinebela
penardiana

Longinebela penardiana — Longinebela
penardiana

Longinebela tubulosa — Longinebela
tubulosa

Nebela collaris — Nebela
collaris

Nebela tincta — Nebela
tincta

Planocarina marginata — Planocarina
marginata

Planocarina marginata — Planocarina
marginata

Quadrulella symmetrica — Quadrulella
symmetrica

Gibbocarina gracilis — Gibbocarina
gracilis

Gibbocarina gracilis — Gibbocarina
gracilis

Gibbocarina gracilis — Gibbocarina
gracilis

Hyalosphenia elegans — Hyalosphenia
elegans

Hyalosphenia papilio — Hyalosphenia
papilio

Longinebela penardiana — Longinebela
penardiana

Longinebela penardiana — Longinebela
penardiana

Longinebela tubulosa — Longinebela
tubulosa

Nebela collaris — Nebela
collaris

Nebela tincta — Nebela
tincta

Planocarina marginata — Planocarina
marginata

Planocarina marginata — Planocarina
marginata

Quadrulella symmetrica — Quadrulella
symmetrica

Amoebozoa – Tubulinea/Elardia/Arcellinida/Glutinoconcha

Longithecina/Difflugiidae and Lesquereusiidae

Amoebozoa – Tubulinea/Elardia/Arcellinida /Glutinoconcha

Longithecina/Difflugiidae and Lesquereusiidae

Difflugia paulii — Difflugia
paulii

Difflugia pyriformis — Difflugia
pyriformis

Difflugia pyriformis — Difflugia
pyriformis

Difflugia rubescens — Difflugia
rubescens

Difflugia rubescens — Difflugia
rubescens

Difflugia serrata — Difflugia
serrata

Difflugia urceolata — Difflugia
urceolata

Difflugia urceolata — Difflugia
urceolata

Difflugia ventricosa — Difflugia
ventricosa

Difflugia venusta — Difflugia
venusta

Lesquereusia epistomium — Lesquereusia
epistomium

Lesquereusia modesta — Lesquereusia
modesta

Lesquereusia spiralis — Lesquereusia
spiralis

Zivkovicia compressa — Zivkovicia
compressa

Zivkovicia spectabilis — Zivkovicia
spectabilis

Difflugia paulii — Difflugia
paulii

Difflugia pyriformis — Difflugia
pyriformis

Difflugia pyriformis — Difflugia
pyriformis

Difflugia rubescens — Difflugia
rubescens

Difflugia rubescens — Difflugia
rubescens

Difflugia serrata — Difflugia
serrata

Difflugia urceolata — Difflugia
urceolata

Difflugia urceolata — Difflugia
urceolata

Difflugia ventricosa — Difflugia
ventricosa

Difflugia venusta — Difflugia
venusta

Zivkovicia compressa — Zivkovicia
compressa

Zivkovicia spectabilis — Zivkovicia
spectabilis

Amoebozoa – Tubulinea/Elardia/Arcellinida/Glutinoconcha

Sphaerothecina/Arcellidae and Netzeliidae

Amoebozoa – Tubulinea/Elardia/Arcellinida /Glutinoconcha

Sphaerothecina/Arcellidae and Netzeliidae

Arcella gibbosa — Arcella
gibbosa

Arcella gibbosa — Arcella
gibbosa

Arcella hemisphaerica — Arcella
hemisphaerica

Galeripora arenaria — Galeripora
arenaria

Galeripora discoides — Galeripora
discoides

Netzelia corona — Netzelia
corona

Netzelia tuberculata — Netzelia
tuberculata

Netzelia tuberculata — Netzelia
tuberculata

Netzelia wailesi — Netzelia
wailesi

Arcella gibbosa — Arcella
gibbosa

Arcella gibbosa — Arcella
gibbosa

Arcella hemisphaerica — Arcella
hemisphaerica

Galeripora arenaria — Galeripora
arenaria

Galeripora discoides — Galeripora
discoides

Netzelia corona — Netzelia
corona

Netzelia tuberculata — Netzelia
tuberculata

Netzelia tuberculata — Netzelia
tuberculata

Netzelia wailesi — Netzelia
wailesi

Amoebozoa – Tubulinea/Elardia/Arcellinida/Glutinoconcha

Volnustoma/Heleoperidae

Amoebozoa – Tubulinea/Elardia/Arcellinida /Glutinoconcha

Volnustoma/Heleoperidae

Heleopera petricola var. amethystea — Heleopera
petricola
var. amethystea

Heleopera petricola var. amethystea — Heleopera
petricola
var. amethystea

Amoebozoa – Tubulinea/Elardia/Arcellinida/Organoconcha

Microchlamyidae

Amoebozoa – Tubulinea/Elardia/Arcellinida /Organoconcha

Microchlamyidae

Microchlamys patella — Microchlamys
patella

Microchlamys patella — Microchlamys
patella

Pyxidicula spec. — Pyxidicula
spec.

Pyxidicula spec. — Pyxidicula
spec.

Pyxidicula cymbalum — Pyxidicula
cymbalum

Pyxidicula operculata — Pyxidicula
operculata

Pyxidicula operculata — Pyxidicula
operculata

Microchlamys patella — Microchlamys
patella

Microchlamys patella — Microchlamys
patella

Pyxidicula spec. — Pyxidicula
spec.

Pyxidicula spec. — Pyxidicula
spec.

Pyxidicula cymbalum — Pyxidicula
cymbalum

Pyxidicula operculata — Pyxidicula
operculata

Pyxidicula operculata — Pyxidicula
operculata

Amoebozoa – Tubulinea/Elardia/Incertae sedis Arcellinida

Paraquadrula irregularis — Paraquadrula
irregularis

Paraquadrula irregularis — Paraquadrula
irregularis

Pontigulasia rhumbleri — Pontigulasia
rhumbleri

Paraquadrula irregularis — Paraquadrula
irregularis

Paraquadrula irregularis — Paraquadrula
irregularis

Pontigulasia rhumbleri — Pontigulasia
rhumbleri

SAR-Stramenopiles – Bigyra/Labyrinthulomycetes

Amphitremida

SAR-Stramenopiles – Bigyra /Labyrinthulomycetes

Amphitremida

Diplophrys archeri — Diplophrys
archeri

Diplophrys archeri — Diplophrys
archeri

SAR-Rhizaria – Cercozoa

Imbricatea/Silicofilosea/Euglyphida and Incertae sedis Imbricatea

SAR-Rhizaria – Cercozoa

Imbricatea/Silicofilosea /Euglyphida and Incertae sedis Imbricatea

Assulina seminulum — Assulina
seminulum

Campascus triqueter — Campascus
triqueter

Corythion dubium — Corythion
dubium

Corythion dubium — Corythion
dubium

Cyphoderia amphoralis — Cyphoderia
amphoralis

Cyphoderia ampulla — Cyphoderia
ampulla

Cyphoderia ampulla — Cyphoderia
ampulla

Cyphoderia ampulla (Ichthyosquama loricaria)

Euglypha acanthophora — Euglypha
acanthophora

Euglypha ciliata — Euglypha
ciliata

Euglypha cristata — Euglypha
cristata

Euglypha tuberculata — Euglypha
tuberculata

Paulinella chromatophora — Paulinella
chromatophora

Paulinella chromatophora — Paulinella
chromatophora

Sphenoderia fissirostris — Sphenoderia
fissirostris

Sphenoderia lenta — Sphenoderia
lenta

Tracheleuglypha dentata — Tracheleuglypha
dentata

Tracheleuglypha dentata — Tracheleuglypha
dentata

Trinema enchelys — Trinema
enchelys

Assulina seminulum — Assulina
seminulum

Campascus triqueter — Campascus
triqueter

Corythion dubium — Corythion
dubium

Corythion dubium — Corythion
dubium

Cyphoderia amphoralis — Cyphoderia
amphoralis

Cyphoderia ampulla — Cyphoderia
ampulla

Cyphoderia ampulla — Cyphoderia
ampulla

Cyphoderia ampulla (Ichthyosquama loricaria)

Euglypha acanthophora — Euglypha
acanthophora

Euglypha ciliata — Euglypha
ciliata

Euglypha cristata — Euglypha
cristata

Euglypha tuberculata — Euglypha
tuberculata

Paulinella chromatophora — Paulinella
chromatophora

Paulinella chromatophora — Paulinella
chromatophora

Sphenoderia fissirostris — Sphenoderia
fissirostris

Sphenoderia lenta — Sphenoderia
lenta

Tracheleuglypha dentata — Tracheleuglypha
dentata

Tracheleuglypha dentata — Tracheleuglypha
dentata

Trinema enchelys — Trinema
enchelys

SAR-Rhizaria – Cercozoa

Imbricatea/Thecofilosea/Tectofilosida and Ventricleftida

SAR-Rhizaria – Cercozoa

Imbricatea/Thecofilosea /Tectofilosida and Ventricleftida

Diaphoropodon mobile — Diaphoropodon
mobile

Lecythium spec. — Lecythium
spec.

Rhizaspis simplex — Rhizaspis
simplex

Ventricleftida spec. — Ventricleftida
spec.

Ventricleftida spec. — Ventricleftida
spec.

Ventricleftida spec. — Ventricleftida
spec.

Diaphoropodon mobile — Diaphoropodon
mobile

Lecythium spec. — Lecythium
spec.

Rhizaspis simplex — Rhizaspis
simplex

Ventricleftida spec. — Ventricleftida
spec.

Ventricleftida spec. — Ventricleftida
spec.

Ventricleftida spec. — Ventricleftida
spec.

SAR-Rhizaria – Retaria

Foraminifera

SAR-Rhizaria – Retaria

Foraminifera

Edaphoallogromia australica — Edaphoallogromia
australica

Edaphoallogromia australica — Edaphoallogromia
australica

Foraminifera species — Foraminifera
species

Edaphoallogromia australica — Edaphoallogromia
australica

Edaphoallogromia australica — Edaphoallogromia
australica

Foraminifera species — Foraminifera
species

© Wolfgang Bettighofer 2023–2024

New items

Glaucocystis nostochinearum — Glaucocystis
nostochinearum

Pseudopediastrum subgranulatum — Pseudopediastrum
subgranulatum

Pandorina spec. — Pandorina
spec.

Lemmermannia komarekii — Lemmermannia
komarekii

Trebouxia arboricola — Trebouxia
arboricola

Eremosphaera viridis — Eremosphaera
viridis

Crucigenia fenestrata — Crucigenia
fenestrata

Goniochloris tripus — Goniochloris
tripus

Desmodesmus subspicatus — Desmodesmus
subspicatus

Microthamnion strictissimum — Microthamnion
strictissimum

Raphidocelis arcuata — Raphidocelis
arcuata

Goniochloris sculpta — Goniochloris
sculpta

Volvox aureus — Volvox
aureus

Crucigeniella lunaris — Crucigeniella
lunaris

Dimorphococcus lunatus — Dimorphococcus
lunatus

Nephrochlamys rostrata — Nephrochlamys
rostrata

Selenastrum bibraianum — Selenastrum
bibraianum

Microspora irregularis — Microspora
irregularis

Dictyosphaerium ehrenbergianum — Dictyosphaerium
ehrenbergianum

Hydrodictyon reticulatum — Hydrodictyon
reticulatum

Oocystis marssonii — Oocystis
marssonii

Stauridium tetras — Stauridium
tetras

Pseudostaurastrum enorme — Pseudostaurastrum
enorme

Oedogonium spec. — Oedogonium
spec.

Kirchneriella obesa — Kirchneriella
obesa

Oocystis parva — Oocystis
parva

Tetradesmus dimorphus — Tetradesmus
dimorphus

Pseudostaurastrum limneticum — Pseudostaurastrum
limneticum

Ankistrodesmus falcatus — Ankistrodesmus
falcatus

Eremosphaera viridis cystozygote — Eremosphaera
viridis
cystozygote

Lacunastrum gracillimum — Lacunastrum
gracillimum

Rayssiella hemisphaerica — Rayssiella
hemisphaerica

Tetradesmus lagerheimii — Tetradesmus
lagerheimii

Bumilleria sicula — Bumilleria
sicula

Botryosphaerella sudetica — Botryosphaerella
sudetica

Glochiococcus aciculiferus — Glochiococcus
aciculiferus

Monactinus simplex — Monactinus
simplex

Tetrastrum elegans — Tetrastrum
elegans

Chlorophyta cyst — Chlorophyta
cyst

Tetraedron caudatum — Tetraedron
caudatum

Chaetophoropsis pisiformis — Chaetophoropsis
pisiformis

Characium angustum — Characium
angustum

Hindakia tetrachotoma — Hindakia
tetrachotoma

Monactinus simplex var. sturmii — Monactinus
simplex
var. sturmii

Asterococcus superbus — Asterococcus
superbus

Treubaria triappendiculata — Treubaria
triappendiculata

Coleochaete spec. — Coleochaete
spec.

Chlorotetraedron incus — Chlorotetraedron
incus

Parapediastrum biradiatum — Parapediastrum
biradiatum

Cladophora spec. zoospores — Cladophora
spec.
zoospores

Chlamydomonas mutabilis — Chlamydomonas
mutabilis

Chlorella spec. — Chlorella
spec.

Coelastrum microporum var. octaedricum — Coelastrum
microporum
var. octaedricum

Lemmermannia tetrapedia — Lemmermannia
tetrapedia

Pediastrum braunii — Pediastrum
braunii

Ulothrix speciosa — Ulothrix
speciosa

Chlamydomonas reinhardtii — Chlamydomonas
reinhardtii

Chlorella vulgaris — Chlorella
vulgaris

Desmodesmus communis — Desmodesmus
communis

Micractinium pusillum — Micractinium
pusillum

Pseudopediastrum boryanum var. longicorne — Pseudopediastrum
boryanum
var. longicorne

Klebsormidium dissectum — Klebsormidium
dissectum

Haematococcus lacustris — Haematococcus
lacustris

Coccomyxa confluens — Coccomyxa
confluens

Desmodesmus opoliensis var. carinatus — Desmodesmus
opoliensis
var. carinatus

Micractinium quadrisetum — Micractinium
quadrisetum

Porphyridium purpureum — Porphyridium
purpureum

Chrysopyxis paludosa — Chrysopyxis
paludosa

Octactis speculum — Octactis
speculum

Ceramium diaphanum — Ceramium
diaphanum

Virescentia helminthosa — Virescentia
helminthosa

New items

Glaucocystis nostochinearum — Glaucocystis
nostochinearum

Pseudopediastrum subgranulatum — Pseudopediastrum
subgranulatum

Pandorina spec. — Pandorina
spec.

Lemmermannia komarekii — Lemmermannia
komarekii

Trebouxia arboricola — Trebouxia
arboricola

Eremosphaera viridis — Eremosphaera
viridis

Crucigenia fenestrata — Crucigenia
fenestrata

Goniochloris tripus — Goniochloris
tripus

Desmodesmus subspicatus — Desmodesmus
subspicatus

Microthamnion strictissimum — Microthamnion
strictissimum

Raphidocelis arcuata — Raphidocelis
arcuata

Goniochloris sculpta — Goniochloris
sculpta

Volvox aureus — Volvox
aureus

Crucigeniella lunaris — Crucigeniella
lunaris

Dimorphococcus lunatus — Dimorphococcus
lunatus

Nephrochlamys rostrata — Nephrochlamys
rostrata

Selenastrum bibraianum — Selenastrum
bibraianum

Microspora irregularis — Microspora
irregularis

Dictyosphaerium ehrenbergianum — Dictyosphaerium
ehrenbergianum

Hydrodictyon reticulatum — Hydrodictyon
reticulatum

Oocystis marssonii — Oocystis
marssonii

Stauridium tetras — Stauridium
tetras

Pseudostaurastrum enorme — Pseudostaurastrum
enorme

Oedogonium spec. — Oedogonium
spec.

Kirchneriella obesa — Kirchneriella
obesa

Oocystis parva — Oocystis
parva

Tetradesmus dimorphus — Tetradesmus
dimorphus

Pseudostaurastrum limneticum — Pseudostaurastrum
limneticum

Ankistrodesmus falcatus — Ankistrodesmus
falcatus

Eremosphaera viridis cystozygote — Eremosphaera
viridis
cystozygote

Lacunastrum gracillimum — Lacunastrum
gracillimum

Rayssiella hemisphaerica — Rayssiella
hemisphaerica

Tetradesmus lagerheimii — Tetradesmus
lagerheimii

Bumilleria sicula — Bumilleria
sicula

Botryosphaerella sudetica — Botryosphaerella
sudetica

Glochiococcus aciculiferus — Glochiococcus
aciculiferus

Monactinus simplex — Monactinus
simplex

Tetrastrum elegans — Tetrastrum
elegans

Chlorophyta cyst — Chlorophyta
cyst

Tetraedron caudatum — Tetraedron
caudatum

Chaetophoropsis pisiformis — Chaetophoropsis
pisiformis

Characium angustum — Characium
angustum

Hindakia tetrachotoma — Hindakia
tetrachotoma

Monactinus simplex var. sturmii — Monactinus
simplex
var. sturmii

Asterococcus superbus — Asterococcus
superbus

Treubaria triappendiculata — Treubaria
triappendiculata

Coleochaete spec. — Coleochaete
spec.

Chlorotetraedron incus — Chlorotetraedron
incus

Parapediastrum biradiatum — Parapediastrum
biradiatum

Cladophora spec. zoospores — Cladophora
spec.
zoospores

Chlamydomonas mutabilis — Chlamydomonas
mutabilis

Chlorella spec. — Chlorella
spec.

Coelastrum microporum var. octaedricum — Coelastrum
microporum
var. octaedricum

Lemmermannia tetrapedia — Lemmermannia
tetrapedia

Pediastrum braunii — Pediastrum
braunii

Ulothrix speciosa — Ulothrix
speciosa

Chlamydomonas reinhardtii — Chlamydomonas
reinhardtii

Chlorella vulgaris — Chlorella
vulgaris

Desmodesmus communis — Desmodesmus
communis

Micractinium pusillum — Micractinium
pusillum

Pseudopediastrum boryanum var. longicorne — Pseudopediastrum
boryanum
var. longicorne

Klebsormidium dissectum — Klebsormidium
dissectum

Haematococcus lacustris — Haematococcus
lacustris

Coccomyxa confluens — Coccomyxa
confluens

Desmodesmus opoliensis var. carinatus — Desmodesmus
opoliensis
var. carinatus

Micractinium quadrisetum — Micractinium
quadrisetum

Porphyridium purpureum — Porphyridium
purpureum

Chrysopyxis paludosa — Chrysopyxis
paludosa

Octactis speculum — Octactis
speculum

Ceramium diaphanum — Ceramium
diaphanum

Virescentia helminthosa — Virescentia
helminthosa