Testate Amoebae –
Amoebozoa (Part), Stramenopiles (Part), Rhizaria (Part)
Observations on Lesquereusia spiralis
Protisten / Home / Testata Amoeboid Organisms / Amoebozoa / Tubulinea / Elardia / Arcellinida / Glutinoconcha / Longithecina / Lesquereusiidae / Lesquereusia spiralis

Taxonomic tree according to Lahr et al., 2019 (https://doi.org/10.1016/j.cub.2019.01.078)
and González-Miguéns et al., 2022 (https://doi.org/10.1016/j.ympev.2022.107557)
Amorphea Adl et al., 2012
Amoebozoa Lühe, 1913, renewed definition Cavalier-Smith, 1998
● Tubulinea Smirnov et al., 2005
●● Elardia, Kang et al., 2017
●●● Order Arcellinida Kent, 1880
●●●● Suborder Glutinoconcha Lahr et al., 2019
●●●●● Infraorder Longithecina Lahr et al., 2019
●●●●●● Family Lesquereusiidae Jung, 1942
●●●●●●● Genus Lesquereusia Schlumberger, 1845
Lesquereusia spiralis (Ehrenberg, 1840) Tanárek, 1881
Most likely ID: n.a.
Basionym: Difflugia spiralis Ehrenberg, 1840
Add’l Synonyms: Lesquereusia jurassica Schlumberger, 1845
Sampling date 10/2008. Scale bars indicate 50 µm (1), 10 µm (2), 25 µm (3), 10 µm (4), 5 µm (5) .
Five images.
First: | Synoptic representation of the test (shell). It primarily consists of idiosomes (self made siliceous particles looking like sausages). A few xenosomes (incorporated grains of sand) are visible. All xenosomes are covered with a siliceous coating. |
Second and third: | A closer look on the idiosomes. We see many sieve-like regions which are identical to the proteinaceous matrix of the test, in which idiosomes an xenosome (quartz grains) are embedded. |
Fouth: | Region of the test´s neck with a large quartz grain, which is covered with silica produced by the amoeba. |
Fifth: | A look inside the test shows that idiosomes are produced in reserve and stored in the cytoplasm in order to be used during cell division to build the test of the daughter cell. |
Please click on < or > on the image edges or on the dots at the bottom edge of the images to browse through the slides!
Place name: Pond Suploch, Hiddensee (Germany)
Latitude: 54.538638 Longitude: 13.097802
Microscope Zeiss Universal, camera Olympus C7070WZ. DOF images.
Two images, taken with a dissecting microscope.
Please click on < or > on the image edges or on the dots at the bottom edge of the images to browse through the slides!
Place name: Bog Waasenmoos Pass Thurn near Mittersil (Tyrol, Austria)
Latitude: 47.30234117 Longitude: 12.41751194
Microscope Olympus SZX16, camera Olympus OM-D M5 MKII. DOF images.

Place name: Wetland near Schladming (Austria)
Latitude: 47.37386 Longitude: 13.823016
Microscope Zeiss Universal, camera Olympus C7070WZ. DOF images.
© Wolfgang Bettighofer,
images under Creative Commons License V 3.0 (CC BY-NC-SA).
For permission to use of (high resolution) images please contact postmaster@protisten.de.
New items
crassa
digitus
var. lamellosum
digitus
var. latum
oblongum
interruptum
spec.
spec.
kinahanii
spec.
polymorphum
var. polymorphum
spec.
spirostriolatum
digitus
brebissonii
rotata
swartzii
capitulum
antilopaeum
neosinuosum
brebissonii
pachydermum
thomasiana
var. notata
ansatum
forficulatum
var. verrucosum
neodepressum
armatum
oblongum
porteanum
truncata
rhomboidale
furcatum
uncinatum
dissiliens
pseudonitidulum
var. validum
truncata
var. bahusiensis
bidentatum
hirsutum
cucurbitinum
minor
pyramidatum
truncata
var. quadrata
binale
var. gutwinskii
inconspicuum
borreri
americana
quadratulum
trabecula
var. elongatum
coeseli
margaritacaeum
bicuneatum
apiculata
simplicius
crenulatum
crassum
simonyi
var. sparsiaculeatum
caelatum
crux-melitensis
sparsepunctatum
ehrenbergii
didelta
spongiosum
var. perbifidum
connatum
denticulata
subarctoum
trabecula
var. trabecula
humerosum
teliferum
dejectus
spec.
conspersum
komarekii
papillifera
arboricola
venustum
var. excavatum
viridis
pulchellum
tripus
granulatus
var. granulatus
subspicatus
humerosum
var. affine
nostochinearum
convergens
arcuata
integrum
aureus
rotata
lunaris
grevillei
lunatus
alternans
irregularis
laevis
var. laevis
ehrenbergianum
luetkemuelleri
var. carniolicum
reticulatum
tetras
limneticum
viridis
cystozygote
tetrachotoma
simplex
var. sturmii
biradiatum
microporum
var. octaedricum
braunii
reinhardtii
pusillum
lacustris
speculum
diaphanum
New items
crassa
digitus
var. lamellosum
digitus
var. latum
oblongum
interruptum
spec.
spec.
kinahanii
spec.
polymorphum
var. polymorphum
spec.
spirostriolatum
digitus
brebissonii
rotata
swartzii
capitulum
antilopaeum
neosinuosum
brebissonii
pachydermum
thomasiana
var. notata
ansatum
forficulatum
var. verrucosum
neodepressum
armatum
oblongum
porteanum
truncata
rhomboidale
furcatum
uncinatum
dissiliens
pseudonitidulum
var. validum
truncata
var. bahusiensis
bidentatum
hirsutum
cucurbitinum
minor
pyramidatum
truncata
var. quadrata
binale
var. gutwinskii
inconspicuum
borreri
americana
quadratulum
trabecula
var. elongatum
coeseli
margaritacaeum
bicuneatum
apiculata
simplicius
crenulatum
crassum
simonyi
var. sparsiaculeatum
caelatum
crux-melitensis
sparsepunctatum
ehrenbergii
didelta
spongiosum
var. perbifidum
connatum
denticulata
subarctoum
trabecula
var. trabecula
humerosum
teliferum
dejectus
spec.
conspersum
komarekii
papillifera
arboricola
venustum
var. excavatum
viridis
pulchellum
tripus
granulatus
var. granulatus
subspicatus
humerosum
var. affine
nostochinearum
convergens
arcuata
integrum
aureus
rotata
lunaris
grevillei
lunatus
alternans
irregularis
laevis
var. laevis
ehrenbergianum
luetkemuelleri
var. carniolicum
reticulatum
tetras
limneticum
viridis
cystozygote
tetrachotoma
simplex
var. sturmii
biradiatum
microporum
var. octaedricum
braunii
reinhardtii
pusillum
lacustris
speculum
diaphanum