Penard Labs

The Fascinating World of Amoebae
Thecofilosea Cavalier-Smith 2003, emend. Cavalier-Smith 2011
Ancestrally with robust organic extracellular theca; theca with perforations for cilia and for pseudopodia; ventral filopodia emerge from ventral groove.

1. Tectosia Cavalier-Smith 2012
Heterotrophic non-flagellates with single large nucleus and filopodia emerging from one or more apertures in a theca or central capsule; extrusomes absent.

1.1. Tectofilosida Cavalier-Smith 2012

1.1.1. Chlamydophryidae de Saedeleer 1934, emend. Meisterfeld 2002 (incertae sedis)
With a more or less flexible test that may be distorted by the contraction of the cell or by foreign material; some with attached foreign particles, scales, spines or spicules; division often longitudinal or by budding. Uni- or multinucleate; some species can fuse to form larger, multinucleate cells.

1.1.1.1. Lecythium Hertwig & Lesser 1874
Test thin, flexible and homogenous; colorless and translucent; aperture terminal, elastic; large posterior nucleus. Plasma fills the test completely. Numerous filopodia, branching, delicate and not anastomosing.
Stacks Image 8077
Stacks Image 8031
Stacks Image 7212
Lecythium hyalinum (Ehrenberg 1838) Hertwig and Lesser 1874
The arrow points to the aperture.

Stacks Image 7821
Lecythium hyalinum cluster

Stacks Image 107718
Lecythium spinosum (Penard 1890) Hopkinson 1915

Stacks Image 8123
Stacks Image 107698
Stacks Image 107708
Lecythium mutabilis Bailey, 1853

1.1.2. Diaphoropodon Archer 1869 (incertae sedis)
Test ovoid, clear, flexible with attached particles. With numerous spines (bristles). Numerous filopodia, branching, delicate and sometimes anastomosing.
Stacks Image 9805
Stacks Image 9903
Stacks Image 9977
Diaphoropodon mobile Archer 1869

Stacks Image 80718
Stacks Image 107659
Stacks Image 107629
Stacks Image 107599
Stacks Image 107539
Stacks Image 107689
Stacks Image 107509
Stacks Image 80688
Stacks Image 80754
Diaphoropodon archeri De Saedeleer 1934