Leptomyxa neglecta  (Smirnov, Nassonova, Fahrni and Pawlowski, 2009) Smirnov et al., 2016

 

Diagnose: Cell often clavate; adhesive uroidal filaments or villous bulbous uroid; frontal hyaline cap occupies up to 1/3 of the total length of locomotive cell; uninucleate or multinucleate cells; nucleus oblong and flattened, vesicular or with several fragments of the nucleolar material; nucleolus contains a system of fine channels, visible in EM.

 

Dimensions: Length in locomotion 70–140 µm; breadth 10–36 µm. Nucleus 6–10 µm in length.

 

Ecoloy: Freshwater. Type location: The Lake Leshevoe, Valamo Island (The Lake Ladoga, North-Western Russia).

 

Remarks: Resembles L. australiensis but differs from this species in size and organization of the locomotive form, size and the organization of the nucleus and in the ultrastructure of the nucleolus.

 

Literature: Smirnov, A., Nassonova, E., Fahrni, J. and Pawlowski, J.: Rhizamoeba neglecta n. sp. (Amoebozoa, Tubulinea) from the bottom sediments of freshwater Lake Leshevoe (Valamo Island, North-Western Russia), with notes on the phylogeny of the order Leptomyxida - European Journal of Protistology 45 (2009) 251–259.

 

Rhizamoeba neglecta

Rhizamoeba neglecta; A Floating form; B-D Nuclei - All after Smirnov et al, 2009