Microworld

world of amoeboid organisms

Menu
FOV 0.5 mm

Genus Dracomyxa Hülsmann, 2014

Diagnosis: Large plasmodia with hundreds or thousands of small nuclei involved in bidirectional streaming. Obligatory alternation of sessile and motile stages. Locomotion by migration via one or several giant pseudopodia with pre-dominantly unidirectional centrifugal streaming of protoplasm. Cyst formation. Tectum as (protective) covering. Occasional formation of protoplasmic propagules (blisters, blebs) from pseudopodia and central areas. Omnivorous or predatory. Occurring in freshwater habitats.
Cell body vermiform or reticulate, usually large (up to several centimetres in diameter), either covered by smooth inconspicuous tectum or completely naked during and after migration. If present, tectum opens with pseudostomes, usually located terminally. Bulky aggregates of defecation particles accumulate along basis of pseudopodia emerging from pseudostomes. No cleansing process before migration. Cysts in rows inside tectum, singular, pediculate. Predatory.
Type species: Dracomyxa pallida

Ecology: Fresh water

RETICULOMYXA FILOSA
Dracomyxa spec. cell body
Dracomyxa, detail of reticulum
Recent posts

Nebela golemanskyi

N. golemanskyi, after Todorov, 2010 Nebela golemanskyi Todorov, 2010 Diagnosis: Shell large, colourless and pyriform, with a distinct short neck about one fourth of the

Read More »

Nebela nebeloides

N. nebeloides, after Gauthier-Lièvre and Thomas, 1958 Nebela nebeloides (Gauthier-Lièvre and Thomas, 1958) Todorov et al., 2010 Basionym: Difflugia nebeloides Gauthier-Lièvre and Thomas, 1958 Diagnosis:

Read More »

Difflugia biwae

D. biwae, after Yang and Shen, 2005 Difflugia biwae Kawamura, 1918 Diagnosis: Shell in lateral view fusiform in outline with a straight neck, a conspicuous

Read More »

Difflugia mulanensis

D. mulanensis, after Yang et al., 2015 Difflugia mulanensis Yang, Meisterfeld, Zhang and Shen, 2015 Diagnosis: Shell elongate ovoid like a vase, with a distinct

Read More »

Euglypha bryophila

Euglypha bryophila, after Brown, 1911 (L), from Ecuador (R) Euglypha bryophila  Brown, 1911 Diagnosis: (Original description) The test is very regular in form and subject

Read More »

Vernalophrys

(A) A Scenedesmus cell (arrow) is engulfed by a trophozoite. (B) Several Scenedesmus cells adhere to the surface of a plasmodium that has numerous vacuoles

Read More »