Nebela pechorensis Kosakyan et Mitchell, 2012

 

Diagnosis: The test is colorless or slightly brownish, tear or drop shaped, with a protruding narrow neck, slightly compressed laterally, with small lateral pores (number of pores can vary). The test is composed of small particles likely obtained from preys (i.e. euglyphid testate amoebae), which are often covered with a thin layer of organic cement. The aperture is oval, linear.

Dimensions: length: 84-92 µm, breadth: 54-69 µm, width of aperture: 19-23 µm; neck 6.2 ± 0.9 µm high (n=10).

Ecology: peatlands, in Sphagnum.

Remarks: Nebela pechorensis by shape very much resembles N. guttata, from which it differs only by the linear aperture. Despite the similar morphology, these two species are clearly genetically different (sequence divergence up to 12%). See Kosakyan et al., 2012.

Recent posts

Difflugia key ovoid

Difflugia Group 1 Key characters: Test < 60 µm. Test in cross section rounded. Test with rounded fundus. Pseudostome with smooth circular edge. Test not

Read More »

Difflugia: ovoid tests

Difflugia – group 1 Test < 60 µm. Test in cross section rounded. Test with rounded fundus. Pseudostome with smooth circular edge. Test not spherical

Read More »

Difflugia ampla

Difflugia ampla, after Rampi, 1950 (l) and Gauthier-Lièvre et Thomas, 1958 (r) Difflugia ampla Rampi, 1950 Diagnosis: Test broadly pyriform, with a wide and rounded

Read More »

Difflugia parva

Difflugia parva, from Gauthier-Lièvre et Thomas, 1958 Difflugia parva  (Thomas, 1954) Ogden, 1983 = Difflugia oblonga var. parva Thomas, 1954 Diagnosis: Test pyriform, tapering evenly from

Read More »