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Alabasta militaris
SEM image of A. militaris – courtesy of © eye of science (www.eyeofscience.com)

Genus Alabasta Duckert, Blandenier, Kosakyan and Singer, 2018

Diagnosis: The test rigid, colourless or yellowish, elongated in broad view with a maximal width at about the two thirds from the aperture and the sides then tapering towards the aperture. Test proteinaceous often with incorporated silica scales taken from euglyphid preys. The pseudostome strongly convex with a flare (fan shaped) in broad view and a deep notch in profile. Lateral pores usually present at about one third of the distance from the pseudostome to the fundus.

Type species: Alabasta militaris (Penard 1890) Duckert, Blandenier, Kosakyan and Singer, 2018

Included taxa:
Nebela militaris Penard 1890;
N. kivuense Gauthier-Lièvre and Thomas 1961;
N. longicollis Penard 1890.

1
Smaller species < 100 μm, test narrow piriform in broad view
A. longicollis
1′
Larger species: L = 120 – 140 μm, test elongated piriform in broad view, with an elongated neck
2

 

2
Wider species in broad view (L/B = 1.8 – 2), pseudostome wide (15 – 22 μm)
A. militaris
2’
Slender species, often laterally curved, in broad view (L/B = 2.4 – 2.7) pseudostome narrow (12 – 16 μm)
A. kivuense
Alabasta militaris
A. militaris
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