Hoplonympha is a hypermastigid with a cigar-shaped and slender cell body (60-120 µm) tapering posteriorly. The flagella arise from two subapical triangular bundles each bearing about 30 flagella and moving independently. On top there is a bare cap. Two parabasal plaques / fibres underlies the flagellar areas and join the nucleus. Conspicuous surface linear ridges formed by attached long rod-shaped bacteria. Hoplonympha natator, from Hodotermopsis sjoestedti.
