Identification key to five species of genus Linhystera

1. Gubernacular apophysis present.......................................................................... 2

- Gubernacular apophysis absent........................................................................... 3

2. Amphidial fovea close to anterior end (<1.5 head diameter)....................................... L. breviapophysis

- Amphidial fovea far from anterior end (>1.5 head diameter)...................................... L. longiapophysis

3. de Man ratio c’ value <12.................................................................. L. problematica

- de Man ratio c’ value>12............................................................................... 4

4. Spicules long (>30 μm)........................................................................... L. longa

- Spicules short (<30 μm)................................................................. L. filiformis sp. nov.