but is diagnosed by its marginal hooks being longer than 19 μm,
a sickle longer than 4 μm,
a sickle aperture shorter than the sickle distal width,
and absence of a ventromedial indentation in the haptoral accessory hard part.
Scanning electron microscopy reveals a central foramen in the haptoral accessory hard part, and small knob-like protuberances on the heel and toe of the marginal hook sickle.