Oligochaetocystinae

Oligochaetocystinae is a subfamily of parasites in the phylum Apicomplexa.

Taxonomy
There are four genera in this subfamily:
 * Acarogregarina
 * Echiurocystis
 * Neomonocystis
 * Oligochaetocystis

Description
The oocysts are cylindrical without thickening at ends.