Genus Parapoteriostomum Hartwich, 1986
Key to species
| 1 | a. Elements of ILC less than twice as long as elements of ELC; ILC inserted at similar level on BC wall laterally, dorsally and ventrally | P. mettami |
| b. Elements of ILC more than twice as long as elements of ELC; ILC inserted on BC wall significantly more deeply ventrally and dorsally than laterally | 2 | |
| 2 | a. BC walls thicker anteriorly, more that 4 times as long as greatest thickness | P. euproctus |
| b. BC walls of uniform thickness or thicker posteriorly, length less than 3 times greatest thickness | 3 | |
| 3 | a. BC walls of nearly uniform thickness; short dorsal gutter present; dorsal lobe of copulatory bursa more than twice as long as lateral bursal lobes | P. schuermanni |
| b. BC walls thickest posteriorly; dorsal gutter absent;; dorsal lobe of copulatory bursa less than twice length of lateral bursal lobes | P. mongolica |
© (contents) R.J.
Lichtenfels, V.A. Kharchenko,
G.M. Dvojnos 2003
Design and programming: Yuriy Kuzmin,
2003