According to Brzeski, 1991: [Geocenamus microdorus (Geraert, 1966)]
Body annuli rounded, striae not exceptionally deep. Lateral field
basically with six incisures, often additional faint lines may appear between
these, sometimes all lines look alike making the total number of incisures,
6, 8 or 10. Head usually narrower than adjacent body, sometime
continuous or separated by shallow depression. Cephalic framework
weakly refractive, extends posteriorly for two or three annuli. Female
genital branches often very long, the anterior may reach the middle of
procorpus and the posterior may enter the tail. However, length of
genital branches seems to depend on female age and possibly also environmental
conditions. Tail mostly bent ventrally, narrowing to a rounded terminus,
which is either smooth or variably striated. Unstriated tail terminus
predominates in the examined material.
(Description- Brzeski, 1991)
