Key to species of Daochia from China
1. Aedeagus with long preatrium and pair of elongate process arising from its base (Figs. 12,13; Wei et al., 2006: Figs 30, 31).. ................................................................................................... 2
- Aedeagus not as above (Wei et al, 2006: Figs 25, 26, 36, 37)................................................... 3
2. Aedeagus shaft with pair of papilla-like processes apically on ventral surface (Figs. 12, 13)........... D. fenstrata sp. nov.
- Aedeagus shaft with one pair of short and one pair of long lateral appendages basally (Wei et al., 2006: Figs 30,31)............................................................................................. D. longshengensis
3. Aedeagus with anterior processes short and posterior processes long (Wei et al., 2006: Figs 25, 26............ D.reticulata
- Aedeagus broadly U-shaped with single pair of sub-basal processes (Wei et al., 2006: Figs 36,37).............. D.bicornis