Key to species of Lamtoana (males)

1 Pygofer with ventral appendage sinuate in lateral view, apex curved ventrad....................................... 2

- Pygofer with ventral appendage straight or curved slightly dorsad in lateral view (Figs 18d, 19b, 20b).................. 4

2 Aedeagus with distal processes more than half as long as shaft.............................. L. sordida Dworakowska

- Aedeagus with distal processes less than half as long as shaft................................................... 3

3 Basal triangles of mesonotum black............................................... L. hoslundiae Einyu & Ahmed

- Basal triangles of mesonotum pale............................................................. L. okiai Ahmed

4 Aedeagus without distal processes......................................................... L. magnifica Ahmed

- Aedeagus with pair of distal processes (Figs 18l, 19j, 20j)..................................................... 5

5 Pygofer with ventral appendage very short, not surpassing apex of lobe (Fig. 20b)....... L. exigua Cao & Dmitriev sp. nov.

- Pygofer with ventral appendage extended well beyond apex of lobe (Figs 18d, 19b)................................. 6

6 Pygofer ventral appendage broadened and obliquely truncate apically in lateral view (Figs 19b, d)..... L. nakulabica Ahmed

- Pygofer ventral appendage tapered apically in lateral view (Figs 18d, f).......................... L. flavoscuta (Naudé)