Key to Vietnamese species of Galumna (Galumna)

1 Interlamellar setae very short or absent ....................................................................................................................... 2

- Interlamellar setae long ................................................................................................................................................ 5

2 Dorsosejugal suture interrupted medially ............................................................................................. G. aba Mahunka

- Dorsosejugal suture complete ...................................................................................................................................... 3

3 Areae porosae Aa wedge-shaped or boot-shaped .............................................................................. G. obvia (Berlese)

- Areae porosae Aa rounded or triangular ....................................................................................................................... 4

4 Sensillar head barbed ................................................................................................................. G. flabellifera Hammer

- Sensillar head smooth ................................................................................................................. G. levisensilla sp. nov.

5 Rostrum pointed ....................................................................................................................... G. acutirostrum sp. nov.

- Rostrum rounded.......................................................................................................................................................... 6

6 Areae porosae Aa triangular, oblong ....................................................................................... G. lanceata (Oudemans)

- Areae porosae Aa triangular, but not oblong ............................................................................................................... 7

7 One postanal area porosa ....................................................................................................................G. k h o i i Mahunka

- Two postanal areae porosae ................................................................................................................ G. triquetra Aoki