Key to adult female Odonaspis species currently recorded from Australia

1. Perivulvar pores in 3 groups, present anteriorly and laterally to vulva ....................................................................... 2

- Perivulvar pores in 2 groups, each group present laterally to vulva ..................................... O. bouldersensis, sp. nov.

2. Median and submedian parts of intersegmental line between abdominal segments V and VI made of variouslyshaped sclerotizations ..................................................................................................................... O. ruthae Kotinsky

- Median and submedian parts of intersegmental line between abdominal segments V and VI made of regularlyshaped sclerotization ..................................................................................................................................................... 3

3. Postvulvar sternite sclerotized with ducts present only along its intersegmental furrow; posterior spiracles without associated spiracular pores ........................................................................................................... O. secreta (Cockerell)

- Postvulvar sternite not sclerotized, with ducts present throughout sternite; posterior spiracles with associated spiracular pores....................................................................................................................................................................... 4

4. Gland tubercles present ventrally on submargin of head and prothoracic segment; each anterior spiracle with 15–38 quinquelocular pores ........................................................................................................ O . saccharicaulis (Zehntner)

- Gland tubercles absent ventrally on submargin of head and prothoracic segment; each anterior spiracle with 4–12 quinquelocular pores .............................................................................................................. O. australiensis Ben-Dov