Key to species of Austrophthiracarus reported from New Zealand

1 Sensilli long, setiform, without distinctly swollen head; posterior part of notogaster with peculiar structure of protuberance........................................................... A. daimonios Niedbała, 2000

- Sensilli short, club-like or fusiform; posterior part of notogaster without peculiar structure of protuberance..... 2

2 Notogaster with more than 20 pairs of setae; interlamellar setae long and thick.. A. neotrichus (Wallwork, 1966)

- Notogaster with fewer than 20 pairs of setae; interlamellar setae vestigial or short and thin.................. 3

3 Interlamellar setae vestigial................................................................... 4

- Interlamellar setae present.................................................................... 5

4 Exobothridial setae and setae v’’ on femora I present................................ A. cronadun sp. nov.

- Exobothridial setae and setae v’’ on femora I absent......................... A. pulchellus Niedbała, 1993

5 Notogaster with 15 pairs of setae; vestigial setae f 1 posterior to setae h 1 ................... A. tawhai sp. nov.

- Notogaster with 18 pairs of setae; vestigial setae f 1 dorsally of setae h 1 .............. A. aureus Niedbała, 2000