| Family | Allocrangonyctidae
Holsinger, 1989
| 3
85 | Genera
Species |
| Family | Austroniphargidae
Iannilli, Krapp & Ruffo, 2011
| 3
5 | Genera
Species |
| Family | Chillagoeidae
Lowry & Myers, 2012
| 3
3 | Genera
Species |
| Family | Crymostygiidae
Kristjánsson & Svavarsson, 2004
| 1
1 | Genus
Species |
| Family | Dussartiellidae
Lowry & Myers, 2012
| 2
3 | Genera
Species |
| Family | Giniphargidae
Lowry & Myers, 2012
| 1
1 | Genus
Species |
| Family | Kergueleniolidae
Lowry & Myers, 2013
| 1
1 | Genus
Species |
| Family | Kotumsaridae
Messouli, Holsinger & Reddy, 2007
| 1
1 | Genus
Species |
| Family | Neoniphargidae
Bousfield, 1977
| 9
32 | Genera
Species |
| Family | Niphargidae
Bousfield, 1977
| 15
724 | Genera
Species |
| Family | Paracrangonyctidae
Bousfield, 1983
| 1
2 | Genus
Species |
| Family | Paramelitidae
Bousfield, 1977
| 17
90 | Genera
Species |
| Family | Perthiidae
Williams & J.L. Barnard, 1988
| 1
2 | Genus
Species |
| Family | Pseudocrangonyctidae
Holsinger, 1989
| 4
49 | Genera
Species |
| Family | Pseudoniphargidae
Karaman, 1993
| 0
0 | Genera
Species |
| Family | Sandroidae
Lowry & Myers, 2012
| 0
0 | Genera
Species |
| Family | Sternophysingidae
Holsinger, 1992
| 1
10 | Genus
Species |
| Family | Uronyctidae
Lowry & Myers, 2012
| 1
1 | Genus
Species |
