1. Hysterosoma cauda structure present in males (Figure 2, Figure 3B, Figure 4, Figure 5A,B, Figure 9, Figure 10, Figure 11, Figure 14, Figure 15, Figure 16C and Figure 17)
Cunaxicaudinae Chen & Jin subfam. nov.
-Hysterosoma cauda structure absent in males	2
2. Palp telofemoral multi-branched seta present (except Parabonzia)
Bonziinae Den Heyer, 1978
-Palp telofemoral multi-branched seta absent	3
3. Palp three-segmented	Cunaxoidinae Den Heyer, 1978
-Palp four- or five-segmented	4
4. Palp four-segmented	Scirulinae Den Heyer, 1980
-Palp five-segmented	5
5. Palp extended beyond the subcapitulum by at least the distal half of the genua
	Cunaxinae Den Heyer, 1978
-Palp not extended beyond the subcapitulum by more than the distal half of the genua	6
6. T on tibiae IV present; cheliceral seta usually present; seta hg1 not geniculate
Coleoscirinae Den Heyer, 1978
-T on tibiae IV absent; cheliceral seta absent; seta hg1 geniculate
Orangescirulinae Bu & Li, 1987